n-Hexane
- Formula: C6H14
- Molecular weight: 86.1754
- IUPAC Standard InChIKey: VLKZOEOYAKHREP-UHFFFAOYSA-N
- CAS Registry Number: 110-54-3
- 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: Hexane; Skellysolve B; n-C6H14; Esani; Heksan; Hexanen; Hexyl hydride; Gettysolve-B; NCI-C60571; NSC 68472
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), 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:
DRB - Donald R. Burgess, Jr.
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | -167.1 | kJ/mol | N/A | Good and Smith, 1969 | Value computed using ΔfHliquid° value of -198.7±0.7 kj/mol from Good and Smith, 1969 and ΔvapH° value of 31.6 kj/mol from Prosen and Rossini, 1945.; DRB |
ΔfH°gas | -167.2 ± 0.79 | kJ/mol | Ccb | Prosen and Rossini, 1945 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°gas | 388.82 ± 0.84 | J/mol*K | N/A | Scott D.W., 1974 | This reference does not contain the original experimental data. Experimental entropy value is based on the results [ Messerly J.F., 1967] for S(liquid).; GT |
Constant pressure heat capacity of gas
Cp,gas (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
110.58 | 200. | Scott D.W., 1974, 2 | Recommended values were obtained from the consistent correlation scheme for alkanes [ Scott D.W., 1974, Scott D.W., 1974, 2]. This approach gives a better agreement with experimental data than the statistical thermodynamics calculation [ Pitzer K.S., 1944, Pitzer K.S., 1946] (see also [ Waddington G., 1949]).; GT |
133.55 | 273.15 | ||
142.6 ± 0.2 | 298.15 | ||
143.26 | 300. | ||
181.54 | 400. | ||
217.28 | 500. | ||
248.11 | 600. | ||
274.05 | 700. | ||
296.23 | 800. | ||
315.06 | 900. | ||
331.37 | 1000. | ||
345.18 | 1100. | ||
357.31 | 1200. | ||
368.19 | 1300. | ||
376.56 | 1400. | ||
389.11 | 1500. |
Constant pressure heat capacity of gas
Cp,gas (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
156.27 ± 0.31 | 333.85 | Waddington G., 1947 | GT |
168.28 ± 0.34 | 365.15 | ||
181.17 ± 0.36 | 398.85 | ||
194.10 ± 0.39 | 433.70 | ||
206.94 ± 0.41 | 468.90 |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), 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
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°liquid | -198.7 ± 0.67 | kJ/mol | Ccb | Good and Smith, 1969 | ALS |
ΔfH°liquid | -198.8 ± 0.79 | kJ/mol | Ccb | Prosen and Rossini, 1945 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -4163. ± 20. | kJ/mol | AVG | N/A | Average of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
S°liquid | 296.06 | J/mol*K | N/A | Douslin and Huffman, 1946 | DH |
S°liquid | 289.5 | J/mol*K | N/A | Stull, 1937 | Extrapolation below 91 K, 54.68 J/mol*K.; DH |
S°liquid | 295.4 | J/mol*K | N/A | Huffman, Parks, et al., 1931 | Extrapolation below 90 K, 64.02 J/mol*K.; DH |
S°liquid | 297.5 | J/mol*K | N/A | Parks, Huffman, et al., 1930 | Extrapolation below 90 K, 65.44 J/mol*K.; DH |
Constant pressure heat capacity of liquid
Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
265.2 | 298.15 | Pruzan, 1991 | DH |
195.52 | 298.15 | Ohnishi, Fujihara, et al., 1989 | DH |
197.66 | 298.15 | Andreoli-Ball, Patterson, et al., 1988 | DH |
197.66 | 298.15 | Perez-Casas, Aicart, et al., 1988 | DH |
195.64 | 298.15 | Saito and Tanaka, 1988 | DH |
195.84 | 298.15 | Benson and D'Arcy, 1986 | DH |
203.0 | 308.35 | Naziev, Bashirov, et al., 1986 | T = 308.35, 333.15. p = 0.1 MPa. Unsmoothed experimental datum given as 2.356 kJ/kg*K.; DH |
197.66 | 298.15 | Tardajos, Aicart, et al., 1986 | DH |
194.96 | 298.15 | Costas and Patterson, 1985 | T = 283.15, 298.15, 313.15 K.; DH |
195.80 | 298.15 | Benson, D'Arcy, et al., 1984 | DH |
195.33 | 298.15 | Bravo, Pintos, et al., 1984 | DH |
196.1 | 297.32 | Grigor'ev and Andolenko, 1984 | T = 293 to 324 K. Unsmoothed experimental datum given as 2.276 kJ/kg*K.; DH |
195.80 | 298.15 | Aicart, Kumaran, et al., 1983 | DH |
195.80 | 298.15 | Benson, D'Arcy, et al., 1983 | DH |
195.33 | 298.15 | Wilhelm, Inglese, et al., 1982 | DH |
195.1 | 298. | Zaripov, 1982 | T = 298, 323 K.; DH |
195.76 | 298.15 | Grolier, Inglese, et al., 1981 | DH |
195.64 | 297.316 | Kalinowska, Jedlinska, et al., 1980 | T = 185 to 300 K. Unsmoothed experimental datum.; DH |
184.2 | 300. | Czarnota, 1979 | DH |
196.2 | 298. | Grigor'ev, Rastorguev, et al., 1975 | T = 300 to 463 K.; DH |
198.5 | 298.15 | Diaz pena and Renuncio, 1974 | T = 298 to 325 K.; DH |
196.10 | 299.8 | Connolly, Sage, et al., 1951 | T = 80 to 200°F.; DH |
194.97 | 298.15 | Douslin and Huffman, 1946 | T = 13 to 300 K.; DH |
186.2 | 300.7 | Phillip, 1939 | DH |
189.1 | 298.1 | Stull, 1937 | T = 90 to 320 K. Hump about 262 K with abnormal curve to 320 K.; DH |
193.3 | 293.5 | Huffman, Parks, et al., 1931 | T = 140 to 294 K. Value is unsmoothed experimental datum.; DH |
191.6 | 295.1 | Parks, Huffman, et al., 1930 | T = 90 to 295 K. Value is unsmoothed experimental datum.; DH |
194.1 | 298. | von Reis, 1881 | T = 290 to 363 K.; DH |
Phase change data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), 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
BS - Robert L. Brown and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 341.9 ± 0.3 | K | AVG | N/A | Average of 85 out of 100 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 178. ± 1. | K | AVG | N/A | Average of 32 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 178.0 ± 0.5 | K | AVG | N/A | Average of 9 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 507.6 ± 0.5 | K | AVG | N/A | Average of 39 out of 44 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 30.2 ± 0.4 | bar | AVG | N/A | Average of 24 out of 25 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Vc | 0.368 | l/mol | N/A | Ambrose and Tsonopoulos, 1995 | |
Vc | 0.371 | l/mol | N/A | Zawisza, 1985 | Uncertainty assigned by TRC = 0.007 l/mol; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 2.71 ± 0.02 | mol/l | AVG | N/A | Average of 10 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 31. ± 1. | kJ/mol | AVG | N/A | Average of 11 values; Individual data points |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
28.85 | 341.9 | N/A | Majer and Svoboda, 1985 | |
34.9 | 253. | A | Stephenson and Malanowski, 1987 | Based on data from 238. to 298. K.; AC |
35.7 | 244. | A | Stephenson and Malanowski, 1987 | Based on data from 189. to 259. K.; AC |
31.5 | 313. | A | Stephenson and Malanowski, 1987 | Based on data from 298. to 343. K.; AC |
30.1 | 356. | A | Stephenson and Malanowski, 1987 | Based on data from 341. to 377. K.; AC |
29.3 | 389. | A | Stephenson and Malanowski, 1987 | Based on data from 374. to 451. K.; AC |
29.4 | 460. | A | Stephenson and Malanowski, 1987 | Based on data from 445. to 508. K.; AC |
32.0 | 301. | A,MM | Stephenson and Malanowski, 1987 | Based on data from 286. to 343. K. See also Willingham, Taylor, et al., 1945.; AC |
26.6 | 373. | C | Wormald and Yerlett, 1985 | AC |
22.5 | 423. | C | Wormald and Yerlett, 1985 | AC |
15.7 | 473. | C | Wormald and Yerlett, 1985 | AC |
8.9 | 498. | C | Wormald and Yerlett, 1985 | AC |
30.9 | 313. | N/A | Michou-Saucet, Jose, et al., 1984 | Based on data from 298. to 338. K.; AC |
30.7 ± 0.1 | 313. | C | Majer, Svoboda, et al., 1979 | AC |
29.5 ± 0.1 | 333. | C | Majer, Svoboda, et al., 1979 | AC |
28.2 ± 0.1 | 353. | C | Majer, Svoboda, et al., 1979 | AC |
31.6 | 310. | N/A | Letcher and Marsicano, 1974 | Based on data from 300. to 321. K. See also Boublik, Fried, et al., 1984.; AC |
32.5 | 250. | N/A | Carruth and Kobayashi, 1973 | Based on data from 178. to 265. K.; AC |
30.9 ± 0.1 | 309. | C | Waddington and Douslin, 1947 | AC |
29.8 ± 0.1 | 328. | C | Waddington and Douslin, 1947 | AC |
30.5 ± 0.2 | 313. | C | Lemons and Felsing, 1943 | AC |
29.0 ± 0.2 | 333. | C | Lemons and Felsing, 1943 | AC |
28.2 ± 0.2 | 353. | C | Lemons and Felsing, 1943 | AC |
Enthalpy of vaporization
ΔvapH = A exp(-αTr)
(1 − Tr)β
ΔvapH =
Enthalpy of vaporization (at saturation pressure)
(kJ/mol)
Tr = reduced temperature (T / Tc)
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Temperature (K) | 298. to 444. |
---|---|
A (kJ/mol) | 43.85 |
α | -0.039 |
β | 0.397 |
Tc (K) | 507.4 |
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 |
---|---|---|---|---|---|
177.70 to 264.93 | 3.45604 | 1044.038 | -53.893 | Carruth and Kobayashi, 1973 | Coefficents calculated by NIST from author's data. |
286.18 to 342.69 | 4.00266 | 1171.53 | -48.784 | Williamham, Taylor, et al., 1945 |
Enthalpy of sublimation
ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
50.8 | 178. | B | Bondi, 1963 | AC |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
13.079 | 177.84 | Douslin and Huffman, 1946 | DH |
13.08 | 177.8 | Domalski and Hearing, 1996 | AC |
12.343 | 177.90 | Stull, 1937 | DH |
13.033 | 177.9 | Huffman, Parks, et al., 1931 | DH |
12.581 | 178.6 | Parks, Huffman, et al., 1930 | DH |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
73.54 | 177.84 | Douslin and Huffman, 1946 | DH |
69.38 | 177.90 | Stull, 1937 | DH |
73.3 | 177.9 | Huffman, Parks, et al., 1931 | DH |
70.44 | 178.6 | Parks, Huffman, et al., 1930 | DH |
Reaction thermochemistry data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, IR Spectrum, Mass spectrum (electron ionization), 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
MS - José A. Martinho Simões
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.
Individual Reactions
By formula: H2 + C6H12 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -125. ± 3. | kJ/mol | AVG | N/A | Average of 8 values; Individual data points |
By formula: 2H2 + C6H10 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -252. ± 2. | kJ/mol | Chyd | Fang and Rogers, 1992 | liquid phase; solvent: Cyclohexane; ALS |
ΔrH° | -253.9 ± 2.7 | kJ/mol | Chyd | Molnar, Rachford, et al., 1984 | liquid phase; solvent: Dioxane; ALS |
ΔrH° | -251.8 ± 1.5 | kJ/mol | Chyd | Turner, Mallon, et al., 1973 | liquid phase; solvent: Glacial acetic acid; ALS |
ΔrH° | -251.2 ± 0.42 | kJ/mol | Chyd | Kistiakowsky, Ruhoff, et al., 1936 | gas phase; Reanalyzed by Cox and Pilcher, 1970, Original value = -253.3 ± 0.63 kJ/mol; At 355 °K; ALS |
By formula: H2 + C6H12 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -116.1 ± 0.45 | kJ/mol | Chyd | Rogers, Crooks, et al., 1987 | liquid phase; ALS |
ΔrH° | -481.2 ± 3.5 | kJ/mol | Chyd | Rogers and Crooks, 1983 | liquid phase; solvent: Hexane; ALS |
ΔrH° | -111.3 ± 1.1 | kJ/mol | Chyd | Rogers, Papadimetriou, et al., 1975 | liquid phase; solvent: Hexane; ALS |
By formula: H2 + C6H12 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -121.6 ± 0.32 | kJ/mol | Chyd | Rogers, Crooks, et al., 1987 | liquid phase; ALS |
ΔrH° | -119.3 ± 1.2 | kJ/mol | Chyd | Rogers, Papadimetriou, et al., 1975 | liquid phase; solvent: Hexane; ALS |
ΔrH° | -119.5 ± 1.2 | kJ/mol | Chyd | Rogers and Siddiqui, 1975 | liquid phase; solvent: n-Hexane; ALS |
By formula: C6H12 + H2 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -117.9 ± 0.73 | kJ/mol | Chyd | Rogers, Crooks, et al., 1987 | liquid phase; ALS |
ΔrH° | -117.9 ± 0.82 | kJ/mol | Chyd | Rogers and Crooks, 1983 | liquid phase; solvent: Hexane; ALS |
ΔrH° | -109.8 ± 1.7 | kJ/mol | Chyd | Rogers, Papadimetriou, et al., 1975 | liquid phase; solvent: Hexane; ALS |
By formula: H2 + C6H12 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -119.5 ± 0.69 | kJ/mol | Chyd | Rogers, Crooks, et al., 1987 | liquid phase; ALS |
ΔrH° | -119.0 ± 0.78 | kJ/mol | Chyd | Rogers and Crooks, 1983 | liquid phase; solvent: Hexane; ALS |
ΔrH° | -113.2 ± 0.92 | kJ/mol | Chyd | Rogers, Papadimetriou, et al., 1975 | liquid phase; solvent: Hexane; ALS |
By formula: 3H2 + C6H8 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -339. ± 3. | kJ/mol | Chyd | Fang and Rogers, 1992 | liquid phase; solvent: Cyclohexane; ALS |
ΔrH° | -336.8 ± 1.4 | kJ/mol | Chyd | Turner, Mallon, et al., 1973 | liquid phase; solvent: Glacial acetic acid; ALS |
By formula: 3H2 + C6H8 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -335. ± 3. | kJ/mol | Chyd | Fang and Rogers, 1992 | liquid phase; solvent: Cyclohexane; ALS |
ΔrH° | -332.3 ± 0.92 | kJ/mol | Chyd | Turner, Mallon, et al., 1973 | liquid phase; solvent: Glacial acetic acid; ALS |
By formula: 4H2 + C6H6 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -582.8 ± 4.2 | kJ/mol | Chyd | Skinner and Snelson, 1959 | liquid phase; solvent: Acetic acid; Reanalyzed by Cox and Pilcher, 1970, Original value = -583.2 ± 4.2 kJ/mol; ALS |
By formula: 2H2 + C6H10 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -226. ± 1. | kJ/mol | Chyd | Fang and Rogers, 1992 | liquid phase; solvent: Cyclohexane; ALS |
By formula: 2H2 + C6H10 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -221. ± 1. | kJ/mol | Chyd | Fang and Rogers, 1992 | liquid phase; solvent: Cyclohexane; ALS |
By formula: 2H2 + C6H10 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -219. ± 2. | kJ/mol | Chyd | Fang and Rogers, 1992 | liquid phase; solvent: Cyclohexane; ALS |
By formula: 2H2 + C6H10 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -244. ± 2. | kJ/mol | Chyd | Fang and Rogers, 1992 | liquid phase; solvent: Cyclohexane; ALS |
By formula: 2H2 + C6H10 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -241. ± 2. | kJ/mol | Chyd | Fang and Rogers, 1992 | liquid phase; solvent: Cyclohexane; ALS |
By formula: 2H2 + C6H10 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -215. ± 2. | kJ/mol | Chyd | Fang and Rogers, 1992 | liquid phase; solvent: Cyclohexane; ALS |
By formula: 2H2 + C6H10 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -211. ± 2. | kJ/mol | Chyd | Fang and Rogers, 1992 | liquid phase; solvent: Cyclohexane; ALS |
By formula: 2H2 + C6H10 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -264. ± 0.8 | kJ/mol | Chyd | Roth, Kirmse, et al., 1982 | liquid phase; solvent: Isooctane; ALS |
By formula: 4H2 + C6H6 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -522. ± 2. | kJ/mol | Chyd | Roth, Hopf, et al., 1994 | liquid phase; solvent: Isooctane; ALS |
C5O5W (g) + (g) = C11H14O5W (g)
By formula: C5O5W (g) + C6H14 (g) = C11H14O5W (g)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -45. ± 13. | kJ/mol | EqG | Brown, Ishikawa, et al., 1990 | Temperature range: ca. 300-350 K; MS |
By formula: 2H2 + C6H10 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -289.4 ± 0.46 | kJ/mol | Chyd | Rogers, Dagdagan, et al., 1979 | liquid phase; solvent: Hexane; ALS |
By formula: 2H2 + C6H10 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -272.4 ± 1.2 | kJ/mol | Chyd | Rogers, Dagdagan, et al., 1979 | liquid phase; solvent: Hexane; ALS |
By formula: 2H2 + C6H10 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -275. ± 2. | kJ/mol | Chyd | Rogers, Dagdagan, et al., 1979 | liquid phase; solvent: Hexane; ALS |
By formula: C6H14 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -5.44 ± 0.88 | kJ/mol | Ciso | Prosen and Rossini, 1941 | liquid phase; Calculated from ΔHc; ALS |
By formula: C6H14 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -3.2 ± 0.79 | kJ/mol | Ciso | Prosen and Rossini, 1941 | liquid phase; Calculated from ΔHc; ALS |
By formula: C6H14 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -8.20 ± 0.84 | kJ/mol | Ciso | Prosen and Rossini, 1941 | liquid phase; Calculated from ΔHc; ALS |
By formula: C6H14 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -14.6 ± 0.75 | kJ/mol | Ciso | Prosen and Rossini, 1941 | liquid phase; Calculated from ΔHc; ALS |
By formula: 5H2 + C6H4 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -705. ± 2. | kJ/mol | Chyd | Roth, Adamczak, et al., 1991 | liquid phase; ALS |
By formula: 5H2 + C6H4 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -709. ± 2. | kJ/mol | Chyd | Roth, Adamczak, et al., 1991 | liquid phase; ALS |
3 + C6H8 =
By formula: 3H2 + C6H8 = C6H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -432. ± 1. | kJ/mol | Chyd | Roth, Adamczak, et al., 1991 | liquid phase; ALS |
IR Spectrum
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Mass spectrum (electron ionization), References, Notes
Data compiled by: Coblentz Society, Inc.
- GAS (12 mmHg, N2 ADDED, TOTAL PRESSURE 600 mmHg); BECKMAN IR-9 (GRATING); DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 2 cm-1 resolution
- LIQUID (NEAT); DOW KBr FOREPRISM-GRATING; DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 4 cm-1 resolution
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Mass spectrum (electron ionization)
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
Due to licensing restrictions, this spectrum cannot be downloaded.
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. |
---|---|
NIST MS number | 19379 |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Good and Smith, 1969
Good, W.D.; Smith, N.K.,
Enthalpies of combustion of toluene, benzene, cyclohexane, cyclohexene, methylcyclopentane, 1-methylcyclopentene, and n-hexane,
J. Chem. Eng. Data, 1969, 14, 102-106. [all data]
Prosen and Rossini, 1945
Prosen, E.J.; Rossini, F.D.,
Heats of combustion and formation of the paraffin hydrocarbons at 25° C,
J. Res. NBS, 1945, 263-267. [all data]
Scott D.W., 1974
Scott D.W.,
Correlation of the chemical thermodynamic properties of alkane hydrocarbons,
J. Chem. Phys., 1974, 60, 3144-3165. [all data]
Messerly J.F., 1967
Messerly J.F.,
Low-temperature thermal data for n-pentane, n-heptadecane, and n-octadecane. Revised thermodynamic functions for the n-alkanes, C5-C18,
J. Chem. Eng. Data, 1967, 12, 338-346. [all data]
Scott D.W., 1974, 2
Scott D.W.,
Chemical Thermodynamic Properties of Hydrocarbons and Related Substances. Properties of the Alkane Hydrocarbons, C1 through C10 in the Ideal Gas State from 0 to 1500 K. U.S. Bureau of Mines, Bulletin 666, 1974. [all data]
Pitzer K.S., 1944
Pitzer K.S.,
Thermodynamics of gaseous paraffins. Specific heat and related properties,
Ind. Eng. Chem., 1944, 36, 829-831. [all data]
Pitzer K.S., 1946
Pitzer K.S.,
The entropies and related properties of branched paraffin hydrocarbons,
Chem. Rev., 1946, 39, 435-447. [all data]
Waddington G., 1949
Waddington G.,
Experimental vapor heat capacities and heats of vaporization of 2-methylpentane, 3-methylpentane, and 2,3-dimethylbutane,
J. Am. Chem. Soc., 1949, 71, 3902-3906. [all data]
Waddington G., 1947
Waddington G.,
Experimental vapor heat capacities and heats of vaporization of n-hexane and 2,2-dimethylbutane,
J. Am. Chem. Soc., 1947, 69, 2275-2279. [all data]
Douslin and Huffman, 1946
Douslin, D.R.; Huffman, H.M.,
Low-temperature thermal data on the five isometric hexanes,
J. Am. Chem. Soc., 1946, 68, 1704-1708. [all data]
Stull, 1937
Stull, D.R.,
A semi-micro calorimeter for measuring heat capacities at low temperatures,
J. Am. Chem. Soc., 1937, 59, 2726-2733. [all data]
Huffman, Parks, et al., 1931
Huffman, H.M.; Parks, G.S.; Barmore, M.,
Thermal data on organic compounds. X. Further studies on the heat capacities, entropies and free energies of hydrocarbons,
J. Am. Chem. Soc., 1931, 53, 3876-3888. [all data]
Parks, Huffman, et al., 1930
Parks, G.S.; Huffman, H.M.; Thomas, S.B.,
Thermal data on organic compounds. VI. The heat capacities, entropies and free energies of some saturated, non-benzenoid hydrocarbons,
J. Am. Chem. Soc., 1930, 52, 1032-1041. [all data]
Pruzan, 1991
Pruzan, P.,
Thermophysical properties of liquid n-hexane at temperatures from 243 K to 473 K and at pressures to 500 MPa,
J. Chem. Thermodynam., 1991, 23, 247-259. [all data]
Ohnishi, Fujihara, et al., 1989
Ohnishi, K.; Fujihara, I.; Murakami, S.,
Thermodynamic properties of decalins mixed with hexane isomers at 298.15K. 1. Excess enthalpies and excess isobaric heat capacities,
Fluid Phase Equilib., 1989, 46, 59-72. [all data]
Andreoli-Ball, Patterson, et al., 1988
Andreoli-Ball, L.; Patterson, D.; Costas, M.; Caceres-Alonso, M.,
Heat capacity and corresponding states in alkan-1-ol-n-alkane systems, J. Chem. Soc.,
Faraday Trans. 1, 1988, 84(11), 3991-4012. [all data]
Perez-Casas, Aicart, et al., 1988
Perez-Casas, S.; Aicart, E.; Trojo, L.M.; Costas, M.,
Excess heat capacity. Chlorobenzene-2,2,4,4,6,8,8-heptamethylnonane, Int. Data Ser.,
Sel. Data Mixtures, 1988, (2)A, 123. [all data]
Saito and Tanaka, 1988
Saito, A.; Tanaka, R.,
Excess volumes and heat capacities of binary mixtures formed from cyclohexane, hexane and heptane at 298.15 K,
J. Chem. Thermodynam., 1988, 20, 859-865. [all data]
Benson and D'Arcy, 1986
Benson, G.C.; D'Arcy, P.J.,
Heat capacities of binary mixtures of n-octane with each of the hexane isomers at 298.15 K,
Can. J. Chem., 1986, 64, 2139-2141. [all data]
Naziev, Bashirov, et al., 1986
Naziev, Ya.M.; Bashirov, M.M.; Badalov, Yu.A.,
Experimental study of isobaric specific heat of higher alcohols at high pressures,
Inzh.-Fiz. Zhur., 1986, 51, 998-1004. [all data]
Tardajos, Aicart, et al., 1986
Tardajos, G.; Aicart, E.; Costas, M.; Patterson, D.,
Liquid structure and second-order mixing functions for benzene, toluene, and p-xylene with n-alkanes, J. Chem. Soc.,
Faraday Trans., 1986, 1 82, 2977-2987. [all data]
Costas and Patterson, 1985
Costas, M.; Patterson, D.,
Self-association of alcohols in inert solvents, J. Chem. Soc.,
Faraday Trans. 1, 1985, 81, 635-654. [all data]
Benson, D'Arcy, et al., 1984
Benson, G.C.; D'Arcy, P.J.; Kumaran, M.K.,
Heat capacities of binary mixtures of n-heptane with hexane isomers,
Thermochim. Acta, 1984, 75, 353-360. [all data]
Bravo, Pintos, et al., 1984
Bravo, R.; Pintos, M.; Baluja, M.C.; Paz Andrade, M.I.; Roux-Desgranges, G.; Grolier, J.-P.E.,
Excess volumes excess heat capacities of some mixtures: (an isomer of hexanol + an n-alkane) at 298.15 K,
J. Chem. Thermodynam., 1984, 16, 73-79. [all data]
Grigor'ev and Andolenko, 1984
Grigor'ev, B.A.; Andolenko, R.A.,
Investigation of the isobaric heat capacity of n-paraffinic hydrocarbons at atmospheric pressure, Izv. Vyssh. Ucheb. Zaved.,
Neft i Gaz, 1984, (2), 60-62. [all data]
Aicart, Kumaran, et al., 1983
Aicart, E.; Kumaran, M.K.; Halpin, C.J.; Benson, G.C.,
Ultrasonic speeds and isentropic compressibilities of 2-methylpentan-1-ol with hexane isomers at 298.15 K,
J. Chem. Thermodynam., 1983, 15, 1189-1197. [all data]
Benson, D'Arcy, et al., 1983
Benson, G.C.; D'Arcy, P.J.; Sugamori, M.E.,
Heat capacities of binary mixtures of 1-hexanol with hexane isomers at 298.15 K,
Thermochim. Acta, 1983, 71, 161-166. [all data]
Wilhelm, Inglese, et al., 1982
Wilhelm, E.; Inglese, A.; Quint, J.R.; Grolier, J.-P.E.,
Molar excess volumes and excess heat capacities of (1,2,4-trichlorobenzene + an alkane),
J. Chem. Thermodynam., 1982, 14, 303-308. [all data]
Zaripov, 1982
Zaripov, Z.I.,
Experimental study of the isobaric heat capacity of liquid organic compounds with molecular weights of up to 4000 a.e.m., 1982, Teplomassoobmen Teplofiz. [all data]
Grolier, Inglese, et al., 1981
Grolier, J.P.E.; Inglese, A.; Roux, A.H.; Wilhelm, E.,
Thermodynamics of (1-chloronaphthalene + n-alkane): excess enthalpies, excess volumes and excess heat capacities,
Ber. Bunsenges. Phys. Chem., 1981, 85, 768-772. [all data]
Kalinowska, Jedlinska, et al., 1980
Kalinowska, B.; Jedlinska, J.; Woycicki, W.; Stecki, J.,
Heat capacities of liquids at temperatures between 90 and 300 K and at atmospheric pressure. I. Method and apparatus, and the heat capacities of n-heptane, n-hexane, and n-propanol,
J. Chem. Thermodynam., 1980, 12, 891-896. [all data]
Czarnota, 1979
Czarnota, I.,
Calorimetric system for measurement of specific heat capacity of liquids, Cp, at high pressures, Bull. Acad. Pol. Sci.,
Ser. Sci. Chim., 1979, 10, 763-772. [all data]
Grigor'ev, Rastorguev, et al., 1975
Grigor'ev, B.A.; Rastorguev, Yu.L.; Yanin, G.S.,
Experimental determination of the isobaric specific heat of n-alkanes,
Iz. Vyssh. Uchebn. Zaved. Neft Gaz 18, 1975, No.10, 63-66. [all data]
Diaz pena and Renuncio, 1974
Diaz pena, M.D.; Renuncio, J.A.R.,
Construccion de un calorimetro adiabatico. Capacidad calorifica de mezclas n-hexano + n-hexadecano,
An. Quim., 1974, 70, 113-120. [all data]
Connolly, Sage, et al., 1951
Connolly, T.J.; Sage, B.H.; Lacey, W.N.,
Isobaric heat capacities at bubble point. n-Hexane, methylcyclopentane, and n-octane,
Ind. Eng. Chem., 1951, 43, 946-950. [all data]
Phillip, 1939
Phillip, N.M.,
Adiabatic and isothermal compressibilities of liquids,
Proc. Indian Acad. Sci., 1939, A9, 109-120. [all data]
von Reis, 1881
von Reis, M.A.,
Die specifische Wärme flüssiger organischer Verbindungen und ihre Beziehung zu deren Moleculargewicht,
Ann. Physik [3], 1881, 13, 447-464. [all data]
Ambrose and Tsonopoulos, 1995
Ambrose, D.; Tsonopoulos, C.,
Vapor-Liquid Critical Properties of Elements and Compounds. 2. Normal Alkenes,
J. Chem. Eng. Data, 1995, 40, 531-546. [all data]
Zawisza, 1985
Zawisza, A.,
High-pressure liquid-vapour equilibria, critical state, and p(Vm,T,x) to 44 8.15 K and 4.053 MPa for {xC6H14 + (1-x)CH3OH}.,
J. Chem. Thermodyn., 1985, 17, 941-947. [all data]
Majer and Svoboda, 1985
Majer, V.; Svoboda, V.,
Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300. [all data]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2
. [all data]
Willingham, Taylor, et al., 1945
Willingham, C.B.; Taylor, W.J.; Pignocco, J.M.; Rossini, F.D.,
Vapor pressures and boiling points of some paraffin, alkylcyclopentane, alkylcyclohexane, and alkylbenzene hydrocarbons,
J. RES. NATL. BUR. STAN., 1945, 35, 3, 219-17, https://doi.org/10.6028/jres.035.009
. [all data]
Wormald and Yerlett, 1985
Wormald, C.J.; Yerlett, T.K.,
A new enthalpy-increment calorimeter enthalpy increments for n-hexane,
The Journal of Chemical Thermodynamics, 1985, 17, 12, 1171-1186, https://doi.org/10.1016/0021-9614(85)90044-8
. [all data]
Michou-Saucet, Jose, et al., 1984
Michou-Saucet, Marie-Annie; Jose, Jacques; Michou-Saucet, Christian; Merlin, J.C.,
Pressions de vapeur et enthalpies libres d'exces de systemes binaires: Hexamethylphosphorotriamide (HMPT) + n-hexane; n-heptane; n-octane: A 298,15 K; 303,15 K; 313,15 K; 323,15 K; 333,15 K,
Thermochimica Acta, 1984, 75, 1-2, 85-106, https://doi.org/10.1016/0040-6031(84)85009-1
. [all data]
Majer, Svoboda, et al., 1979
Majer, Vladimír; Svoboda, Václav; Hála, Slavoj; Pick, Jirí,
Temperature dependence of heats of vaporization of saturated hydrocarbons C5-C8; Experimental data and an estimation method,
Collect. Czech. Chem. Commun., 1979, 44, 3, 637-651, https://doi.org/10.1135/cccc19790637
. [all data]
Letcher and Marsicano, 1974
Letcher, T.M.; Marsicano, F.,
Vapour pressures and densities of some unsaturated C6 acyclic and cyclic hydrocarbons between 300 and 320 K,
The Journal of Chemical Thermodynamics, 1974, 6, 5, 509-514, https://doi.org/10.1016/0021-9614(74)90013-5
. [all data]
Boublik, Fried, et al., 1984
Boublik, T.; Fried, V.; Hala, E.,
The Vapour Pressures of Pure Substances: Selected Values of the Temperature Dependence of the Vapour Pressures of Some Pure Substances in the Normal and Low Pressure Region, 2nd ed., Elsevier, New York, 1984, 972. [all data]
Carruth and Kobayashi, 1973
Carruth, Grant F.; Kobayashi, Riki,
Vapor pressure of normal paraffins ethane through n-decane from their triple points to about 10 mm mercury,
J. Chem. Eng. Data, 1973, 18, 2, 115-126, https://doi.org/10.1021/je60057a009
. [all data]
Waddington and Douslin, 1947
Waddington, Guy; Douslin, Donald R.,
Experimental Vapor Heat Capacities and Heats of Vaporization of n-Hexane and 2,2-Dimethylbutane 1,
J. Am. Chem. Soc., 1947, 69, 10, 2275-2279, https://doi.org/10.1021/ja01202a011
. [all data]
Lemons and Felsing, 1943
Lemons, Joe Fred; Felsing, W.A.,
The Heats of Vaporization of Some Hexanes 1,
J. Am. Chem. Soc., 1943, 65, 1, 46-48, https://doi.org/10.1021/ja01241a015
. [all data]
Williamham, Taylor, et al., 1945
Williamham, C.B.; Taylor, W.J.; Pignocco, J.M.; Rossini, F.D.,
Vapor Pressures and Boiling Points of Some Paraffin, Alkylcyclopentane, Alkylcyclohexane, and Alkylbenzene Hydrocarbons,
J. Res. Natl. Bur. Stand. (U.S.), 1945, 35, 3, 219-244, https://doi.org/10.6028/jres.035.009
. [all data]
Bondi, 1963
Bondi, A.,
Heat of Siblimation of Molecular Crystals: A Catalog of Molecular Structure Increments.,
J. Chem. Eng. Data, 1963, 8, 3, 371-381, https://doi.org/10.1021/je60018a027
. [all data]
Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985
. [all data]
Fang and Rogers, 1992
Fang, W.; Rogers, D.W.,
Enthalpy of hydrogenation of the hexadienes and cis- and trans-1,3,5-hexatriene,
J. Org. Chem., 1992, 57, 2294-2297. [all data]
Molnar, Rachford, et al., 1984
Molnar, A.; Rachford, R.; Smith, G.V.; Liu, R.,
Heats of hydrogenation by a simple and rapid flow calorimetric method,
Appl. Catal., 1984, 9, 219-223. [all data]
Turner, Mallon, et al., 1973
Turner, R.B.; Mallon, B.J.; Tichy, M.; Doering, W.v.E.; Roth, W.R.; Schroder, G.,
Heats of hydrogenation. X. Conjugative interaction in cyclic dienes and trienes,
J. Am. Chem. Soc., 1973, 95, 8605-8610. [all data]
Kistiakowsky, Ruhoff, et al., 1936
Kistiakowsky, G.B.; Ruhoff, J.R.; Smith, H.A.; Vaughan, W.E.,
Heats of organic reactions. IV. Hydrogenation of some dienes and of benzene,
J. Am. Chem. Soc., 1936, 58, 146-153. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Rogers, Crooks, et al., 1987
Rogers, D.W.; Crooks, E.; Dejroongruang, K.,
Enthalpies of hydrogenation of the hexenes,
J. Chem. Thermodyn., 1987, 19, 1209-1215. [all data]
Rogers and Crooks, 1983
Rogers, D.W.; Crooks, E.L.,
Enthalpies of hydrogenation of the isomers of n-hexene,
J. Chem. Thermodyn., 1983, 15, 1087-1092. [all data]
Rogers, Papadimetriou, et al., 1975
Rogers, D.W.; Papadimetriou, P.M.; Siddiqui, N.A.,
An improved hydrogen microcalorimeter for use with large molecules,
Mikrochim. Acta, 1975, 2, 389-400. [all data]
Rogers and Siddiqui, 1975
Rogers, D.W.; Siddiqui, N.A.,
Heats of hydrogenation of large molecules. I. Esters of unsaturated fatty acids,
J. Phys. Chem., 1975, 79, 574-577. [all data]
Skinner and Snelson, 1959
Skinner, H.A.; Snelson, A.,
Heats of hydrogenation Part 3.,
Trans. Faraday Soc., 1959, 55, 405-407. [all data]
Roth, Kirmse, et al., 1982
Roth, W.R.; Kirmse, W.; Hoffmann, W.; Lennartz, H.W.,
Heats of hydrogenation. III. Effect of fluoro substituents on the thermal rearrangement of cyclopropane systems,
Chem. Ber., 1982, 115, 2508-2515. [all data]
Roth, Hopf, et al., 1994
Roth, W.R.; Hopf, H.; Horn, C.,
Propargyl-Stabilisierungsenergie,
Chem. Ber., 1994, 127, 1781-1795. [all data]
Brown, Ishikawa, et al., 1990
Brown, C.E.; Ishikawa, Y.; Hackett, P.A.; Rayner, D.M.,
J. Am. Chem. Soc., 1990, 112, 2530. [all data]
Rogers, Dagdagan, et al., 1979
Rogers, D.W.; Dagdagan, O.A.; Allinger, N.L.,
Heats of hydrogenation and formation of linear alkynes and a molecular mechanics interpretation,
J. Am. Chem. Soc., 1979, 101, 671-676. [all data]
Prosen and Rossini, 1941
Prosen, E.J.R.; Rossini, F.D.,
Heats of isomerization of the five hexanes,
J. Res. NBS, 1941, 27, 289-310. [all data]
Roth, Adamczak, et al., 1991
Roth, W.R.; Adamczak, O.; Breuckmann, R.; Lennartz, H.-W.; Boese, R.,
Die Berechnung von Resonanzenergien; das MM2ERW-Kraftfeld,
Chem. Ber., 1991, 124, 2499-2521. [all data]
Notes
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- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas Cp,liquid Constant pressure heat capacity of liquid Pc Critical pressure S°gas Entropy of gas at standard conditions S°liquid Entropy of liquid at standard conditions Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point Ttriple Triple point temperature Vc Critical volume 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 ΔrH° Enthalpy of reaction at standard conditions ΔsubH Enthalpy of sublimation 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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