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Benzene-hexa-n-heptanoate

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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: E.S. Domalski and E.D. Hearing

Temperature of phase transition

Ttrs (K)Initial PhaseFinal PhaseReferenceComment
222.80crystaline, IIIcrystaline, IISorai and Suga, 1981Anomalous transition. c,II/c,I 230.81 K First order transition.
222.80crystaline, IIIcrystaline, IISorai, Tsuji, et al., 1979 

Enthalpy of phase transition

DeltaHtrs (kJ/mol)Temperature (K)Initial PhaseFinal PhaseReferenceComment
1.120129.crystaline, IVcrystaline, IIISorai and Suga, 1981 
32.210353.79crystaline, I Sorai and Suga, 1981 
21.540359.28  Sorai and Suga, 1981Triple point is 353.81 K.
1.120129.crystaline, IVcrystaline, IIISorai, Tsuji, et al., 1979 
11.500230.81crystaline, IIcrystaline, ISorai, Tsuji, et al., 1979Combination of transition c,III/c,II and c,II/c,I.
32.210353.79crystaline, IliquidSorai, Tsuji, et al., 1979 
21.540359.28liquidliquidSorai, Tsuji, et al., 1979 

Entropy of phase transition

DeltaStrs (J/mol*K)Temperature (K)Initial PhaseFinal PhaseReferenceComment
8.46129.crystaline, IV, Anomalous or diffuse firstcrystaline, III, order transitionSorai and Suga, 1981 
91.08353.79crystaline, I Sorai and Suga, 1981 
59.93359.28  Sorai and Suga, 1981Triple
8.46129.crystaline, IVcrystaline, IIISorai, Tsuji, et al., 1979 
50.44230.81crystaline, IIcrystaline, ISorai, Tsuji, et al., 1979Combination
91.08353.79crystaline, I, Solidliquid, mesophaseSorai, Tsuji, et al., 1979 
59.93359.28liquid, Mesophaseliquid, liquid transitionSorai, 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

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