Carbamic acid, monoammonium salt
- Formula: CH6N2O2
- Molecular weight: 78.0705
- IUPAC Standard InChI: InChI=1S/CH3NO2.H3N/c2-1(3)4;/h2H2,(H,3,4);1H3
- IUPAC Standard InChIKey: BVCZEBOGSOYJJT-UHFFFAOYSA-N
- CAS Registry Number: 1111-78-0
- Chemical structure:
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- Other names: Ammonium carbamate; Carbamic acid, ammonium salt; Ammonium carbaminate
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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
Constant pressure heat capacity of solid
| Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 131.00 | 295.5 | Clusius and Harteck, 1928 | T = 13 to 296 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:
AC - William E. Acree, Jr., James S. Chickos
Enthalpy of vaporization
| ΔvapH (kJ/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 54.1 | 262. | Stull, 1947 | Based on data from 247. to 331. K.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
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| Temperature (K) | A | B | C | Reference | Comment |
|---|---|---|---|---|---|
| 247.1 to 331.4 | 7.44698 | 2267.556 | -27.221 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
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.
Clusius and Harteck, 1928
Clusius, K.; Harteck, P.,
Über die spezifischen Wärmen einiger gester Körper bei tiefen Temperaturen,
Z. Phys. Chem., 1928, 134, 243-263. [all data]
Stull, 1947
Stull, Daniel R.,
Vapor Pressure of Pure Substances. Organic and Inorganic Compounds,
Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022
. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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