Methyl nitrite
- Formula: CH3NO2
- Molecular weight: 61.0400
- IUPAC Standard InChI: InChI=1S/CH3NO2/c1-4-2-3/h1H3
- IUPAC Standard InChIKey: BLLFVUPNHCTMSV-UHFFFAOYSA-N
- CAS Registry Number: 624-91-9
- 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: Nitrous acid, methyl ester; CH3ONO; Methylester kyseliny dusite; Methyl ester of nitrous acid
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Condensed phase thermochemistry data
Go To: Top, Phase change data, Reaction thermochemistry data, 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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | -67.15 ± 0.84 | kJ/mol | Eqk | Silverwood and Thomas, 1967 | |
| ΔfH°liquid | -85.1 ± 1.0 | kJ/mol | Cm | Gray and Pratt, 1958 | Measured by Baldrey, Lotzgesell and Style |
Phase change data
Go To: Top, Condensed phase thermochemistry data, Reaction thermochemistry data, 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
AC - William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔvapH° | 22.6 ± 0.2 | kJ/mol | V | Gray and Pratt, 1958 | Measured by Baldrey, Lotzgesell and Style; ALS |
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 22.1 | 258. | A | Stephenson and Malanowski, 1987 | Based on data from 218. to 273. K.; AC |
| 26.2 | 190. | N/A | Rook, 1982 | Based on data from 154. to 225. K.; AC |
Reaction thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, 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: 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: CH3NO2 + HCl = ClNO + CH4O
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 8.95 ± 0.84 | kJ/mol | Eqk | Ray and Gershon, 1962 | gas phase |
+
= 2
+
By formula: CH3NO2 + HNO3 = 2NO2 + CH4O
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 66.48 | kJ/mol | Eqk | Silverwood and Thomas, 1967 | gas phase |
References
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Silverwood and Thomas, 1967
Silverwood, R.; Thomas, J.H.,
Reaction between methanol and nitrogen dioxide. Part 1.-Low-temperature reaction and the thermodynamic constants of methyl nitrite,
J. Chem. Soc. Faraday Trans., 1967, 63, 2476-2479. [all data]
Gray and Pratt, 1958
Gray, P.; Pratt, M.W.T.,
687. The thermodynamic functions of methyl nitrite and the potential barrier to free rotation.,
J. Chem. Soc., 1958, 3403-3412. [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]
Rook, 1982
Rook, Frederick L.,
Preparation, vapor pressure, and infrared spectrum of methyl nitrite,
J. Chem. Eng. Data, 1982, 27, 1, 72-73, https://doi.org/10.1021/je00027a022
. [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]
Ray and Gershon, 1962
Ray, J.D.; Gershon, A.A.,
The heat of formation of gaseous methyl nitrite,
J. Phys. Chem., 1962, 66, 1750-1752. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, References
- Symbols used in this document:
ΔfH°liquid Enthalpy of formation of liquid at standard conditions 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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