Methane, nitro-
- Formula: CH3NO2
- Molecular weight: 61.0400
- IUPAC Standard InChIKey: LYGJENNIWJXYER-UHFFFAOYSA-N
- CAS Registry Number: 75-52-5
- 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: Nitromethane; Nitrocarbol; CH3NO2; Nitrometan; UN 1261; NM; NSC 428
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Phase change 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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
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 | 374.1 ± 0.8 | K | AVG | N/A | Average of 17 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 244.6 | K | N/A | Toops, 1956 | Uncertainty assigned by TRC = 0.05 K; TRC |
Tfus | 244.55 | K | N/A | Timmermans, 1952 | Uncertainty assigned by TRC = 0.4 K; TRC |
Tfus | 243.11 | K | N/A | Dreisbach and Martin, 1949 | Uncertainty assigned by TRC = 0.05 K; TRC |
Tfus | 244. | K | N/A | Joukovsky, 1934 | Uncertainty assigned by TRC = 2. K; TRC |
Tfus | 243.95 | K | N/A | Timmermans, 1921 | Uncertainty assigned by TRC = 0.3 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 244.77 | K | N/A | Jones and Giauque, 1947 | Uncertainty assigned by TRC = 0.02 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tc | 588. | K | N/A | Majer and Svoboda, 1985 | |
Tc | 588. | K | N/A | Griffin, 1949 | Uncertainty assigned by TRC = 3. K; taken from a plot of total P vs 1/T; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Pc | 58.70 | bar | N/A | Ambrose, Counsell, et al., 1978 | Uncertainty assigned by TRC = 0.5865 bar; TRC |
Pc | 63.10 | bar | N/A | Griffin, 1949 | Uncertainty assigned by TRC = 1.0342 bar; from value pf vapor pressure at Tc, based on unpublished measurements; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ρc | 5.77 | mol/l | N/A | Griffin, 1949 | Uncertainty assigned by TRC = 0.05 mol/l; deduced from a series of P vs 1/T plots for various sample sizes in a fixed volume bomb; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔvapH° | 38. ± 3. | kJ/mol | AVG | N/A | Average of 7 values; Individual data points |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
33.99 | 374.4 | N/A | Majer and Svoboda, 1985 | |
38.271 | 298.15 | N/A | Jones and Giauque, 1947, 2 | P = 4.89 kPA; DH |
35.2 | 420. | A | Stephenson and Malanowski, 1987 | Based on data from 405. to 476. K. See also Berman and West, 1967.; AC |
36.8 | 343. | A | Stephenson and Malanowski, 1987 | Based on data from 328. to 410. K. See also McCullough, Scott, et al., 1954.; AC |
37.2 ± 0.1 | 318. | C | McCullough, Scott, et al., 1954 | AC |
36.3 ± 0.1 | 335. | C | McCullough, Scott, et al., 1954 | AC |
35.2 ± 0.1 | 353. | C | McCullough, Scott, et al., 1954 | AC |
34.0 ± 0.1 | 374. | C | McCullough, Scott, et al., 1954 | AC |
Enthalpy of vaporization
ΔvapH =
A exp(-βTr) (1 − Tr)β
ΔvapH =
Enthalpy of vaporization (at saturation pressure)
(kJ/mol)
Tr = reduced temperature (T / Tc)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | A (kJ/mol) | β | Tc (K) | Reference | Comment |
---|---|---|---|---|---|
318. to 374. | 53.33 | 0.2732 | 588. | Majer and Svoboda, 1985 |
Entropy of vaporization
ΔvapS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
128.36 | 298.15 | Jones and Giauque, 1947, 2 | P; DH |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
View plot Requires a JavaScript / HTML 5 canvas capable browser.
Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
405.0 to 476. | 4.1135 | 1229.574 | -76.221 | Berman and West, 1967 | Coefficents calculated by NIST from author's data. |
328.86 to 409.6 | 4.40542 | 1446.196 | -45.633 | McCullough, Scott, et al., 1954 | Coefficents calculated by NIST from author's data. |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
9.703 | 244.77 | Jones and Giauque, 1947, 2 | DH |
9.7 | 244.8 | Domalski and Hearing, 1996 | AC |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
39.64 | 244.77 | Jones and Giauque, 1947, 2 | DH |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Toops, 1956
Toops, E.E.,
Physical Properties of High Purity Nitroparaffins,
J. Phys. Chem., 1956, 60, 304-6. [all data]
Timmermans, 1952
Timmermans, J.,
Freezing points of organic compounds. VVI New determinations.,
Bull. Soc. Chim. Belg., 1952, 61, 393. [all data]
Dreisbach and Martin, 1949
Dreisbach, R.R.; Martin, R.A.,
Physical Data on Some Organic Compounds,
Ind. Eng. Chem., 1949, 41, 2875-8. [all data]
Joukovsky, 1934
Joukovsky, N.I.,
Experimental Study of the Theory of Concentrated Solutions. XI. Thermodynamic Properties of Concentrated Solutions of Aliphatic Organic Compounds Containing Nitrogen.,
Bull. Soc. Chim. Belg., 1934, 43, 397. [all data]
Timmermans, 1921
Timmermans, J.,
The Freezing Points of Organic Substances IV. New Exp. Determinations,
Bull. Soc. Chim. Belg., 1921, 30, 62. [all data]
Jones and Giauque, 1947
Jones, W.M.; Giauque, W.F.,
The Entropy of Nitromethane. Heat Capacity of Solid and Liquid. Vapor Pressure, Heats of Fusion and Vaporizaion,
J. Am. Chem. Soc., 1947, 69, 983-7. [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]
Griffin, 1949
Griffin, D.N.,
The Critical Point of Nitromethane.,
J. Am. Chem. Soc., 1949, 71, 1423. [all data]
Ambrose, Counsell, et al., 1978
Ambrose, D.; Counsell, J.F.; Hicks, C.P.,
The correlation and estimation of vapour pressures: II a new procedure for estimation and extrapolation,
J. Chem. Thermodyn., 1978, 10, 771. [all data]
Jones and Giauque, 1947, 2
Jones, W.M.; Giauque, W.F.,
The entropy of nitromethane. Heat capacity of solid and liquid. Vapor pressure, heats of fusion and vaporization,
J. Am. Chem. Soc., 1947, 69, 983-987. [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]
Berman and West, 1967
Berman, Horace A.; West, Estal Dale,
Density and vapor pressure of nitromethane 26.degree. to 200.degree.,
J. Chem. Eng. Data, 1967, 12, 2, 197-199, https://doi.org/10.1021/je60033a011
. [all data]
McCullough, Scott, et al., 1954
McCullough, J.P.; Scott, D.W.; Pennington, R.E.; Hossenlopp, I.A.; Waddington, Guy,
Nitromethane: The Vapor Heat Capacity, Heat of Vaporization, Vapor Pressure and Gas Imperfection; the Chemical Thermodynamic Properties from 0 to 1500°K.,
J. Am. Chem. Soc., 1954, 76, 19, 4791-4796, https://doi.org/10.1021/ja01648a008
. [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]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Pc Critical pressure Tboil Boiling point Tc Critical temperature Tfus Fusion (melting) point Ttriple Triple point temperature ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions ΔvapS Entropy of vaporization ρc Critical density - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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