Hydrazine, methyl-
- Formula: CH6N2
- Molecular weight: 46.0717
- IUPAC Standard InChIKey: HDZGCSFEDULWCS-UHFFFAOYSA-N
- CAS Registry Number: 60-34-4
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Methylhydrazine; Monomethylhydrazine; MMH; CH3NHNH2; Hydrazomethane; 1-Methylhydrazine; Metylohydrazyna; Rcra waste number P068; UN 1244
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Gas phase thermochemistry data
Go To: Top, Condensed phase 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: Donald R. Burgess, Jr.
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 22.6 | kcal/mol | N/A | Cole and Gilbert, 1951 | Value computed using ΔfHliquid° value of 54.14 kj/mol from Cole and Gilbert, 1951 and ΔvapH° value of 40.37 kj/mol from missing citation. |
Condensed phase thermochemistry data
Go To: Top, Gas phase 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
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°liquid | 12.94 | kcal/mol | Cm | Cole and Gilbert, 1951 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°liquid | -311.95 ± 0.14 | kcal/mol | Ccb | Aston, Rock, et al., 1952 | Reanalyzed by Cox and Pilcher, 1970, Original value = -311.71 ± 0.14 kcal/mol; ALS |
ΔcH°liquid | -311.94 | kcal/mol | Cm | Cole and Gilbert, 1951 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°liquid | 39.661 | cal/mol*K | N/A | Aston, Fink, et al., 1951 | DH |
Constant pressure heat capacity of liquid
Cp,liquid (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
32.249 | 298.15 | Aston, Fink, et al., 1951 | T = 15 to 298 K.; DH |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Cole and Gilbert, 1951
Cole, L.G.; Gilbert, E.C.,
The heats of combustion of some nitrogen compounds and the apparent energy of the N-N bond,
J. Am. Chem. Soc., 1951, 73, 5423-5427. [all data]
Aston, Rock, et al., 1952
Aston, J.G.; Rock, E.J.; Isserow, S.,
The heats of combustion of the methyl substituted hydrazines and some observations on the burning of volatile liquids,
J. Am. Chem. Soc., 1952, 74, 2484-24. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]
Aston, Fink, et al., 1951
Aston, J.G.; Fink, H.L.; Janz, G.J.; Russell, K.E.,
The heat capacity, heats of fusion and vaporization, vapor pressures, entropy and thermodynamic functions of methyl hydrazine,
J. Am. Chem. Soc., 1951, 73, 1939-1943. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°liquid Entropy of liquid at standard conditions ΔcH°liquid Enthalpy of combustion of liquid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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