Methyl nitrate
- Formula: CH3NO3
- Molecular weight: 77.0394
- IUPAC Standard InChI: InChI=1S/CH3NO3/c1-5-2(3)4/h1H3
- IUPAC Standard InChIKey: LRMHVVPPGGOAJQ-UHFFFAOYSA-N
- CAS Registry Number: 598-58-3
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
View 3d structure (requires JavaScript / HTML 5) - Other names: Nitric acid, methyl ester; CH3ONO2; Methylester kyseliny dusicne
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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 by: Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| S°liquid | 216.98 | J/mol*K | N/A | Gray and Smith, 1953 |
Constant pressure heat capacity of liquid
| Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 157.19 | 298.2 | Gray and Smith, 1953 | T = 13 to 295 K. |
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 as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tboil | 338.0 | K | N/A | Lecat, 1947 | Uncertainty assigned by TRC = 0.5 K; TRC |
| Tboil | 338.15 | K | N/A | Rogowski, 1942 | Uncertainty assigned by TRC = 1.5 K; TRC |
| Tboil | 338.15 | K | N/A | Perkin, 1889 | Uncertainty assigned by TRC = 1.5 K; TRC |
| Quantity | Value | Units | Method | Reference | Comment |
| Ttriple | 190.2 | K | N/A | Gray and Smith, 1953, 2 | Uncertainty assigned by TRC = 0.1 K; TRC |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔvapH° | 34.10 | kJ/mol | V | Gray and Pratt, 1957 | ALS |
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 34.8 | 288. | A | Stephenson and Malanowski, 1987 | Based on data from 273. to 303. K.; AC |
Enthalpy of fusion
| ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 8.242 | 190.2 | Gray and Smith, 1953 | DH |
| 8.24 | 190.2 | Domalski and Hearing, 1996 | AC |
Entropy of fusion
| ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 43.33 | 190.2 | Gray and Smith, 1953 | DH |
Reaction 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
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
0.76 + 0.62
+
=
+
By formula: 0.76NO2 + 0.62N2O4 + CH3NO3 = N2O5 + CH3NO2
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 36.24 | kJ/mol | Cm | Ray and Ogg, 1959 | liquid phase |
+
=
+
By formula: CH4O + HNO3 = CH3NO3 + H2O
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -27.6 | kJ/mol | Eqk | Rubtsov, 1986 | liquid phase |
Gas Chromatography
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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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Van Den Dool and Kratz RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | DB-1 | 525. | Helmig, Pollock, et al., 1996 | 30. m/0.25 mm/1. μm, 6. K/min; Tstart: -50. C; Tend: 180. C |
| Capillary | DB-5 | 548. | Helmig, Pollock, et al., 1996 | 60. m/0.33 mm/0.25 μm, 6. K/min; Tstart: -50. C; Tend: 180. C |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas Chromatography, NIST Free Links, NIST Subscription Links, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Gray and Smith, 1953
Gray, P.; Smith, P.L.,
The thermodynamic properties of methyl nitrate,
J. Chem. Soc., 1953, 1953, 2380-2385. [all data]
Lecat, 1947
Lecat, M.,
Orthobaric Azeotropes of Sulfides,
Bull. Cl. Sci., Acad. R. Belg., 1947, 33, 160-82. [all data]
Rogowski, 1942
Rogowski, F.,
Molecular Structure of Nitromethane, Methyl Nitrite and Methyl Nitrate in the Gas State by Electron Diffraction,
Chem. Ber., 1942, 75, 244. [all data]
Perkin, 1889
Perkin, W.H.,
The Magneto Rotatory Power of Nitrogne Compounds. also of Hydrochloric Hydrobromic and Hydroioidic Acids and of some of the Salts of Ammonia and the Compound Ammonias,
J. Chem. Soc., 1889, 55, 680. [all data]
Gray and Smith, 1953, 2
Gray, P.; Smith, P.L.,
The thermodynamic properties of methyl nitrate,
J. Chem. Soc., 1953, 1953, 2380-85. [all data]
Gray and Pratt, 1957
Gray, P.; Pratt, M.W.T.,
The latent heats of vaporization of the alkyl nitrates,
J. Chem. Soc., 1957, 2163-21. [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]
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]
Ray and Ogg, 1959
Ray, J.D.; Ogg, R.A., Jr.,
The heat of formation of methyl nitrate,
J. Phys. Chem., 1959, 63, 1522-1523. [all data]
Rubtsov, 1986
Rubtsov, Yu.I.,
Thermodynamic calculation of equilibrium in nitration of alcohols,
Bull. Acad. Sci. USSR, Div. Chem. Sci., 1986, 19-22. [all data]
Helmig, Pollock, et al., 1996
Helmig, D.; Pollock, W.; Greenberg, J.; Zimmerman, P.,
Gas chromatography mass spectrometry analysis of volatile organic trace gases at Mauna Loa Observatory, Hawaii,
J. Geophys. Res., 1996, 101, D9, 14697-14710, https://doi.org/10.1029/96JD00212
. [all data]
Notes
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- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions Tboil Boiling point Ttriple Triple point temperature ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔrH° Enthalpy of reaction at standard conditions ΔvapH Enthalpy of vaporization ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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