Solubility of Propyl p-Hydroxybenzoate in Supercritical Carbon Dioxide with and without a Cosolvent

The solid solubility of propyl p-hydroxybenzoate was measured for the first time in supercritical carbon dioxide at temperatures of (308.15, 318.15 and 328.15) K and pressures from (8.0 to 23.0) MPa. The influence of cosolventscyclohexane, cyclohexane + acetone (molar ratio 1:1), and acetonewas st...

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Bibliographic Details
Published in:Journal of chemical and engineering data 2005-05, Vol.50 (3), p.801-803
Main Authors: Jin, Jun-su, Zhang, Ze-ting, Li, Qun-sheng, Li, Ying, Yu, En-ping
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
Solubility
Solutions
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Summary:The solid solubility of propyl p-hydroxybenzoate was measured for the first time in supercritical carbon dioxide at temperatures of (308.15, 318.15 and 328.15) K and pressures from (8.0 to 23.0) MPa. The influence of cosolventscyclohexane, cyclohexane + acetone (molar ratio 1:1), and acetonewas studied at a mole fraction of 0.035. The data were obtained by using a flow-type phase equilibrium apparatus, which was further tested by measuring the solubility of benzoic acid in compressed CO2. The measured solubilities in supercritical CO2 without and with cosolvents were correlated using the Chrastil equation and the modified Chrastil equation, respectively.
ISSN:0021-9568
1520-5134
DOI:10.1021/je049752p