Methyl Alcohol

Formula: CH₄O
Molecular weight: 32.0419
IUPAC Standard InChI: InChI=1S/CH4O/c1-2/h2H,1H3
IUPAC Standard InChIKey: OKKJLVBELUTLKV-UHFFFAOYSA-N
CAS Registry Number: 67-56-1
Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript.
Isotopologues:
Other names: Methanol; Carbinol; Methyl hydroxide; Methylol; Monohydroxymethane; Wood alcohol; CH3OH; Colonial spirit; Columbian spirit; Hydroxymethane; Wood naphtha; Alcool methylique; Alcool metilico; Columbian spirits; Metanolo; Methylalkohol; Metylowy alkohol; Pyroxylic spirit; Wood spirit; Rcra waste number U154; UN 1230; Pyro alcohol; Spirit of wood; Bieleski's solution; NSC 85232
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Information on this page:
Other data available:
- Reaction thermochemistry data: reactions 51 to 100, reactions 101 to 150, reactions 151 to 200, reactions 201 to 250, reactions 251 to 300
- Gas phase ion energetics data
- Ion clustering data
- Gas Chromatography
- Fluid Properties
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Gas phase thermochemistry data

Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, IR Spectrum, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, References, Notes

Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Quantity	Value	Units	Method	Reference	Comment
Δ_fH°_gas	-205. ± 10.	kJ/mol	AVG	N/A	Average of 9 values; Individual data points
Quantity	Value	Units	Method	Reference	Comment
Δ_cH°_gas	-763.68 ± 0.20	kJ/mol	Cm	Rossini, 1932	Flame Calorimetry; Corresponding Δ_fHº_gas = -201.49 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS

Constant pressure heat capacity of gas

C_p,gas (J/mol*K)	Temperature (K)	Reference	Comment
34.00	50.	Thermodynamics Research Center, 1997	p=1 bar. Recommended entropies and heat capacities are in good agreement with other statistically calculated values [ Ivash E.V., 1955, Zhuravlev E.Z., 1959, Chen S.S., 1977, Chao J., 1986, Gurvich, Veyts, et al., 1989]. Please also see Chao J., 1986, 2.; GT
36.95	100.
38.64	150.
39.71	200.
42.59	273.15
44.06 ± 0.03	298.15
44.17	300.
51.63	400.
59.70	500.
67.19	600.
73.86	700.
79.76	800.
84.95	900.
89.54	1000.
93.57	1100.
97.12	1200.
100.24	1300.
102.98	1400.
105.40	1500.
110.2	1750.
113.8	2000.
116.5	2250.
118.6	2500.
120.	2750.
121.	3000.

Constant pressure heat capacity of gas

C_p,gas (J/mol*K)	Temperature (K)	Reference	Comment
42.4 ± 1.3	279.	Stromsoe E., 1970	Heat capacity at 279 K was obtained by thermal conductivity [ Halford J.O., 1957]. Vapor heat capacities from calorimetric measurements [ De Vries T., 1941] were converted to the ideal gas heat capacities by corrections for the gas imperfection effects [ Chen S.S., 1977, Chao J., 1986, 2]. Ideal gas heat capacities are given by [ Stromsoe E., 1970] as a linear function Cp=f1(a+bT). This expression approximates the experimental values with the average deviation of 1.17 J/molK. The accuracy of the experimental heat capacities [ Stromsoe E., 1970] is estimated as less than 0.3%. Please also see De Vries T., 1941, Weltner W., 1951, Halford J.O., 1957.; GT
48.0 ± 1.3	345.6
46.8 ± 1.2	347.35
46.1 ± 1.3	349.65
47.6 ± 1.2	356.55
46.7 ± 1.3	358.15
48.2 ± 1.3	358.85
48.8 ± 1.3	359.85
50.3 ± 1.3	368.15
49.0 ± 1.2	373.35
51.3 ± 1.3	382.15
51.1 ± 1.2	398.95
52.3 ± 1.3	401.15
51.3 ± 1.2	401.35
52.01 ± 0.42	403.2
53.2 ± 1.3	420.15
53.9 ± 1.2	431.45
54.8 ± 1.2	442.15
55.9 ± 1.3	442.65
56.0 ± 1.2	457.35
57.20 ± 0.42	464.0
57.8 ± 1.2	477.75
58.4 ± 1.2	485.05
59.5 ± 1.2	498.95
60.4 ± 1.3	521.2
61.4 ± 1.2	521.35
64.3 ± 1.2	555.95
66.4 ± 1.2	581.35
66.8 ± 1.2	585.35

Condensed phase thermochemistry data

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Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity	Value	Units	Method	Reference	Comment
Δ_fH°_liquid	-238.4	kJ/mol	Ccr	Baroody and Carpenter, 1972	ALS
Δ_fH°_liquid	-239.5 ± 0.2	kJ/mol	Ccb	Chao and Rossini, 1965	see Rossini, 1934; ALS
Δ_fH°_liquid	-238.9 ± 3.6	kJ/mol	Ccb	Green, 1960	Reanalyzed by Cox and Pilcher, 1970, Original value = -238.5 ± 0.2 kJ/mol; ALS
Δ_fH°_liquid	-250.6	kJ/mol	Ccb	Parks, 1925	ALS
Δ_fH°_liquid	-251.3 ± 5.0	kJ/mol	Ccb	Richards and Davis, 1920	DRB
Quantity	Value	Units	Method	Reference	Comment
Δ_cH°_liquid	-725.7 ± 0.1	kJ/mol	Ccb	Chao and Rossini, 1965	see Rossini, 1934; Corresponding Δ_fHº_liquid = -239.5 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Δ_cH°_liquid	-726.5 ± 0.2	kJ/mol	Ccb	Green, 1960	Corresponding Δ_fHº_liquid = -238.7 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Δ_cH°_liquid	-726.34 ± 0.20	kJ/mol	Ccb	Rossini, 1931	Corresponding Δ_fHº_liquid = -238.83 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Δ_cH°_liquid	-715.05	kJ/mol	Ccb	Parks, 1925	Corresponding Δ_fHº_liquid = -250.1 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Δ_cH°_liquid	-713.83	kJ/mol	Ccb	Richards and Davis, 1920	At 291 K; Corresponding Δ_fHº_liquid = -251.34 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity	Value	Units	Method	Reference	Comment
S°_liquid	127.19	J/mol*K	N/A	Carlson and Westrum, 1971	DH
S°_liquid	126.8	J/mol*K	N/A	Kelley, 1929	DH
S°_liquid	129.7	J/mol*K	N/A	Parks, Kelley, et al., 1929	Extrapolation below 90 K, 34.3 J/mol*K. Revision of previous data.; DH
S°_liquid	136.4	J/mol*K	N/A	Parks, 1925	Extrapolation below 90 K, 40.75 J/mol*K.; DH
Quantity	Value	Units	Method	Reference	Comment
S°_{solid,1 bar}	1.117	J/mol*K	N/A	Ahlberg, Blanchard, et al., 1937	DH

Constant pressure heat capacity of liquid

C_p,liquid (J/mol*K)	Temperature (K)	Reference	Comment
79.5	298.15	Filatov and Afanas'ev, 1992	DH
81.11	298.15	Khasanshin and Zykova, 1989	T = 175 to 338 K. Unsmoothed experimental datum.; DH
80.24	298.15	Andreoli-Ball, Patterson, et al., 1988	DH
80.35	298.15	Okano, Ogawa, et al., 1988	DH
81.0	298.15	Lankford and Criss, 1987	DH
81.32	298.	Korolev, Kukharenko, et al., 1986	DH
80.28	298.15	Ogawa and Murakami, 1986	DH
81.56	298.15	Tanaka, Toyama, et al., 1986	DH
80.22	298.15	Costas and Patterson, 1985	T = 298.15, 313.15 K.; DH
81.47	298.15	Zegers and Somsen, 1984	DH
78.90	288.15	Benson and D'Arcy, 1982	DH
81.92	298.15	Villamanan, Casanova, et al., 1982	DH
80.8	293.15	Atalla, El-Sharkawy, et al., 1981	DH
81.13	298.15	Carlson and Westrum, 1971	T = 5 to 332 K.; DH
83.7	298.	Deshpande and Bhatagadde, 1971	T = 298 to 318 K.; DH
85.8	313.2	Paz Andrade, Paz, et al., 1970	DH
85.8	298.2	Katayama, 1962	T = 10 to 60°C.; DH
80.8	311.	Swietoslawski and Zielenkiewicz, 1960	Mean value 21 to 56°C.; DH
86.2	323.	Hough, Mason, et al., 1950	T = 323 to 353 K.; DH
75.77	270.	Staveley and Gupta, 1949	T = 90 to 270 K.; DH
86.6	300.8	Phillip, 1939	DH
83.56	313.15	Fiock, Ginnings, et al., 1931	T = 40 to 110°C.; DH
79.9	292.0	Kelley, 1929	T = 16 to 293 K. Value is unsmoothed experimental datum.; DH
78.2	270.	Mitsukuri and Hara, 1929	T = 190 to 270 K.; DH
79.9	290.1	Parks, 1925	T = 89 to 290 K. Value is unsmoothed experimental datum.; DH
83.3	298.	von Reis, 1881	T = 288 to 335 K.; DH

Constant pressure heat capacity of solid

C_p,solid (J/mol*K)	Temperature (K)	Reference	Comment
68.39	120.	Sugisaki, Suga, et al., 1968	glass phase; T = 20 to 120 K.; DH
5.40	20.5	Ahlberg, Blanchard, et al., 1937	T = 5 to 28 K.; DH
105.	173.	Maass and Walbauer, 1925	T = 93 to 173 K.; DH

Phase change data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Henry's Law data, IR Spectrum, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, References, Notes

Data compiled as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
DH - Eugene S. Domalski and Elizabeth D. Hearing
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
CAL - James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri -- St. Louis

Quantity	Value	Units	Method	Reference	Comment
T_boil	337.8 ± 0.3	K	AVG	N/A	Average of 154 out of 171 values; Individual data points
Quantity	Value	Units	Method	Reference	Comment
T_fus	176. ± 1.	K	AVG	N/A	Average of 13 values; Individual data points
Quantity	Value	Units	Method	Reference	Comment
T_triple	175.5 ± 0.5	K	AVG	N/A	Average of 8 values; Individual data points
Quantity	Value	Units	Method	Reference	Comment
T_c	513. ± 1.	K	AVG	N/A	Average of 27 out of 31 values; Individual data points
Quantity	Value	Units	Method	Reference	Comment
P_c	81. ± 1.	bar	AVG	N/A	Average of 17 out of 20 values; Individual data points
Quantity	Value	Units	Method	Reference	Comment
V_c	0.117	l/mol	N/A	Gude and Teja, 1995
V_c	0.113024	l/mol	N/A	Craven and de Reuck, 1986	TRC
V_c	0.118	l/mol	N/A	Francesconi, Lentz, et al., 1981	Uncertainty assigned by TRC = 0.004 l/mol; TRC
V_c	0.11663	l/mol	N/A	Zubarev and Bagdonas, 1969	Uncertainty assigned by TRC = 0.0035 l/mol; TRC
Quantity	Value	Units	Method	Reference	Comment
ρ_c	8.51 ± 0.07	mol/l	AVG	N/A	Average of 7 values; Individual data points
Quantity	Value	Units	Method	Reference	Comment
Δ_vapH°	37.6 ± 0.5	kJ/mol	AVG	N/A	Average of 11 out of 12 values; Individual data points

Enthalpy of vaporization

Δ_vapH (kJ/mol)	Temperature (K)	Method	Reference	Comment
35.21	337.7	N/A	Majer and Svoboda, 1985
39.2	258.	A	Stephenson and Malanowski, 1987	Based on data from 175. to 273. K.; AC
36.9	353.	A	Stephenson and Malanowski, 1987	Based on data from 338. to 487. K.; AC
43.7	213.	A	Stephenson and Malanowski, 1987	Based on data from 188. to 228. K.; AC
38.9	275.	A	Stephenson and Malanowski, 1987	Based on data from 224. to 290. K.; AC
38.3	300.	A	Stephenson and Malanowski, 1987	Based on data from 285. to 345. K.; AC
37.0	350.	A	Stephenson and Malanowski, 1987	Based on data from 335. to 376. K.; AC
36.1	388.	A	Stephenson and Malanowski, 1987	Based on data from 373. to 458. K.; AC
35.1	468.	A	Stephenson and Malanowski, 1987	Based on data from 453. to 513. K.; AC
32.7	373.	C	Yerlett and Wormald, 1986	AC
28.1	423.	C	Yerlett and Wormald, 1986	AC
20.6	473.	C	Yerlett and Wormald, 1986	AC
7.4	510.	C	Yerlett and Wormald, 1986	AC
37.5	331.	EB	Cervenkova and Boublik, 1984	Based on data from 316. to 336. K.; AC
38.3	303.	N/A	Gibbard and Creek, 1974	Based on data from 288. to 337. K. See also Boublik, Fried, et al., 1984.; AC
35.2 ± 0.1	338.	C	Counsell and Lee, 1973	AC
35.6 ± 0.1	331.	C	Counsell and Lee, 1973	AC
36.2 ± 0.1	321.	C	Counsell and Lee, 1973	AC
37.0 ± 0.1	306.	C	Counsell and Lee, 1973	AC
36.7 ± 0.1	313.	C	Svoboda, Veselý, et al., 1973	AC
36.2 ± 0.1	323.	C	Svoboda, Veselý, et al., 1973	AC
35.6 ± 0.1	333.	C	Svoboda, Veselý, et al., 1973	AC
35.3 ± 0.1	338.	C	Svoboda, Veselý, et al., 1973	AC
34.7 ± 0.1	343.	C	Svoboda, Veselý, et al., 1973	AC
37.0	352.	N/A	Wilhoit and Zwolinski, 1973	Based on data from 337. to 383. K.; AC
38.7	290.	EB	Boublík and Aim, 1972	Based on data from 275. to 336. K. See also Stephenson and Malanowski, 1987.; AC
38.3	303.	EB	Ambrose and Sprake, 1970	Based on data from 288. to 357. K.; AC
36.3	368.	N/A	Hirata, Suda, et al., 1967	Based on data from 353. to 483. K.; AC
38.4	293.	N/A	Klyueva, Mischenko, et al., 1960	Based on data from 278. to 323. K.; AC

Enthalpy of vaporization

Δ_vapH = A exp(-αT_r) (1 − T_r)^β
Δ_vapH = Enthalpy of vaporization (at saturation pressure) (kJ/mol)
T_r = reduced temperature (T / T_c)

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Temperature (K)	298. to 477.
A (kJ/mol)	45.3
α	-0.31
β	0.4241
T_c (K)	512.6
Reference	Majer and Svoboda, 1985

Antoine Equation Parameters

log₁₀(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)

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Temperature (K)	A	B	C	Reference	Comment
353.5 to 512.63	5.15853	1569.613	-34.846	Ambrose, Sprake, et al., 1975	Coefficents calculated by NIST from author's data.
288.1 to 356.83	5.20409	1581.341	-33.50	Ambrose and Sprake, 1970	Coefficents calculated by NIST from author's data.
353. to 483.	5.31301	1676.569	-21.728	Hirata and Suda, 1967	Coefficents calculated by NIST from author's data.

Enthalpy of fusion

Δ_fusH (kJ/mol)	Temperature (K)	Reference	Comment
3.18	175.3	Domalski and Hearing, 1996	AC
2.196	176.	Maass and Walbauer, 1925	DH

Entropy of fusion

Δ_fusS (J/mol*K)	Temperature (K)	Reference	Comment
12.5	176.	Maass and Walbauer, 1925	DH

Entropy of fusion

Δ_fusS (J/mol*K)	Temperature (K)	Reference	Comment
3.7	161.1	Domalski and Hearing, 1996	CAL
18.1	175.3
4.0	157.3
18.3	175.6

Enthalpy of phase transition

ΔH_trs (kJ/mol)	Temperature (K)	Initial Phase	Final Phase	Reference	Comment
0.6360	157.34	crystaline, II	crystaline, I	Carlson and Westrum, 1971	DH
3.2154	175.59	crystaline, I	liquid	Carlson and Westrum, 1971	DH
1.540	103.	crystaline	glass	Sugisaki, Suga, et al., 1968	Glass transition.; DH
0.711	157.8	crystaline, II	crystaline, I	Staveley and Gupta, 1949	DH
3.159	175.4	crystaline, I	liquid	Staveley and Gupta, 1949	DH
0.6456	157.4	crystaline, II	crystaline, I	Kelley, 1929	DH
3.167	175.2	crystaline, I	liquid	Kelley, 1929	DH
0.590	161.1	crystaline, II	crystaline, I	Parks, 1925	DH
3.176	175.3	crystaline, I	liquid	Parks, 1925	DH

Entropy of phase transition

ΔS_trs (J/mol*K)	Temperature (K)	Initial Phase	Final Phase	Reference	Comment
4.04	157.34	crystaline, II	crystaline, I	Carlson and Westrum, 1971	DH
18.31	175.59	crystaline, I	liquid	Carlson and Westrum, 1971	DH
14.95	103.	crystaline	glass	Sugisaki, Suga, et al., 1968	Glass; DH
4.51	157.8	crystaline, II	crystaline, I	Staveley and Gupta, 1949	DH
18.01	175.4	crystaline, I	liquid	Staveley and Gupta, 1949	DH
4.10	157.4	crystaline, II	crystaline, I	Kelley, 1929	DH
18.08	175.2	crystaline, I	liquid	Kelley, 1929	DH
3.66	161.1	crystaline, II	crystaline, I	Parks, 1925	DH
18.12	175.3	crystaline, I	liquid	Parks, 1925	DH

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:

Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Henry's Law data, IR Spectrum, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, References, Notes

Data compiled as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
RCD - Robert C. Dunbar
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Reactions 1 to 50

+ Methyl Alcohol = ( • )

By formula: Cl^- + CH₄O = (Cl^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	69. ± 10.	kJ/mol	AVG	N/A	Average of 8 values; Individual data points
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	94.6	J/mol*K	HPMS	Evans and Keesee, 1991	gas phase; M
Δ_rS°	101.	J/mol*K	PHPMS	Hiraoka and Mizuse, 1987	gas phase; M
Δ_rS°	92.0	J/mol*K	PHPMS	Sieck, 1985	gas phase; M
Δ_rS°	95.8	J/mol*K	N/A	Larson and McMahon, 1984	gas phase; switching reaction(Cl-)t-C4H9OH, Entropy change calculated or estimated; French, Ikuta, et al., 1982; M
Δ_rS°	61.9	J/mol*K	PHPMS	Yamdagni, Payzant, et al., 1973	gas phase; Entropy change is questionable; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	42. ± 3.	kJ/mol	AVG	N/A	Average of 10 values; Individual data points

CH₃O^- + = Methyl Alcohol

By formula: CH₃O^- + H⁺ = CH₄O

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	1597. ± 8.	kJ/mol	AVG	N/A	Average of 6 values; Individual data points
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	1573.3 ± 2.6	kJ/mol	H-TS	Nee, Osterwalder, et al., 2006	gas phase; B
Δ_rG°	1573.4 ± 2.3	kJ/mol	H-TS	Osborn, Leahy, et al., 1998	gas phase; B
Δ_rG°	1565. ± 8.4	kJ/mol	IMRE	Bartmess, Scott, et al., 1979	gas phase; The acidity is 1.2 kcal/mol stronger than that from the D-EA cycle, due to the multi-compound fit for the acidity scale.; value altered from reference due to change in acidity scale; B
Δ_rG°	1567. ± 8.8	kJ/mol	H-TS	Haas and Harrison, 1993	gas phase; Both metastable and 50 eV collision energy.; B
Δ_rG°	1569.4 ± 2.5	kJ/mol	TDEq	Meot-ner and Sieck, 1986	gas phase; Experimental entropy: 21.5 eu, 0.6 less than H2O; B

CH₅O⁺ + Methyl Alcohol = (CH₅O⁺ • )

By formula: CH₅O⁺ + CH₄O = (CH₅O⁺ • CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	136.	kJ/mol	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rH°	135.	kJ/mol	PHPMS	Szulejko and McMahon, 1992	gas phase; M
Δ_rH°	134.	kJ/mol	PHPMS	Meot-Ner(Mautner), 1986	gas phase; M
Δ_rH°	138.	kJ/mol	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M
Δ_rH°	141.	kJ/mol	ICR	Larson and McMahon, 1982	gas phase; switching reaction((CH3)2OH+)(CH3)2O; Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	121.	J/mol*K	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rS°	122.	J/mol*K	PHPMS	Szulejko and McMahon, 1992	gas phase; M
Δ_rS°	111.	J/mol*K	PHPMS	Meot-Ner(Mautner), 1986	gas phase; M
Δ_rS°	128.	J/mol*K	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M
Δ_rS°	119.	J/mol*K	N/A	Larson and McMahon, 1982	gas phase; switching reaction((CH3)2OH+)(CH3)2O; Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	105.	kJ/mol	ICR	Larson and McMahon, 1982	gas phase; switching reaction((CH3)2OH+)(CH3)2O; Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M

CH₃O^- + Methyl Alcohol = (CH₃O^- • )

By formula: CH₃O^- + CH₄O = (CH₃O^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	123. ± 4.2	kJ/mol	TDAs	Paul and Kebarle, 1990	gas phase; B,M
Δ_rH°	120.5 ± 1.3	kJ/mol	TDAs	Meot-ner and Sieck, 1986	gas phase; B,M
Δ_rH°	123. ± 10.	kJ/mol	TDAs	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B
Δ_rH°	79.5 ± 8.4	kJ/mol	N/A	Moylan, Dodd, et al., 1985	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	133.	J/mol*K	PHPMS	Paul and Kebarle, 1990	gas phase; M
Δ_rS°	112.	J/mol*K	PHPMS	Meot-Ner(Mautner), 1986	gas phase; n; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	84.94	kJ/mol	IMRE	Mustanir, Matsuoka, et al., 2006	gas phase; B
Δ_rG°	82.8 ± 4.2	kJ/mol	TDAs	Paul and Kebarle, 1990	gas phase; B
Δ_rG°	87.0 ± 2.1	kJ/mol	TDAs	Meot-ner and Sieck, 1986	gas phase; B
Δ_rG°	84.9 ± 6.7	kJ/mol	TDAs	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
79.9	296.	FA	MacKay and Bohme, 1978	gas phase; From thermochemical cycle,switching reaction(CH3O-)H2O; Meot-Ner(Mautner), 1986; M

C₄H₉O^- + Methyl Alcohol = (C₄H₉O^- • )

By formula: C₄H₉O^- + CH₄O = (C₄H₉O^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	107. ± 4.2	kJ/mol	TDEq	Meot-Ner and Sieck, 1986	gas phase; B,M
Δ_rH°	97.9 ± 9.2	kJ/mol	CIDT	DeTuri and Ervin, 1999	gas phase; B
Δ_rH°	109. ± 10.	kJ/mol	N/A	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	117.	J/mol*K	N/A	Meot-Ner and Sieck, 1986	gas phase; Entropy change calculated or estimated; M
Δ_rS°	123.	J/mol*K	N/A	Caldwell, Rozeboom, et al., 1984	gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	42.68	kJ/mol	IMRE	Mustanir, Matsuoka, et al., 2006	gas phase; B
Δ_rG°	71.5 ± 6.7	kJ/mol	TDEq	Meot-Ner and Sieck, 1986	gas phase; B
Δ_rG°	72.4 ± 6.7	kJ/mol	IMRE	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; B,M

C₂H₅O^- + Methyl Alcohol = (C₂H₅O^- • )

By formula: C₂H₅O^- + CH₄O = (C₂H₅O^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	114. ± 12.	kJ/mol	IMRE	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M
Δ_rH°	107. ± 7.9	kJ/mol	CIDT	DeTuri and Ervin, 1999	gas phase; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	123.	J/mol*K	N/A	Caldwell, Rozeboom, et al., 1984	gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	77.8 ± 8.4	kJ/mol	IMRE	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
56.1	296.	FA	Mackay, Rakshit, et al., 1982	gas phase; From thermochemical cycle,switching reaction(CH3O-)CH3OH; Caldwell and Kebarle, 1986, Taft, 1983; M

( • Methyl Alcohol ) + = ( • 2)

By formula: (Cl^- • CH₄O) + CH₄O = (Cl^- • 2CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	59.0 ± 1.7	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	57.32 ± 0.84	kJ/mol	TDAs	Evans and Keesee, 1991	gas phase; B,M
Δ_rH°	59.0 ± 4.2	kJ/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B,M
Δ_rH°	54.4 ± 2.9	kJ/mol	TDAs	Yamdagni, Payzant, et al., 1973	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	101.	J/mol*K	PHPMS	Hiraoka and Mizuse, 1987	gas phase; M
Δ_rS°	92.0	J/mol*K	HPMS	Evans and Keesee, 1991	gas phase; M
Δ_rS°	81.2	J/mol*K	PHPMS	Yamdagni, Payzant, et al., 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	30.5	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	29.7	kJ/mol	TDAs	Evans and Keesee, 1991	gas phase; B
Δ_rG°	28. ± 4.2	kJ/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B
Δ_rG°	30.1 ± 1.7	kJ/mol	TDAs	Yamdagni, Payzant, et al., 1973	gas phase; B

( • 2 Methyl Alcohol ) + = ( • 3)

By formula: (Cl^- • 2CH₄O) + CH₄O = (Cl^- • 3CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	48.12 ± 0.84	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	45.2 ± 1.3	kJ/mol	TDAs	Evans and Keesee, 1991	gas phase; B,M
Δ_rH°	49.4 ± 4.2	kJ/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B,M
Δ_rH°	51.5 ± 2.5	kJ/mol	N/A	Yamdagni, Payzant, et al., 1973	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	95.8	J/mol*K	PHPMS	Hiraoka and Mizuse, 1987	gas phase; M
Δ_rS°	95.0	J/mol*K	HPMS	Evans and Keesee, 1991	gas phase; M
Δ_rS°	98.7	J/mol*K	PHPMS	Yamdagni, Payzant, et al., 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	21.2	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	16.7	kJ/mol	TDAs	Evans and Keesee, 1991	gas phase; B
Δ_rG°	21. ± 4.2	kJ/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B
Δ_rG°	21.8 ± 1.3	kJ/mol	TDAs	Yamdagni, Payzant, et al., 1973	gas phase; B

C₈H₅^- + Methyl Alcohol = (C₈H₅^- • )

By formula: C₈H₅^- + CH₄O = (C₈H₅^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	90.0 ± 8.4	kJ/mol	IMRE	Chabinyc and Brauman, 1999	gas phase; B
Δ_rH°	90. ± 12.	kJ/mol	N/A	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	123.	J/mol*K	N/A	Caldwell, Rozeboom, et al., 1984	gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	46.0 ± 8.4	kJ/mol	IMRE	Chabinyc and Brauman, 1999	gas phase; B
Δ_rG°	53.1 ± 8.4	kJ/mol	IMRE	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M

CN^- + Methyl Alcohol = (CN^- • )

By formula: CN^- + CH₄O = (CN^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	65.7 ± 3.3	kJ/mol	TDAs	Larson, Szulejko, et al., 1988	gas phase; B,M
Δ_rH°	69.5 ± 4.2	kJ/mol	TDAs	Meot-ner, 1988	gas phase; B
Δ_rH°	69. ± 15.	kJ/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	96.	J/mol*K	PHPMS	Larson, Szulejko, et al., 1988	gas phase; M
Δ_rS°	102.	J/mol*K	N/A	Larson and McMahon, 1987	gas phase; switching reaction,Thermochemical ladder(CN-)H2O, Entropy change calculated or estimated; Payzant, Yamdagni, et al., 1971; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	36.8 ± 0.84	kJ/mol	TDAs	Larson, Szulejko, et al., 1988	gas phase; B
Δ_rG°	43.5 ± 4.2	kJ/mol	TDAs	Meot-ner, 1988	gas phase; B
Δ_rG°	38. ± 9.6	kJ/mol	IMRE	Larson and McMahon, 1987	gas phase; B,M

+ Methyl Alcohol = ( • )

By formula: Li⁺ + CH₄O = (Li⁺ • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	154. ± 7.9	kJ/mol	CIDT	Rodgers and Armentrout, 2000	RCD
Δ_rH°	159.	kJ/mol	ICR	Woodin and Beauchamp, 1978	gas phase; switching reaction(Li+)H20, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M
Δ_rH°	160.	kJ/mol	ICR	Staley and Beauchamp, 1975	gas phase; switching reaction(Li+)H2O, from graph; Dzidic and Kebarle, 1970 extrapolated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	110.	J/mol*K	N/A	Woodin and Beauchamp, 1978	gas phase; switching reaction(Li+)H20, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	127.	kJ/mol	ICR	Woodin and Beauchamp, 1978	gas phase; switching reaction(Li+)H20, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M

+ Methyl Alcohol = ( • )

By formula: I^- + CH₄O = (I^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	49.79 ± 0.84	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	47.3 ± 4.2	kJ/mol	TDAs	Caldwell and Kebarle, 1984	gas phase; B,M
Δ_rH°	46.9	kJ/mol	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Δ_rH°	46.	kJ/mol	PHPMS	Caldwell, Masucci, et al., 1989	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	71.5	J/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Δ_rS°	74.5	J/mol*K	PHPMS	Caldwell and Kebarle, 1984	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	24.1	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	25. ± 4.2	kJ/mol	TDAs	Caldwell and Kebarle, 1984	gas phase; B
Δ_rG°	24. ± 8.4	kJ/mol	IMRE	Tanabe, Morgon, et al., 1996	gas phase; Anchored to H2O..I- of Caldwell and Kebarle, 1984; B

C₂H₅O⁺ + Methyl Alcohol = (C₂H₅O⁺ • )

By formula: C₂H₅O⁺ + CH₄O = (C₂H₅O⁺ • CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	127.	kJ/mol	ICR	Larson and McMahon, 1982	gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	113.	J/mol*K	N/A	Larson and McMahon, 1982	gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	93.3	kJ/mol	ICR	Larson and McMahon, 1982	gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M

C₂H₇O⁺ + Methyl Alcohol = (C₂H₇O⁺ • )

By formula: C₂H₇O⁺ + CH₄O = (C₂H₇O⁺ • CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	124.	kJ/mol	ICR	Larson and McMahon, 1982	gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	111.	J/mol*K	N/A	Larson and McMahon, 1982	gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	90.8	kJ/mol	ICR	Larson and McMahon, 1982	gas phase; switching reaction((CH3)2OH+)(CH3)2O, Entropy change calculated or estimated; Grimsrud and Kebarle, 1973, Lias, Liebman, et al., 1984, Keesee and Castleman, 1986; M

C₃H₇O^- + Methyl Alcohol = (C₃H₇O^- • )

By formula: C₃H₇O^- + CH₄O = (C₃H₇O^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	113. ± 12.	kJ/mol	N/A	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	123.	J/mol*K	N/A	Caldwell, Rozeboom, et al., 1984	gas phase; switching reaction(CH3O-)CH3OH, Entropy change calculated or estimated; re-evaluated using Meot-Ner(Mautner), 1986 and Paul and Kebarle, 1990; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	76.1 ± 8.4	kJ/mol	IMRE	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B,M

+ Methyl Alcohol = ( • )

By formula: F^- + CH₄O = (F^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	124. ± 8.4	kJ/mol	IMRE	Larson and McMahon, 1983	gas phase; B,M
Δ_rH°	123. ± 9.2	kJ/mol	CIDT	DeTuri and Ervin, 1999	gas phase; B
Δ_rH°	97.5 ± 8.4	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	105.	J/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Δ_rS°	94.6	J/mol*K	N/A	Larson and McMahon, 1983	gas phase; switching reaction(F-)H2O, Entropy change calculated or estimated; Arshadi, Yamdagni, et al., 1970; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	95.4 ± 8.4	kJ/mol	IMRE	Larson and McMahon, 1983	gas phase; B,M
Δ_rG°	66.1 ± 8.4	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 3 Methyl Alcohol ) + = ( • 4)

By formula: (Cl^- • 3CH₄O) + CH₄O = (Cl^- • 4CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	43.9 ± 4.2	kJ/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B,M
Δ_rH°	43.93	kJ/mol	TDAs	Evans and Keesee, 1991	gas phase; B
Δ_rH°	46.9 ± 2.5	kJ/mol	TDAs	Yamdagni, Payzant, et al., 1973	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	95.8	J/mol*K	PHPMS	Hiraoka and Mizuse, 1987	gas phase; M
Δ_rS°	110.	J/mol*K	PHPMS	Yamdagni, Payzant, et al., 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	15. ± 4.2	kJ/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B
Δ_rG°	15.5	kJ/mol	TDAs	Evans and Keesee, 1991	gas phase; B
Δ_rG°	13.8 ± 0.84	kJ/mol	TDAs	Yamdagni, Payzant, et al., 1973	gas phase; B

+ Methyl Alcohol = ( • )

By formula: Br^- + CH₄O = (Br^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	60.67 ± 0.42	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	58.2 ± 4.2	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	73.6	J/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	33.5 ± 0.42	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	36. ± 8.4	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B
Δ_rG°	35. ± 8.4	kJ/mol	IMRE	Tanabe, Morgon, et al., 1996	gas phase; Anchored to H2O..Br- of Hiraoka, Mizure, et al., 19882; B

C₃H₉Si⁺ + Methyl Alcohol = (C₃H₉Si⁺ • )

By formula: C₃H₉Si⁺ + CH₄O = (C₃H₉Si⁺ • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	164.	kJ/mol	PHPMS	Wojtyniak and Stone, 1986	gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)H2O, Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	124.	J/mol*K	N/A	Wojtyniak and Stone, 1986	gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)H2O, Entropy change calculated or estimated; M

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
106.	468.	PHPMS	Wojtyniak and Stone, 1986	gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)H2O, Entropy change calculated or estimated; M

+ Methyl Alcohol = ( • )

By formula: Na⁺ + CH₄O = (Na⁺ • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	97.1 ± 5.4	kJ/mol	CIDC	Amicangelo and Armentrout, 2001	Anchor NH3=24.41; RCD
Δ_rH°	91.6 ± 5.9	kJ/mol	CIDT	Armentrout and Rodgers, 2000	RCD
Δ_rH°	100. ± 0.8	kJ/mol	HPMS	Hoyau, Norrman, et al., 1999	RCD
Δ_rH°	111. ± 0.8	kJ/mol	HPMS	Guo, Conklin, et al., 1989	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	85800.	J/mol*K	HPMS	Hoyau, Norrman, et al., 1999	RCD
Δ_rS°	102.	J/mol*K	HPMS	Guo, Conklin, et al., 1989	gas phase; M

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
72.4	298.	IMRE	McMahon and Ohanessian, 2000	Anchor alanine=39.89; RCD

( • 4 Methyl Alcohol ) + = ( • 5)

By formula: (Cl^- • 4CH₄O) + CH₄O = (Cl^- • 5CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	38. ± 4.2	kJ/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B,M
Δ_rH°	43.9 ± 2.1	kJ/mol	N/A	Yamdagni, Payzant, et al., 1973	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	90.8	J/mol*K	PHPMS	Hiraoka and Mizuse, 1987	gas phase; M
Δ_rS°	107.	J/mol*K	PHPMS	Yamdagni, Payzant, et al., 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	11. ± 4.2	kJ/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; B
Δ_rG°	12.1 ± 0.42	kJ/mol	TDAs	Yamdagni, Payzant, et al., 1973	gas phase; B

+ = 2 Methyl Alcohol +

By formula: H₂O + C₅H₁₂O₂ = 2CH₄O + C₃H₆O

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	20.3 ± 0.04	kJ/mol	Cm	Wiberg, Morgan, et al., 1994	liquid phase; ALS
Δ_rH°	20.43 ± 0.04	kJ/mol	Cm	Wiberg and Squires, 1979	liquid phase; Heat of hydrolysis; ALS
Δ_rH°	20.433 ± 0.028	kJ/mol	Cm	Wiberg and Squires, 1979, 2	liquid phase; solvent: Water; Hydrolysis; ALS
Δ_rH°	-16.5 ± 0.2	kJ/mol	Cm	Stern and Dorer, 1962	liquid phase; Reanalyzed by Cox and Pilcher, 1970, Original value = 15.4 ± 0.2 kJ/mol; Heat of hydrolysis; ALS

(CH₅O⁺ • Methyl Alcohol ) + = (CH₅O⁺ • 2)

By formula: (CH₅O⁺ • CH₄O) + CH₄O = (CH₅O⁺ • 2CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	88.7	kJ/mol	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rH°	87.9	kJ/mol	PHPMS	Meot-Ner(Mautner), 1986	gas phase; M
Δ_rH°	89.1	kJ/mol	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	113.	J/mol*K	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rS°	108.	J/mol*K	PHPMS	Meot-Ner(Mautner), 1986	gas phase; M
Δ_rS°	118.	J/mol*K	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M

C₅H₁₁O^- + Methyl Alcohol = (C₅H₁₁O^- • )

By formula: C₅H₁₁O^- + CH₄O = (C₅H₁₁O^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	108. ± 12.	kJ/mol	N/A	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	71.1 ± 8.4	kJ/mol	IMRE	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B

C₆H₁₁S₂^- + Methyl Alcohol = (C₆H₁₁S₂^- • )

By formula: C₆H₁₁S₂^- + CH₄O = (C₆H₁₁S₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	92. ± 10.	kJ/mol	N/A	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	55.2 ± 6.7	kJ/mol	IMRE	Caldwell, Rozeboom, et al., 1984	gas phase; Reanchored to average data from Paul and Kebarle, 1990 and Meot-ner and Sieck, 1986.; value altered from reference due to change in acidity scale; B

( • Methyl Alcohol ) + = ( • 2)

By formula: (Cu⁺ • CH₄O) + CH₄O = (Cu⁺ • 2CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	57.7	kJ/mol	HPMS	El-Shall, Schriver, et al., 1989	gas phase; Entropy change calculated or estimated, Cu+ from laser desorption; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	100.	J/mol*K	N/A	El-Shall, Schriver, et al., 1989	gas phase; Entropy change calculated or estimated, Cu+ from laser desorption; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	26.	kJ/mol	HPMS	El-Shall, Schriver, et al., 1989	gas phase; Entropy change calculated or estimated, Cu+ from laser desorption; M

(CH₅O⁺ • 2 • 3 Methyl Alcohol ) + = (CH₅O⁺ • 3 • 3)

By formula: (CH₅O⁺ • 2H₂O • 3CH₄O) + H₂O = (CH₅O⁺ • 3H₂O • 3CH₄O)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	38.	kJ/mol	PHPMS	Meot-Ner(Mautner), 1986	gas phase; n, Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	92.	J/mol*K	N/A	Meot-Ner(Mautner), 1986	gas phase; n, Entropy change calculated or estimated; M

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
13.	272.	PHPMS	Meot-Ner(Mautner), 1986	gas phase; n, Entropy change calculated or estimated; M

(CH₅O⁺ • 3 • 2 Methyl Alcohol ) + = (CH₅O⁺ • 4 • 2)

By formula: (CH₅O⁺ • 3H₂O • 2CH₄O) + H₂O = (CH₅O⁺ • 4H₂O • 2CH₄O)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	39.	kJ/mol	PHPMS	Meot-Ner(Mautner), 1986	gas phase; n, Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	92.	J/mol*K	N/A	Meot-Ner(Mautner), 1986	gas phase; n, Entropy change calculated or estimated; M

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
13.	272.	PHPMS	Meot-Ner(Mautner), 1986	gas phase; n, Entropy change calculated or estimated; M

(CH₅O⁺ • 4 • Methyl Alcohol ) + = (CH₅O⁺ • 5 • )

By formula: (CH₅O⁺ • 4H₂O • CH₄O) + H₂O = (CH₅O⁺ • 5H₂O • CH₄O)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	39.	kJ/mol	PHPMS	Meot-Ner(Mautner), 1986	gas phase; n, Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	92.	J/mol*K	N/A	Meot-Ner(Mautner), 1986	gas phase; n, Entropy change calculated or estimated; M

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
15.	269.	PHPMS	Meot-Ner(Mautner), 1986	gas phase; n, Entropy change calculated or estimated; M

(CH₅O⁺ • ) + Methyl Alcohol = (CH₅O⁺ • • )

By formula: (CH₅O⁺ • H₂O) + CH₄O = (CH₅O⁺ • CH₄O • H₂O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	103.	kJ/mol	PHPMS	Meot-Ner(Mautner), 1986	gas phase; n, Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	120.	J/mol*K	N/A	Meot-Ner(Mautner), 1986	gas phase; n, Entropy change calculated or estimated; M

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
48.5	452.	PHPMS	Meot-Ner(Mautner), 1986	gas phase; n, Entropy change calculated or estimated; M

C₆H₅NO₂^- + Methyl Alcohol = (C₆H₅NO₂^- • )

By formula: C₆H₅NO₂^- + CH₄O = (C₆H₅NO₂^- • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	63.18 ± 0.84	kJ/mol	TDAs	Sieck, 1985	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	109.	J/mol*K	PHPMS	Sieck, 1985	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	30.5 ± 1.7	kJ/mol	TDAs	Sieck, 1985	gas phase; B
Δ_rG°	26. ± 6.7	kJ/mol	IMRE	Chowdhury, Grimsrud, et al., 1987	gas phase; Free energy affinity at 70°C.; B

Free energy of reaction

Δ_rG° (kJ/mol)	T (K)	Method	Reference	Comment
26.	343.	PHPMS	Chowdhury, 1987	gas phase; M

+ Methyl Alcohol = ( • )

By formula: Cu⁺ + CH₄O = (Cu⁺ • CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	56.1	kJ/mol	HPMS	El-Shall, Schriver, et al., 1989	gas phase; Entropy change calculated or estimated, Cu+ from laser desorption; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	100.	J/mol*K	N/A	El-Shall, Schriver, et al., 1989	gas phase; Entropy change calculated or estimated, Cu+ from laser desorption; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	25.	kJ/mol	HPMS	El-Shall, Schriver, et al., 1989	gas phase; Entropy change calculated or estimated, Cu+ from laser desorption; M

( • Methyl Alcohol ) + = ( • 2)

By formula: (F^- • CH₄O) + CH₄O = (F^- • 2CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	84.9 ± 1.3	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	80.8 ± 4.2	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	97.1	J/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	54.27	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	51.9 ± 8.4	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 2 Methyl Alcohol ) + = ( • 3)

By formula: (F^- • 2CH₄O) + CH₄O = (F^- • 3CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	63.2 ± 2.5	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	60.7 ± 4.2	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	88.7	J/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	33.7	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	34. ± 8.4	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 2 Methyl Alcohol ) + = ( • 3)

By formula: (Br^- • 2CH₄O) + CH₄O = (Br^- • 3CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	39.7 ± 2.1	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	44.4 ± 4.2	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	90.4	J/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	17.8	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	18. ± 8.4	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • Methyl Alcohol ) + = ( • 2)

By formula: (Br^- • CH₄O) + CH₄O = (Br^- • 2CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	50.21 ± 0.84	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	52.3 ± 4.2	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	86.6	J/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	23.5	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	26. ± 8.4	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 2 Methyl Alcohol ) + = ( • 3)

By formula: (I^- • 2CH₄O) + CH₄O = (I^- • 3CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	32.2 ± 2.5	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	41. ± 4.2	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	93.7	J/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	14.3	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	13. ± 8.4	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • Methyl Alcohol ) + = ( • 2)

By formula: (I^- • CH₄O) + CH₄O = (I^- • 2CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	39.7 ± 0.84	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rH°	46.4 ± 4.2	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	94.6	J/mol*K	PHPMS	Hiraoka and Yamabe, 1991	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	17.8	kJ/mol	TDAs	Bogdanov, Peschke, et al., 1999	gas phase; B
Δ_rG°	18. ± 8.4	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; B

( • 10 Methyl Alcohol ) + = ( • 11)

By formula: (Cl^- • 10CH₄O) + CH₄O = (Cl^- • 11CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	31. ± 4.2	kJ/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; Estimated entropy; single temperature measurement; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	84.	J/mol*K	N/A	Hiraoka and Mizuse, 1987	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	5.4 ± 4.2	kJ/mol	TDAs	Hiraoka and Mizuse, 1987	gas phase; Estimated entropy; single temperature measurement; B

( • Methyl Alcohol ) + = ( • 2)

By formula: (Na⁺ • CH₄O) + CH₄O = (Na⁺ • 2CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	85.8 ± 5.9	kJ/mol	CIDC	Amicangelo and Armentrout, 2001	Anchor NH3=24.41; RCD
Δ_rH°	89.5 ± 6.7	kJ/mol	CIDC	Amicangelo and Armentrout, 2001	Anchor NH3=24.41; RCD
Δ_rH°	85.8 ± 6.7	kJ/mol	CIDC	Amicangelo and Armentrout, 2001	Anchor NH3=24.41; RCD
Δ_rH°	84.5 ± 0.8	kJ/mol	HPMS	Guo, Conklin, et al., 1989	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	90.8	J/mol*K	HPMS	Guo, Conklin, et al., 1989	gas phase; M

H₄ClO₂^- + Methyl Alcohol + 2 = CH₈ClO₃^-

By formula: H₄ClO₂^- + CH₄O + 2H₂O = CH₈ClO₃^-

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	43.51 ± 0.84	kJ/mol	TDAs	Evans and Keesee, 1991	gas phase; B
Δ_rH°	47.7 ± 1.3	kJ/mol	TDAs	Evans and Keesee, 1991	gas phase; For solvation by MeOH of core ion; B
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	24.3	kJ/mol	TDAs	Evans and Keesee, 1991	gas phase; B
Δ_rG°	25.1	kJ/mol	TDAs	Evans and Keesee, 1991	gas phase; For solvation by MeOH of core ion; B

(CH₅O⁺ • 2 Methyl Alcohol ) + = (CH₅O⁺ • • 2)

By formula: (CH₅O⁺ • 2CH₄O) + C₂H₆O = (CH₅O⁺ • C₂H₆O • 2CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	72.0	kJ/mol	PHPMS	Hiraoka, Grimsrud, et al., 1974	gas phase; n, note proton affinities, core ion may be (CH3)2OH+; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	120.	J/mol*K	PHPMS	Hiraoka, Grimsrud, et al., 1974	gas phase; n, note proton affinities, core ion may be (CH3)2OH+; M

(CH₅O⁺ • 3 Methyl Alcohol ) + = (CH₅O⁺ • • 3)

By formula: (CH₅O⁺ • 3CH₄O) + C₂H₆O = (CH₅O⁺ • C₂H₆O • 3CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	57.3	kJ/mol	PHPMS	Hiraoka, Grimsrud, et al., 1974	gas phase; n, note proton affinities, core ion may be (CH3)2OH+; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	129.	J/mol*K	PHPMS	Hiraoka, Grimsrud, et al., 1974	gas phase; n, note proton affinities, core ion may be (CH3)2OH+; M

(CH₅O⁺ • 2 Methyl Alcohol ) + = (CH₅O⁺ • 3)

By formula: (CH₅O⁺ • 2CH₄O) + CH₄O = (CH₅O⁺ • 3CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	58.6	kJ/mol	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rH°	67.4	kJ/mol	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	100.	J/mol*K	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rS°	121.	J/mol*K	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M

(CH₅O⁺ • 3 Methyl Alcohol ) + = (CH₅O⁺ • 4)

By formula: (CH₅O⁺ • 3CH₄O) + CH₄O = (CH₅O⁺ • 4CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	47.3	kJ/mol	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rH°	56.5	kJ/mol	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	93.3	J/mol*K	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rS°	120.	J/mol*K	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M

(CH₅O⁺ • 4 Methyl Alcohol ) + = (CH₅O⁺ • 5)

By formula: (CH₅O⁺ • 4CH₄O) + CH₄O = (CH₅O⁺ • 5CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	42.7	kJ/mol	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rH°	52.3	kJ/mol	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	98.3	J/mol*K	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rS°	130.	J/mol*K	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M

(CH₅O⁺ • Methyl Alcohol ) + = (CH₅O⁺ • • )

By formula: (CH₅O⁺ • CH₄O) + C₂H₆O = (CH₅O⁺ • C₂H₆O • CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	91.6	kJ/mol	PHPMS	Hiraoka, Grimsrud, et al., 1974	gas phase; n, note proton affinities, core ion may be (CH3)2OH+; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	105.	J/mol*K	PHPMS	Hiraoka, Grimsrud, et al., 1974	gas phase; n, note proton affinities, core ion may be (CH3)2OH+; M

(CH₅O⁺ • 5 Methyl Alcohol ) + = (CH₅O⁺ • 6)

By formula: (CH₅O⁺ • 5CH₄O) + CH₄O = (CH₅O⁺ • 6CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	39.	kJ/mol	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rH°	49.8	kJ/mol	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	98.3	J/mol*K	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rS°	138.	J/mol*K	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M

(CH₅O⁺ • 6 Methyl Alcohol ) + = (CH₅O⁺ • 7)

By formula: (CH₅O⁺ • 6CH₄O) + CH₄O = (CH₅O⁺ • 7CH₄O)

Bond type: Hydrogen bonds of the type OH-O between organics

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	38.	kJ/mol	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rH°	50.2	kJ/mol	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	108.	J/mol*K	PHPMS	Meot-Ner (Mautner), 1992	gas phase; M
Δ_rS°	149.	J/mol*K	PHPMS	Grimsrud and Kebarle, 1973	gas phase; M

( • 11 Methyl Alcohol ) + = ( • 12)

By formula: (F^- • 11CH₄O) + CH₄O = (F^- • 12CH₄O)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	36. ± 4.2	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; Entropy estimated.; B,M
Quantity	Value	Units	Method	Reference	Comment
Δ_rS°	100.	J/mol*K	N/A	Hiraoka and Yamabe, 1991	gas phase; Entropy change calculated or estimated; M
Quantity	Value	Units	Method	Reference	Comment
Δ_rG°	4.6 ± 8.4	kJ/mol	TDAs	Hiraoka and Yamabe, 1991	gas phase; Entropy estimated.; B

Henry's Law data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, References, Notes

Data compiled by: Rolf Sander

Henry's Law constant (water solution)

k_H(T) = k°_H exp(d(ln(k_H))/d(1/T) ((1/T) - 1/(298.15 K)))
k°_H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(k_H))/d(1/T) = Temperature dependence constant (K)

k°_H (mol/(kg*bar))	d(ln(k_H))/d(1/T) (K)	Method	Reference	Comment
140.		Q	N/A	missing citation give several references for the Henry's law constants but don't assign them to specific species.
220.		X	N/A
220.	5200.	M	N/A
220.		X	N/A	Value given here as quoted by missing citation.
160.	5600.	X	N/A
230.		M	N/A
210.		M,X	Timmermans, 1960	Value given here as quoted by missing citation.
230.		M	Butler, Ramchandani, et al., 1935	This paper supersedes earlier work with more concentrated solutions Butler, Thomson, et al., 1933.

IR Spectrum

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, References, Notes

Data compiled by: Coblentz Society, Inc.

Data compiled by: Tanya L. Myers, Russell G. Tonkyn, Ashley M. Oeck, Tyler O. Danby, John S. Loring, Matthew S. Taubman, Stephen W. Sharpe, Jerome C. Birnbaum, and Timothy J. Johnson

liquid; Bruker Tensor 27 FTIR; 0.4821395 cm^-1 resolution

Data compiled by: Pamela M. Chu, Franklin R. Guenther, George C. Rhoderick, and Walter J. Lafferty

gas; IFS66V (Bruker); 3-Term B-H Apodization
0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm^-1 resolution
gas; IFS66V (Bruker); Boxcar Apodization
0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm^-1 resolution
gas; IFS66V (Bruker); Happ Genzel Apodization
0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm^-1 resolution
gas; IFS66V (Bruker); NB Strong Apodization
0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm^-1 resolution
gas; IFS66V (Bruker); Triangular Apodization
0.1250, 0.2410, 0.4820, 0.9640, 1.9290 cm^-1 resolution

Mass spectrum (electron ionization)

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, IR Spectrum, Vibrational and/or electronic energy levels, References, Notes

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Additional Data

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Owner	NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved.
Origin	Japan AIST/NIMC Database- Spectrum MS-NW- 72
NIST MS number	229809

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Vibrational and/or electronic energy levels

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, IR Spectrum, Mass spectrum (electron ionization), References, Notes

Data compiled by: Takehiko Shimanouchi

Gas Symmetry: C_s Symmetry Number σ = 1

Sym.	No	Approximate	Selected Freq.		Infrared		Raman		Comments

Species		type of mode	Value	Rating	Value	Phase	Value	Phase

a'	1	OH str	3681	A	3681 M	gas
a'	2	CH3 d-str	3000	C	3000 M	gas
a'	3	CH3 s-str	2844	A	2844 S	gas
a'	4	CH3 d-deform	1477	B	1477 M	gas			OV(ν₁₀)
a'	5	CH3 s-deform	1455	A	1455 M	gas
a'	6	OH bend	1345	B	1345 S	gas
a'	7	CH3 rock	1060	D	1060 W	gas			OV(ν₈)
a'	8	CO str	1033	A	1033 VS	gas	1032	gas
a	9	CH3 d-str	2960	C	2960 S	gas	2955	gas
a	10	CH3 d-deform	1477	B	1477 M	gas			OV(ν₄)
a	11	CH3 rock	1165	C			1165	liq.
a	12	Torsion	295	A	80~300	gas			?/? Value of ν₁₂ is undefined because of large coupling between internal & overall rotations.
a	12	Torsion	200	E	80~300	gas			?/? Value of ν₁₂ is undefined because of large coupling between internal & overall rotations.

Source: Shimanouchi, 1972

Liquid Symmetry: C_s Symmetry Number σ = 1

Sym.	No	Approximate	Selected Freq.		Infrared		Raman		Comments

Species		type of mode	Value	Rating	Value	Phase	Value	Phase

a'	1	OH str	3328	D	3328 vb	liq.	3270-3480	liq.
a'	2	CH3 d-str	2980	C	2980 M	liq.	2993	liq.
a'	3	CH3 s-str	2834	C	2834 S	liq.	2834	liq.
a'	4	CH3 d-deform	1480	C	1480 M	liq.	1464	liq.	OV(ν₁₀)
a'	5	CH3 s-deform	1450	C	1450 M	liq.
a'	6	OH bend	1418	C	1418 M b	liq.
a'	7	CH3 rock	1115	C	1115 M	liq.	1107	liq.
a'	8	CO str	1030	C	1030 VS	liq.	1033	liq.
a	9	CH3 d-str	2946	C	2946 S	liq.	2940	liq.
a	10	CH3 d-deform	1480	C	1480 M	liq.	1464	liq.	OV(ν₄)
a	11	CH3 rock	1165	C			1165	liq.
a	12	Torsion	655	D	655 vb	liq.

Source: Shimanouchi, 1972

Notes

Very strong

Strong

Medium

Weak

Broad

Very broad

Overlapped by band indicated in parentheses.

0~1 cm^-1 uncertainty

1~3 cm^-1 uncertainty

3~6 cm^-1 uncertainty

6~15 cm^-1 uncertainty

15~30 cm^-1 uncertainty

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Notes

Symbols used in this document:

C_p,gas	Constant pressure heat capacity of gas
C_p,liquid	Constant pressure heat capacity of liquid
C_p,solid	Constant pressure heat capacity of solid
P_c	Critical pressure
S°_liquid	Entropy of liquid at standard conditions
S°_{solid,1 bar}	Entropy of solid at standard conditions (1 bar)
T	Temperature
T_boil	Boiling point
T_c	Critical temperature
T_fus	Fusion (melting) point
T_triple	Triple point temperature
V_c	Critical volume
d(ln(k_H))/d(1/T)	Temperature dependence parameter for Henry's Law constant
k°_H	Henry's Law constant at 298.15K
ΔH_trs	Enthalpy of phase transition
ΔS_trs	Entropy of phase transition
Δ_cH°_gas	Enthalpy of combustion of gas at standard conditions
Δ_cH°_liquid	Enthalpy of combustion of liquid at standard conditions
Δ_fH°_gas	Enthalpy of formation of gas at standard conditions
Δ_fH°_liquid	Enthalpy of formation of liquid at standard conditions
Δ_fusH	Enthalpy of fusion
Δ_fusS	Entropy of fusion
Δ_rG°	Free energy of reaction at standard conditions
Δ_rH°	Enthalpy of reaction at standard conditions
Δ_rS°	Entropy of reaction at standard conditions
Δ_vapH	Enthalpy of vaporization
Δ_vapH°	Enthalpy of vaporization at standard conditions
ρ_c	Critical density

Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
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Methyl Alcohol

Data at NIST subscription sites:

Gas phase thermochemistry data

Constant pressure heat capacity of gas

Constant pressure heat capacity of gas

Condensed phase thermochemistry data

Constant pressure heat capacity of liquid

Constant pressure heat capacity of solid

Phase change data

Enthalpy of vaporization

Enthalpy of vaporization

Antoine Equation Parameters

Enthalpy of fusion

Entropy of fusion

Entropy of fusion

Enthalpy of phase transition

Entropy of phase transition

Reaction thermochemistry data

Reactions 1 to 50

Free energy of reaction

Free energy of reaction

Free energy of reaction

Free energy of reaction

Free energy of reaction

Free energy of reaction

Free energy of reaction

Free energy of reaction

Free energy of reaction

Henry's Law data

Henry's Law constant (water solution)

IR Spectrum

Mass spectrum (electron ionization)

Spectrum

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Credits

Additional Data

Vibrational and/or electronic energy levels

Gas Symmetry: Cs Symmetry Number σ = 1

Liquid Symmetry: Cs Symmetry Number σ = 1

Notes

References

Notes

Gas Symmetry: C_s Symmetry Number σ = 1

Liquid Symmetry: C_s Symmetry Number σ = 1