Tetramethylammonium chloride
- Formula: C4H12ClN
- Molecular weight: 109.598
- IUPAC Standard InChI: InChI=1S/C4H12N.ClH/c1-5(2,3)4;/h1-4H3;1H/q+1;/p-1
- IUPAC Standard InChIKey: OKIZCWYLBDKLSU-UHFFFAOYSA-M
- CAS Registry Number: 75-57-0
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: TMAC; Methanaminium, N,N,N-trimethyl-, chloride; Ammonium, tetramethyl-, chloride; USAF AN-8
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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 by: Eugene S. Domalski and Elizabeth D. Hearing
Enthalpy of phase transition
| ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 9.905 | 536. | crystaline, II | crystaline, I | Murrill and Breed, 1970 | |
| 0.1163 | 75.76 | crystaline | Chang and Westrum, 1962 | ||
| 0.1084 | 184.85 | crystaline, II | crystaline, I | Chang and Westrum, 1962 | Transition over range 180 to 190 K. |
Entropy of phase transition
| ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 18.4 | 536. | crystaline, II | crystaline, I | Murrill and Breed, 1970 | |
| 1.54 | 75.76 | crystaline | Chang and Westrum, 1962 | ||
| 0.59 | 184.85 | crystaline, II | crystaline, I | Chang and Westrum, 1962 | Transition |
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.
Murrill and Breed, 1970
Murrill, E.; Breed, L.,
Solid-solid phase transitions determined by differential scanning calorimetry,
Thermochim. Acta, 1970, 1, 239-246. [all data]
Chang and Westrum, 1962
Chang, S.-S.; Westrum, E.F., Jr.,
Heat capacities and thermodynamic properties of two tetramethylammonium halides,
J. Chem. Phys., 1962, 36, 2420-2423. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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