Benzene-hexa-n-heptanoate
- Formula: C48H78O12
- Molecular weight: 847.1257
- IUPAC Standard InChI: InChI=1S/C48H78O12/c1-7-13-19-25-31-37(49)55-43-44(56-38(50)32-26-20-14-8-2)46(58-40(52)34-28-22-16-10-4)48(60-42(54)36-30-24-18-12-6)47(59-41(53)35-29-23-17-11-5)45(43)57-39(51)33-27-21-15-9-3/h7-36H2,1-6H3
- IUPAC Standard InChIKey: XSMGMVIWGWBNBA-UHFFFAOYSA-N
- CAS Registry Number: 65201-70-9
- 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 by: Eugene S. Domalski and Elizabeth D. Hearing
Temperature of phase transition
| Ttrs (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|
| 222.80 | crystaline, III | crystaline, II | Sorai and Suga, 1981 | Anomalous transition. c,II/c,I 230.81 K First order transition. |
| 222.80 | crystaline, III | crystaline, II | Sorai, Tsuji, et al., 1979 |
Enthalpy of phase transition
| ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 1.120 | 129. | crystaline, IV | crystaline, III | Sorai and Suga, 1981 | |
| 32.210 | 353.79 | crystaline, I | Sorai and Suga, 1981 | ||
| 21.540 | 359.28 | Sorai and Suga, 1981 | Triple point is 353.81 K. | ||
| 1.120 | 129. | crystaline, IV | crystaline, III | Sorai, Tsuji, et al., 1979 | |
| 11.500 | 230.81 | crystaline, II | crystaline, I | Sorai, Tsuji, et al., 1979 | Combination of transition c,III/c,II and c,II/c,I. |
| 32.210 | 353.79 | crystaline, I | liquid | Sorai, Tsuji, et al., 1979 | |
| 21.540 | 359.28 | liquid | liquid | Sorai, Tsuji, et al., 1979 |
Entropy of phase transition
| ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 8.46 | 129. | crystaline, IV, Anomalous or diffuse first | crystaline, III, order transition | Sorai and Suga, 1981 | |
| 91.08 | 353.79 | crystaline, I | Sorai and Suga, 1981 | ||
| 59.93 | 359.28 | Sorai and Suga, 1981 | Triple | ||
| 8.46 | 129. | crystaline, IV | crystaline, III | Sorai, Tsuji, et al., 1979 | |
| 50.44 | 230.81 | crystaline, II | crystaline, I | Sorai, Tsuji, et al., 1979 | Combination |
| 91.08 | 353.79 | crystaline, I, Solid | liquid, mesophase | Sorai, Tsuji, et al., 1979 | |
| 59.93 | 359.28 | liquid, Mesophase | liquid, liquid transition | Sorai, Tsuji, et al., 1979 |
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.
Sorai and Suga, 1981
Sorai, M.; Suga, H.,
Studies on mesogenic disc-like molecules. II. Heat capacity of benzene-hexa-n-heptanoate from 13 to 393 K,
Mol. Cryst. Liq. Cryst., 1981, 73, 47-69. [all data]
Sorai, Tsuji, et al., 1979
Sorai, M.; Tsuji, K.; Suga, H.; Seki, S.,
Heat capacities of a disc-like mesogen and its precursor having a structure of benzene hexa-n-alkanoate (C6(OCO-n-CmH2m+1)6),
Liq. Cryst., 1979, Proc. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Ttrs Temperature of phase transition ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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