Graphite
- Formula: C
- Molecular weight: 12.0107
- IUPAC Standard InChI: InChI=1S/C
- IUPAC Standard InChIKey: OKTJSMMVPCPJKN-UHFFFAOYSA-N
- CAS Registry Number: 7782-42-5
- Chemical structure:
This structure is also available as a 2d Mol file - Species with the same structure:
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Condensed phase thermochemistry data
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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:
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| S°solid,1 bar | 1.4 ± 0.1 | cal/mol*K | AVG | N/A | Average of 10 values; Individual data points |
Constant pressure heat capacity of solid
| Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 1.97 | 298. | Yin, Ziru, et al., 1991 | T = 300 to 420 K. Cp value reported at 298 K is 0.685 J/kg*K.; DH |
| 2.402 | 300. | Isaacs and Wang, 1981 | T = 80 to 300 K. Cp = 8.729x10-4T + 6.27x10-6T2 + 6.309x10-9T3 J/g*K. Value calculated from equation.; DH |
| 2.01 | 300. | Taylor and Groot, 1980 | T = 300 to 2400 K.; DH |
| 2.0599 | 300. | Butland and Maddison, 1973 | T = 200 to 3500 K. Least squares fit of 'best' data gives: Cp = 0.538657 + 9.11129x10-6T - 90.2725T-1 - 43449.3T-2 + 1.59309x107T3 - 1.43688x109T-4 cal/g*K (250 to 3000 K).; DH |
| 1.94 | 298.15 | Markelov, Volga, et al., 1973 | T = 1 to 3000 K. Cp = 0.6752 J/g*K.; DH |
| 1.94 | 298. | Sheindlin, Belevich, et al., 1972 | T = 273 to 3650 K. Cp calculated from equation applicable to the temperature range 273 to 1000 K.; DH |
| 2.146 | 298.15 | Lutcov, Volga, et al., 1970 | T = 57 to 320 K.; DH |
| 2.025 | 298.15 | Lutcov, Volga, et al., 1970 | T = 52 to 315 K.; DH |
| 1.925 | 298.15 | Lutcov, Volga, et al., 1970 | T = 51 to 311 K.; DH |
| 1.925 | 298.15 | Lutcov, Volga, et al., 1970 | T = 51 to 311 K.; DH |
| 2.05 | 300. | McDonald, 1965 | T = 298 to 1723 K.; DH |
| 2.136 | 298.15 | DeSorbo and Tyler, 1957 | T = 13 to 300 K.; DH |
| 1.874 | 298.15 | DeSorbo, 1955 | T = 17 to 300 K.; DH |
| 2.038 | 298.15 | DeSorbo and Tyler, 1953 | T = 13 to 300 K.; DH |
| 2.031 | 293.5 | Jacobs and Parks, 1934 | T = 93 to 294 K. Value is unsmoothed experimental datum.; DH |
Phase change data
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Ttriple | 5000. | K | N/A | Marshall and McKellar, 1986 | Uncertainty assigned by TRC = 300. K |
| Quantity | Value | Units | Method | Reference | Comment |
| Ptriple | 100.67 | atm | N/A | Marshall and McKellar, 1986 | Uncertainty assigned by TRC = 14.80 atm |
References
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Yin, Ziru, et al., 1991
Yin, C.; Ziru, L.; Ganghe, W.; Chengyun, W., et al.,
Determination of heat capacity of explosives and related materials by DSC,
Proc. Int. Pyrotech. Semin. 17th(Vol. 1), 1991, 515-521. [all data]
Isaacs and Wang, 1981
Isaacs, L.L.; Wang, W.Y.,
Thermal properties of POCO process graphite,
Therm. Conduct. 17th, 1981, 55-61. [all data]
Taylor and Groot, 1980
Taylor, R.E.; Groot, H.,
Thermophysical properties of POCO graphite,
High Temp.-High Press., 1980, 12, 147-160. [all data]
Butland and Maddison, 1973
Butland, A.T.D.; Maddison, R.J.,
The specific heat of graphite: an evaluation of measurements,
J. Nucl. Mater., 1973, 49, 45-56. [all data]
Markelov, Volga, et al., 1973
Markelov, N.V.; Volga, V.I.; Buchnev, L.M.,
Thermodynamic functions of single-crystal graphite in the temperature range 0-3000°K,
Zhur. Fiz. Khim., 1973, 7, 1824-1827. [all data]
Sheindlin, Belevich, et al., 1972
Sheindlin, A.E.; Belevich, I.S.; Kozhevnikov, I.G.,
Enthalpy and specific heat of graphite in the temperature range 273-3650°K,
Teplofiz. Vys. Temp., 1972, 10, 997-1001. [all data]
Lutcov, Volga, et al., 1970
Lutcov, A.I.; Volga, V.I.; Dymov, B.K.,
Thermal conductivity, electric resistivity and specific heat of dense graphites,
Carbon, 1970, 8, 753-760. [all data]
McDonald, 1965
McDonald, R.A.,
Heat content and heat capacity of an extruded graphite from 341° to 1723°K,
J. Chem. Eng. Data, 1965, 10, 243. [all data]
DeSorbo and Tyler, 1957
DeSorbo, W.; Tyler, W.W.,
Effect of irradiation on the low-temperature specific heat of graphite,
J. Chem. Phys., 1957, 26, 244-247. [all data]
DeSorbo, 1955
DeSorbo, W.,
Low temperature heat capacity of Ceylon graphite,
J. Am. Chem. Soc., 1955, 77, 4713-4715. [all data]
DeSorbo and Tyler, 1953
DeSorbo, W.; Tyler, W.W.,
The specific heat of graphite from 13 to 300°K,
J. Chem. Phys., 1953, 21, 1660-1663. [all data]
Jacobs and Parks, 1934
Jacobs, C.J.; Parks, G.S.,
Thermal data on organic compounds. XIV. Some heat capacity, entropy and free energy data for cyclic substances,
J. Am. Chem. Soc., 1934, 56, 1513-1517. [all data]
Marshall and McKellar, 1986
Marshall, M.D.; McKellar, A.R.W.,
The ν2 fundamental band of triplet CH2,
J. Chem. Phys., 1986, 85, 7, 3716, https://doi.org/10.1063/1.450943
. [all data]
Notes
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- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid Ptriple Triple point pressure S°solid,1 bar Entropy of solid at standard conditions (1 bar) Ttriple Triple point temperature - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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