Methyl Alcohol
- Formula: CH4O
- Molecular weight: 32.0419
- 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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- Other data available:
- Reaction thermochemistry data: reactions 1 to 50, reactions 51 to 100, reactions 101 to 150, reactions 151 to 200, reactions 201 to 250, reactions 251 to 300
- Ion clustering data
- IR Spectrum
- Mass spectrum (electron ionization)
- Vibrational and/or electronic energy levels
- Gas Chromatography
- Fluid Properties
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Henry's Law data, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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 |
---|---|---|---|---|---|
ΔfH°gas | -49. ± 3. | kcal/mol | AVG | N/A | Average of 9 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°gas | -182.52 ± 0.048 | kcal/mol | Cm | Rossini, 1932 | Flame Calorimetry; Corresponding ΔfHºgas = -48.157 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
Constant pressure heat capacity of gas
Cp,gas (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
8.126 | 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 |
8.831 | 100. | ||
9.235 | 150. | ||
9.491 | 200. | ||
10.18 | 273.15 | ||
10.53 ± 0.007 | 298.15 | ||
10.56 | 300. | ||
12.34 | 400. | ||
14.27 | 500. | ||
16.06 | 600. | ||
17.65 | 700. | ||
19.06 | 800. | ||
20.30 | 900. | ||
21.40 | 1000. | ||
22.36 | 1100. | ||
23.21 | 1200. | ||
23.958 | 1300. | ||
24.613 | 1400. | ||
25.191 | 1500. | ||
26.34 | 1750. | ||
27.20 | 2000. | ||
27.84 | 2250. | ||
28.35 | 2500. | ||
28.7 | 2750. | ||
28.9 | 3000. |
Constant pressure heat capacity of gas
Cp,gas (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
10.13 ± 0.30 | 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/mol*K. 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 |
11.46 ± 0.30 | 345.6 | ||
11.19 ± 0.28 | 347.35 | ||
11.01 ± 0.30 | 349.65 | ||
11.37 ± 0.28 | 356.55 | ||
11.17 ± 0.30 | 358.15 | ||
11.52 ± 0.30 | 358.85 | ||
11.67 ± 0.30 | 359.85 | ||
12.02 ± 0.30 | 368.15 | ||
11.71 ± 0.28 | 373.35 | ||
12.26 ± 0.30 | 382.15 | ||
12.22 ± 0.28 | 398.95 | ||
12.51 ± 0.30 | 401.15 | ||
12.27 ± 0.28 | 401.35 | ||
12.43 ± 0.10 | 403.2 | ||
12.72 ± 0.30 | 420.15 | ||
12.88 ± 0.28 | 431.45 | ||
13.09 ± 0.28 | 442.15 | ||
13.36 ± 0.30 | 442.65 | ||
13.39 ± 0.28 | 457.35 | ||
13.67 ± 0.10 | 464.0 | ||
13.80 ± 0.28 | 477.75 | ||
13.95 ± 0.28 | 485.05 | ||
14.23 ± 0.28 | 498.95 | ||
14.44 ± 0.30 | 521.2 | ||
14.68 ± 0.28 | 521.35 | ||
15.37 ± 0.28 | 555.95 | ||
15.88 ± 0.28 | 581.35 | ||
15.96 ± 0.28 | 585.35 |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, Phase change data, Henry's Law data, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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 |
---|---|---|---|---|---|
ΔfH°liquid | -56.97 | kcal/mol | Ccr | Baroody and Carpenter, 1972 | ALS |
ΔfH°liquid | -57.24 ± 0.04 | kcal/mol | Ccb | Chao and Rossini, 1965 | see Rossini, 1934; ALS |
ΔfH°liquid | -57.10 ± 0.86 | kcal/mol | Ccb | Green, 1960 | Reanalyzed by Cox and Pilcher, 1970, Original value = -57.01 ± 0.05 kcal/mol; ALS |
ΔfH°liquid | -59.89 | kcal/mol | Ccb | Parks, 1925 | ALS |
ΔfH°liquid | -60.1 ± 1.2 | kcal/mol | Ccb | Richards and Davis, 1920 | DRB |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -173.45 ± 0.03 | kcal/mol | Ccb | Chao and Rossini, 1965 | see Rossini, 1934; Corresponding ΔfHºliquid = -57.23 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°liquid | -173.64 ± 0.05 | kcal/mol | Ccb | Green, 1960 | Corresponding ΔfHºliquid = -57.04 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°liquid | -173.60 ± 0.048 | kcal/mol | Ccb | Rossini, 1931 | Corresponding ΔfHºliquid = -57.082 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°liquid | -170.90 | kcal/mol | Ccb | Parks, 1925 | Corresponding ΔfHºliquid = -59.78 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
ΔcH°liquid | -170.61 | kcal/mol | Ccb | Richards and Davis, 1920 | At 291 K; Corresponding ΔfHºliquid = -60.072 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°liquid | 30.399 | cal/mol*K | N/A | Carlson and Westrum, 1971 | DH |
S°liquid | 30.31 | cal/mol*K | N/A | Kelley, 1929 | DH |
S°liquid | 31.00 | cal/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 | 32.60 | cal/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 | 0.2670 | cal/mol*K | N/A | Ahlberg, Blanchard, et al., 1937 | DH |
Constant pressure heat capacity of liquid
Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
19.0 | 298.15 | Filatov and Afanas'ev, 1992 | DH |
19.39 | 298.15 | Khasanshin and Zykova, 1989 | T = 175 to 338 K. Unsmoothed experimental datum.; DH |
19.18 | 298.15 | Andreoli-Ball, Patterson, et al., 1988 | DH |
19.20 | 298.15 | Okano, Ogawa, et al., 1988 | DH |
19.4 | 298.15 | Lankford and Criss, 1987 | DH |
19.44 | 298. | Korolev, Kukharenko, et al., 1986 | DH |
19.19 | 298.15 | Ogawa and Murakami, 1986 | DH |
19.49 | 298.15 | Tanaka, Toyama, et al., 1986 | DH |
19.17 | 298.15 | Costas and Patterson, 1985 | T = 298.15, 313.15 K.; DH |
19.47 | 298.15 | Zegers and Somsen, 1984 | DH |
18.86 | 288.15 | Benson and D'Arcy, 1982 | DH |
19.58 | 298.15 | Villamanan, Casanova, et al., 1982 | DH |
19.3 | 293.15 | Atalla, El-Sharkawy, et al., 1981 | DH |
19.39 | 298.15 | Carlson and Westrum, 1971 | T = 5 to 332 K.; DH |
20.0 | 298. | Deshpande and Bhatagadde, 1971 | T = 298 to 318 K.; DH |
20.5 | 313.2 | Paz Andrade, Paz, et al., 1970 | DH |
20.5 | 298.2 | Katayama, 1962 | T = 10 to 60°C.; DH |
19.3 | 311. | Swietoslawski and Zielenkiewicz, 1960 | Mean value 21 to 56°C.; DH |
20.6 | 323. | Hough, Mason, et al., 1950 | T = 323 to 353 K.; DH |
18.11 | 270. | Staveley and Gupta, 1949 | T = 90 to 270 K.; DH |
20.7 | 300.8 | Phillip, 1939 | DH |
19.97 | 313.15 | Fiock, Ginnings, et al., 1931 | T = 40 to 110°C.; DH |
19.1 | 292.0 | Kelley, 1929 | T = 16 to 293 K. Value is unsmoothed experimental datum.; DH |
18.7 | 270. | Mitsukuri and Hara, 1929 | T = 190 to 270 K.; DH |
19.1 | 290.1 | Parks, 1925 | T = 89 to 290 K. Value is unsmoothed experimental datum.; DH |
19.9 | 298. | von Reis, 1881 | T = 288 to 335 K.; DH |
Constant pressure heat capacity of solid
Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
16.35 | 120. | Sugisaki, Suga, et al., 1968 | glass phase; T = 20 to 120 K.; DH |
1.29 | 20.5 | Ahlberg, Blanchard, et al., 1937 | T = 5 to 28 K.; DH |
25.1 | 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, Henry's Law data, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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 |
---|---|---|---|---|---|
Tboil | 337.8 ± 0.3 | K | AVG | N/A | Average of 154 out of 171 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 176. ± 1. | K | AVG | N/A | Average of 13 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 175.5 ± 0.5 | K | AVG | N/A | Average of 8 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 513. ± 1. | K | AVG | N/A | Average of 27 out of 31 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 79. ± 1. | atm | AVG | N/A | Average of 17 out of 20 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Vc | 0.117 | l/mol | N/A | Gude and Teja, 1995 | |
Vc | 0.113024 | l/mol | N/A | Craven and de Reuck, 1986 | TRC |
Vc | 0.118 | l/mol | N/A | Francesconi, Lentz, et al., 1981 | Uncertainty assigned by TRC = 0.004 l/mol; TRC |
Vc | 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 |
ρc | 8.51 ± 0.07 | mol/l | AVG | N/A | Average of 7 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 9.0 ± 0.1 | kcal/mol | AVG | N/A | Average of 11 out of 12 values; Individual data points |
Enthalpy of vaporization
ΔvapH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
8.415 | 337.7 | N/A | Majer and Svoboda, 1985 | |
9.37 | 258. | A | Stephenson and Malanowski, 1987 | Based on data from 175. to 273. K.; AC |
8.82 | 353. | A | Stephenson and Malanowski, 1987 | Based on data from 338. to 487. K.; AC |
10.4 | 213. | A | Stephenson and Malanowski, 1987 | Based on data from 188. to 228. K.; AC |
9.30 | 275. | A | Stephenson and Malanowski, 1987 | Based on data from 224. to 290. K.; AC |
9.15 | 300. | A | Stephenson and Malanowski, 1987 | Based on data from 285. to 345. K.; AC |
8.84 | 350. | A | Stephenson and Malanowski, 1987 | Based on data from 335. to 376. K.; AC |
8.63 | 388. | A | Stephenson and Malanowski, 1987 | Based on data from 373. to 458. K.; AC |
8.39 | 468. | A | Stephenson and Malanowski, 1987 | Based on data from 453. to 513. K.; AC |
7.82 | 373. | C | Yerlett and Wormald, 1986 | AC |
6.72 | 423. | C | Yerlett and Wormald, 1986 | AC |
4.92 | 473. | C | Yerlett and Wormald, 1986 | AC |
1.8 | 510. | C | Yerlett and Wormald, 1986 | AC |
8.96 | 331. | EB | Cervenkova and Boublik, 1984 | Based on data from 316. to 336. K.; AC |
9.15 | 303. | N/A | Gibbard and Creek, 1974 | Based on data from 288. to 337. K. See also Boublik, Fried, et al., 1984.; AC |
8.41 ± 0.02 | 338. | C | Counsell and Lee, 1973 | AC |
8.51 ± 0.02 | 331. | C | Counsell and Lee, 1973 | AC |
8.65 ± 0.02 | 321. | C | Counsell and Lee, 1973 | AC |
8.84 ± 0.02 | 306. | C | Counsell and Lee, 1973 | AC |
8.77 ± 0.02 | 313. | C | Svoboda, Veselý, et al., 1973 | AC |
8.65 ± 0.02 | 323. | C | Svoboda, Veselý, et al., 1973 | AC |
8.51 ± 0.02 | 333. | C | Svoboda, Veselý, et al., 1973 | AC |
8.44 ± 0.02 | 338. | C | Svoboda, Veselý, et al., 1973 | AC |
8.29 ± 0.02 | 343. | C | Svoboda, Veselý, et al., 1973 | AC |
8.84 | 352. | N/A | Wilhoit and Zwolinski, 1973 | Based on data from 337. to 383. K.; AC |
9.25 | 290. | EB | Boublík and Aim, 1972 | Based on data from 275. to 336. K. See also Stephenson and Malanowski, 1987.; AC |
9.15 | 303. | EB | Ambrose and Sprake, 1970 | Based on data from 288. to 357. K.; AC |
8.68 | 368. | N/A | Hirata, Suda, et al., 1967 | Based on data from 353. to 483. K.; AC |
9.18 | 293. | N/A | Klyueva, Mischenko, et al., 1960 | Based on data from 278. to 323. K.; AC |
Enthalpy of vaporization
ΔvapH = A exp(-αTr)
(1 − Tr)β
ΔvapH =
Enthalpy of vaporization (at saturation pressure)
(kcal/mol)
Tr = reduced temperature (T / Tc)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | 298. to 477. |
---|---|
A (kcal/mol) | 10.8 |
α | -0.31 |
β | 0.4241 |
Tc (K) | 512.6 |
Reference | Majer and Svoboda, 1985 |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (atm)
T = temperature (K)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
353.5 to 512.63 | 5.15282 | 1569.613 | -34.846 | Ambrose, Sprake, et al., 1975 | Coefficents calculated by NIST from author's data. |
288.1 to 356.83 | 5.19838 | 1581.341 | -33.50 | Ambrose and Sprake, 1970 | Coefficents calculated by NIST from author's data. |
353. to 483. | 5.30730 | 1676.569 | -21.728 | Hirata and Suda, 1967 | Coefficents calculated by NIST from author's data. |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
0.760 | 175.3 | Domalski and Hearing, 1996 | AC |
0.5249 | 176. | Maass and Walbauer, 1925 | DH |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
2.99 | 176. | Maass and Walbauer, 1925 | DH |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
0.88 | 161.1 | Domalski and Hearing, 1996 | CAL |
4.33 | 175.3 | ||
0.96 | 157.3 | ||
4.37 | 175.6 |
Enthalpy of phase transition
ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
0.1520 | 157.34 | crystaline, II | crystaline, I | Carlson and Westrum, 1971 | DH |
0.76850 | 175.59 | crystaline, I | liquid | Carlson and Westrum, 1971 | DH |
0.3681 | 103. | crystaline | glass | Sugisaki, Suga, et al., 1968 | Glass transition.; DH |
0.170 | 157.8 | crystaline, II | crystaline, I | Staveley and Gupta, 1949 | DH |
0.7550 | 175.4 | crystaline, I | liquid | Staveley and Gupta, 1949 | DH |
0.1543 | 157.4 | crystaline, II | crystaline, I | Kelley, 1929 | DH |
0.7569 | 175.2 | crystaline, I | liquid | Kelley, 1929 | DH |
0.141 | 161.1 | crystaline, II | crystaline, I | Parks, 1925 | DH |
0.7591 | 175.3 | crystaline, I | liquid | Parks, 1925 | DH |
Entropy of phase transition
ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
0.966 | 157.34 | crystaline, II | crystaline, I | Carlson and Westrum, 1971 | DH |
4.376 | 175.59 | crystaline, I | liquid | Carlson and Westrum, 1971 | DH |
3.573 | 103. | crystaline | glass | Sugisaki, Suga, et al., 1968 | Glass; DH |
1.08 | 157.8 | crystaline, II | crystaline, I | Staveley and Gupta, 1949 | DH |
4.304 | 175.4 | crystaline, I | liquid | Staveley and Gupta, 1949 | DH |
0.980 | 157.4 | crystaline, II | crystaline, I | Kelley, 1929 | DH |
4.321 | 175.2 | crystaline, I | liquid | Kelley, 1929 | DH |
0.875 | 161.1 | crystaline, II | crystaline, I | Parks, 1925 | DH |
4.331 | 175.3 | crystaline, I | liquid | Parks, 1925 | DH |
Henry's Law data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Rolf Sander
Henry's Law constant (water solution)
kH(T) = k°H exp(d(ln(kH))/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(kH))/d(1/T) = Temperature dependence constant (K)
k°H (mol/(kg*bar)) | d(ln(kH))/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. |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Henry's Law data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias
Data compiled as indicated in comments:
B - John E. Bartmess
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to CH4O+ (ion structure unspecified)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 10.84 ± 0.01 | eV | N/A | N/A | L |
Quantity | Value | Units | Method | Reference | Comment |
Proton affinity (review) | 180.3 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 173.2 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
Appearance energy determinations
De-protonation reactions
CH3O- + =
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 382. ± 2. | kcal/mol | AVG | N/A | Average of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 376.02 ± 0.62 | kcal/mol | H-TS | Nee, Osterwalder, et al., 2006 | gas phase; B |
ΔrG° | 376.04 ± 0.55 | kcal/mol | H-TS | Osborn, Leahy, et al., 1998 | gas phase; B |
ΔrG° | 374.0 ± 2.0 | kcal/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 |
ΔrG° | 374.6 ± 2.1 | kcal/mol | H-TS | Haas and Harrison, 1993 | gas phase; Both metastable and 50 eV collision energy.; B |
ΔrG° | 375.10 ± 0.60 | kcal/mol | TDEq | Meot-ner and Sieck, 1986 | gas phase; Experimental entropy: 21.5 eu, 0.6 less than H2O; B |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Henry's Law data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Rossini, 1932
Rossini, F.D.,
The heats of combustion of methyl and ethyl alcohols,
J. Res. NBS, 1932, 8, 119-139. [all data]
Thermodynamics Research Center, 1997
Thermodynamics Research Center,
Selected Values of Properties of Chemical Compounds., Thermodynamics Research Center, Texas A&M University, College Station, Texas, 1997. [all data]
Ivash E.V., 1955
Ivash E.V.,
Thermodynamic properties of ideal gaseous methanol,
J. Chem. Phys., 1955, 23, 1814-1818. [all data]
Zhuravlev E.Z., 1959
Zhuravlev E.Z.,
Isotopic effect on thermodynamic functions of some organic deuterocompounds in the ideal gas state,
Tr. Khim. i Khim. Tekhnol., 1959, 2, 475-485. [all data]
Chen S.S., 1977
Chen S.S.,
Thermodynamic properties of normal and deuterated methanols,
J. Phys. Chem. Ref. Data, 1977, 6, 105-112. [all data]
Chao J., 1986
Chao J.,
Ideal gas thermodynamic properties of simple alkanols,
Int. J. Thermophys., 1986, 7, 431-442. [all data]
Gurvich, Veyts, et al., 1989
Gurvich, L.V.; Veyts, I.V.; Alcock, C.B.,
Thermodynamic Properties of Individual Substances, 4th ed.; Vols. 1 and 2, Hemisphere, New York, 1989. [all data]
Chao J., 1986, 2
Chao J.,
Thermodynamic properties of key organic oxygen compounds in the carbon range C1 to C4. Part 2. Ideal gas properties,
J. Phys. Chem. Ref. Data, 1986, 15, 1369-1436. [all data]
Stromsoe E., 1970
Stromsoe E.,
Heat capacity of alcohol vapors at atmospheric pressure,
J. Chem. Eng. Data, 1970, 15, 286-290. [all data]
Halford J.O., 1957
Halford J.O.,
Standard heat capacities of gaseous methanol, ethanol, methane and ethane at 279 K by thermal conductivity,
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Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Henry's Law data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy Cp,gas Constant pressure heat capacity of gas Cp,liquid Constant pressure heat capacity of liquid Cp,solid Constant pressure heat capacity of solid IE (evaluated) Recommended ionization energy Pc Critical pressure S°liquid Entropy of liquid at standard conditions S°solid,1 bar Entropy of solid at standard conditions (1 bar) Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point Ttriple Triple point temperature Vc Critical volume d(ln(kH))/d(1/T) Temperature dependence parameter for Henry's Law constant k°H Henry's Law constant at 298.15K ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔcH°gas Enthalpy of combustion of gas at standard conditions ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions ρc Critical density - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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