Rubidium butyrate
- Formula: C4H7O2Rb
- Molecular weight: 172.5650
- IUPAC Standard InChI: InChI=1S/C4H8O2.Rb/c1-2-3-4(5)6;/h2-3H2,1H3,(H,5,6);/q;+1/p-1
- IUPAC Standard InChIKey: HYWCISCKYCCFMI-UHFFFAOYSA-M
- CAS Registry Number: 38869-23-7
- Chemical structure:
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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 as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tfus | 652. | K | N/A | Ferloni, Sanesi, et al., 1975 | Crystal phase 1 phase; Uncertainty assigned by TRC = 1. K; TRC |
Enthalpy of phase transition
| ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 2.385 | 191. | crystaline, IV | crystaline, III | Ferloni, Sanesi, et al., 1975, 2 | DH |
| 1.005 | 346. | crystaline, III | crystaline, II | Ferloni, Sanesi, et al., 1975, 2 | DH |
| 2.340 | 466. | crystaline, II | crystaline, I | Ferloni, Sanesi, et al., 1975, 2 | DH |
| 15.730 | 652. | crystaline, I | liquid | Ferloni, Sanesi, et al., 1975, 2 | DH |
Entropy of phase transition
| ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 12.5 | 191. | crystaline, IV | crystaline, III | Ferloni, Sanesi, et al., 1975, 2 | DH |
| 2.9 | 346. | crystaline, III | crystaline, II | Ferloni, Sanesi, et al., 1975, 2 | DH |
| 5.0 | 466. | crystaline, II | crystaline, I | Ferloni, Sanesi, et al., 1975, 2 | DH |
| 24.1 | 652. | crystaline, I | liquid | Ferloni, Sanesi, et al., 1975, 2 | DH |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Ferloni, Sanesi, et al., 1975
Ferloni, P.; Sanesi, M.; Franzosini, P.,
Phase transitions in the alkali C1-n.C4 alkanoates,
Z. Naturforsch., A: Phys., Phys. Chem., Kosmophys., 1975, 30, 1447-57. [all data]
Ferloni, Sanesi, et al., 1975, 2
Ferloni, P.; Sanesi, M.; Franzosini, P.; C4 alkanoates, Phase transitions in the alkali C1-n.,
Z. Naturforsch. 30a, 1975, 1447-1454. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Tfus Fusion (melting) point ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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