Betaine calcium chloride dihydrate
- Formula: C5H11CaCl2NO2·H4O2
- Molecular weight: 264.161
- CAS Registry Number: 90268-02-3
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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 (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 71.7 | 300. | Brill, Gmelin, et al., 1990 | T = 2 to 300 K. Cp value estimated graphically. |
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 (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 0.00121 | 47. | crystaline, VI | crystaline, V | Brill, Gmelin, et al., 1990 | |
| 0.002845 | 76. | crystaline, V | crystaline, IV | Brill, Gmelin, et al., 1990 | |
| 0.00134 | 116. | crystaline, IV | crystaline, III | Brill, Gmelin, et al., 1990 | |
| 0.000378 | 127. | crystaline, III | crystaline, II | Brill, Gmelin, et al., 1990 | |
| 0.04479 | 164. | crystaline, II | crystaline, I | Brill, Gmelin, et al., 1990 |
Entropy of phase transition
| ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 0.026 | 47. | crystaline, VI | crystaline, V | Brill, Gmelin, et al., 1990 | |
| 0.038 | 76. | crystaline, V | crystaline, IV | Brill, Gmelin, et al., 1990 | |
| 0.01 | 116. | crystaline, IV | crystaline, III | Brill, Gmelin, et al., 1990 | |
| 0.002 | 127. | crystaline, III | crystaline, II | Brill, Gmelin, et al., 1990 | |
| 0.306 | 164. | crystaline, II | crystaline, I | Brill, Gmelin, et al., 1990 |
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.
Brill, Gmelin, et al., 1990
Brill, W.; Gmelin, E.; Ehses, K.H.,
Specific heat of betaine calcium chloride dihydrate,
Ferroelectrics, 1990, 103, 25-33. [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 ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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