Butane
- Formula: C4H10
- Molecular weight: 58.1222
- IUPAC Standard InChI: InChI=1S/C4H10/c1-3-4-2/h3-4H2,1-2H3
- IUPAC Standard InChIKey: IJDNQMDRQITEOD-UHFFFAOYSA-N
- CAS Registry Number: 106-97-8
- 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. - Other names: n-Butane; Diethyl; Freon 600; Liquefied petroleum gas; LPG; n-C4H10; Butanen; Butani; Methylethylmethane; UN 1011; A 21; HC 600; HC 600 (hydrocarbon); R 600; R 600 (alkane)
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Gas phase thermochemistry data
Go To: Top, 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
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -30.03 ± 0.16 | kcal/mol | Ccb | Pittam and Pilcher, 1972 | ALS |
| ΔfH°gas | -30.37 ± 0.16 | kcal/mol | Cm | Prosen, Maron, et al., 1951 | see Prosen and Rossini, 1945; ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°gas | -687.75 ± 0.15 | kcal/mol | Ccb | Pittam and Pilcher, 1972 | Corresponding ΔfHºgas = -30.03 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
| ΔcH°gas | -687.42 ± 0.15 | kcal/mol | Cm | Prosen, Maron, et al., 1951 | see Prosen and Rossini, 1945; Corresponding ΔfHºgas = -30.36 kcal/mol (simple calculation by NIST; no Washburn corrections); ALS |
| ΔcH°gas | -687.94 ± 0.15 | kcal/mol | Ccb | Rossini, 1934 | Corresponding ΔfHºgas = -29.84 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 |
|---|---|---|---|
| 9.099 | 50. | Chen S.S., 1975 | Recommended values are in good agreement with those calculated by [ Pitzer K.S., 1944, Pitzer K.S., 1946].; GT |
| 13.23 | 100. | ||
| 16.09 | 150. | ||
| 18.27 | 200. | ||
| 22.06 | 273.15 | ||
| 23.54 | 298.15 | ||
| 23.65 | 300. | ||
| 29.821 | 400. | ||
| 35.531 | 500. | ||
| 40.459 | 600. | ||
| 44.699 | 700. | ||
| 48.370 | 800. | ||
| 51.561 | 900. | ||
| 54.340 | 1000. | ||
| 56.759 | 1100. | ||
| 58.860 | 1200. | ||
| 60.691 | 1300. | ||
| 62.280 | 1400. | ||
| 63.671 | 1500. |
Constant pressure heat capacity of gas
| Cp,gas (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 26.429 | 344.9 | Dailey B.P., 1943 | Other experimental values of heat capacity [ Sage B.H., 1937] are believed to be less reliable, see [ Chen S.S., 1975].; GT |
| 27.469 | 359.6 | ||
| 29.099 | 387.5 | ||
| 32.980 | 451.6 | ||
| 36.809 | 521.0 | ||
| 38.781 | 561.3 | ||
| 40.710 | 600.8 | ||
| 44.419 | 692.6 |
References
Go To: Top, Gas phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Pittam and Pilcher, 1972
Pittam, D.A.; Pilcher, G.,
Measurements of heats of combustion by flame calorimetry. Part 8.-Methane, ethane, propane, n-butane and 2-methylpropane,
J. Chem. Soc. Faraday Trans. 1, 1972, 68, 2224-2229. [all data]
Prosen, Maron, et al., 1951
Prosen, E.J.; Maron, F.W.; Rossini, F.D.,
Heats of combustion, formation, and insomerization of ten C4 hydrocarbons,
J. Res. NBS, 1951, 46, 106-112. [all data]
Prosen and Rossini, 1945
Prosen, E.J.; Rossini, F.D.,
Heats of formation and combustion of 1,3-butadiene and styrene,
J. Res. NBS, 1945, 34, 59-63. [all data]
Rossini, 1934
Rossini, F.D.,
Calorimetric determination of the heats of combustion of ethane, propane, normal butane, and normal pentane,
J. Res. NBS, 1934, 12, 735-750. [all data]
Chen S.S., 1975
Chen S.S.,
Ideal gas thermodynamic properties and isomerization of n-butane and isobutane,
J. Phys. Chem. Ref. Data, 1975, 4, 859-869. [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]
Dailey B.P., 1943
Dailey B.P.,
Heat capacities and hindered rotation in n-butane and isobutane,
J. Am. Chem. Soc., 1943, 65, 44-46. [all data]
Sage B.H., 1937
Sage B.H.,
Phase equilibria in hydrocarbon systems. XX. Isobaric heat capacity of gaseous propane, n-butane, isobutane, and n-pentane,
Ind. Eng. Chem., 1937, 29, 1309-1314. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, References
- Symbols used in this document:
Cp,gas Constant pressure heat capacity of gas ΔcH°gas Enthalpy of combustion of gas at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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