Vapor pressures and phase changes enthalpy and Gibbs energy of three crystalline monomethyl benzenedicarboxylates

• Type: Article in International Scientific Journal
• Date: 2005

Authors

Monte, MJS (Author) FCUP; Sousa, CAD (Author) Other

Journal

Title: Journal of Chemical & Engineering Data

Vol. 50 No. 1

Pages: 2101-2105

ISSN: 0021-9568

Publisher: American Chemical Society

Indexing

ISI Web of Knowledge - 11 Citations

Scopus - 11 Citations

Scientific classification

FOS: Engineering and technology > Chemical engineering

Other information

Authenticus ID: P-000-0QA

DOI: 10.1021/je0503305

Abstract (EN): The Knudsen mass-loss effusion technique was used to measure the vapor pressures, between 0.1 Pa and 1 Pa, of the three monomethyl benzenedicarboxylates over the following temperature intervals: monomethyl phthalate, between 335.28 K and 355.28 K; monomethyl isophthalate, between 359.26 K and 379.12 K; monomethyl terephthalate, between 363.16 K and 381.51 K. From the variation of the vapor pressures with temperature, the standard molar enthalpies, entropies, and Gibbs energies of sublimation at T = 298.15 K were calculated. The volatility of the studied compounds is compared with the volatilities of the benzene dicarboxylic acids and of the dimethyl benzenedicarboxylates.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5