Picene-picric acid
- Formula: C28H17N3O7
- Molecular weight: 507.4505
- CAS Registry Number: 72454-48-9
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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 | 437.9 | K | N/A | Farrell and Shahidi, 1979 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.4 K; TRC |
Enthalpy of fusion
| ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 5.0908 | 437.9 | Farrell, Shahidi, et al., 1979 | DH |
Entropy of fusion
| ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 11.6 | 437.9 | Farrell, Shahidi, et al., 1979 | DH |
Enthalpy of phase transition
| ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 0.7887 | 391. | crystaline, II | crystaline, I | Farrell, Shahidi, et al., 1979 | DH |
Entropy of phase transition
| ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 2.0 | 391. | crystaline, II | crystaline, I | Farrell, Shahidi, et al., 1979 | 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.
Farrell and Shahidi, 1979
Farrell, P.G.; Shahidi, F.,
DSC studies of aromatic hydrocarbon picrates,
Thermochim. Acta, 1979, 33, 275. [all data]
Farrell, Shahidi, et al., 1979
Farrell, P.G.; Shahidi, F.; Casellato, F.; Vecchi, C.; Girelli, A.,
DSC studies of aromatic hydrocarbon picrates,
Thermochim. Acta, 1979, 33, 275-280. [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 ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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