Limiting activity coefficients of aliphathic alcohols in phthalates

✍ Scribed by S.M. Ashraf; A. Rajiah; M.Rama Krishna; M.Bhagavanth Rao

• Book ID: 104144505
• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 661 KB
• Volume: 472
• Category: Article
• ISSN: 1873-3778
• DOI: 10.1016/s0021-9673(00)94104-9

✦ Synopsis

Limiting activity coefficients of methanol, ethanol, 1-propanol, 1-butanol and 1-pentanol were determined in di-n-decyl phthalate (DNDP), diisodecyl phthalate, di-n-butyl phthalate and tetrachlorodibutyl phthalate at 50-100°C. In order to ascertain the surface effects at the gas-liquid interface, the limiting values were evaluated at 15, 20 and 30% column loadings for DNDP. The data, corrected for surface effects, show excellent agreement with the experimental data at a 30% column loading. The limiting activity coefficient values of these alcohols were determined at 15 and 30% column loadings for other phthalates. All the alcohols were found to show a positive deviation from Raoult's law. A decrease in the limiting value with increase in the molecular weight of the alcohols was also observed.