Phenolphthalein

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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
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tfus534.7KN/ABebie, 1930Uncertainty assigned by TRC = 2. K; TRC
Tfus535.7KN/ABebie, 1930Uncertainty assigned by TRC = 1.5 K; TRC
Quantity Value Units Method Reference Comment
Ttriple534.KN/AGrantscharova, Avramov, et al., 1984Crystal phase 1 phase; Uncertainty assigned by TRC = 2. K; TRC

Enthalpy of fusion

ΔfusH (kJ/mol) Temperature (K) Reference Comment
51.045534.Grantscharova, Avramov, et al., 1984, 2DH
51.05534.Domalski and Hearing, 1996AC

Entropy of fusion

ΔfusS (J/mol*K) Temperature (K) Reference Comment
95.6534.Grantscharova, Avramov, et al., 1984, 2DH

Enthalpy of phase transition

ΔHtrs (kJ/mol) Temperature (K) Initial Phase Final Phase Reference Comment
22.594411.crystaline, IIcrystaline, IGrantscharova, Avramov, et al., 1984, 2Amorphous/crystal.; DH

Entropy of phase transition

ΔStrs (J/mol*K) Temperature (K) Initial Phase Final Phase Reference Comment
55.0411.crystaline, IIcrystaline, IGrantscharova, Avramov, et al., 1984, 2Amorphous/crystal.; DH

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


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.

Bebie, 1930
Bebie, J., Suggestions Related to U. S. P. X Revision, J. Am. Pharm. Assoc., 1930, 19, 371. [all data]

Grantscharova, Avramov, et al., 1984
Grantscharova, E.; Avramov, I.; Gutzow, I., Thermodynamic behavior of amorphous and crystalline phenolphthalein, Dokl. Bolg. Akad. Nauk, 1984, 37, 1521-3. [all data]

Grantscharova, Avramov, et al., 1984, 2
Grantscharova, E.; Avramov, I.; Gutzow, I., Thermodynamic behavior of amorphous and crystalline phenolphthalein, Dokl. Bolg. Akad. Nauk, 1984, 37, 1521-1523. [all data]

Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D., Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III, J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985 . [all data]


Notes

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