ScienceAsia 33 (2007): 469-472 |doi: 10.2306/scienceasia1513-1874.2007.33.469

Solubility of Stearic Acid in Various Organic Solvents and Its Prediction using Non-ideal Solution Models

Rudi Heryanto,^a,b Masitah Hasan,^a* Ezzat Chan Abdullah^a and Andri Cahyo Kumoro ^a,c

ABSTRACT:    The solubility of stearic acid in ethanol, methanol, ethyl acetate, and acetone has been measured gravimetrically at various temperatures ranging from 301 to 313 K at atmospheric condition. The solubility of stearic acid in ethyl acetate was found to be the highest, followed by ethanol, acetone and methanol. All experimental data were correlated using non-ideal solution models, namely, the modified Apelblat and the Buchowski equations. The calculated results agreed well with the experimental data.

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^a Department of Chemical Engineering, Faculty of Engineering, University of Malaya Lembah Pantai 50603 Kuala Lumpur, Malaysia.
^b Department of Chemistry, Faculty of Mathematics and Natural Sciences, Bogor Agricultural University, Bogor, Indonesia.
^c Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Semarang, Indonesia.

* Corresponding author, E-mail: masitahhasan@um.edu.my

Received 18 Apr 2007, Accepted 1 Aug 2007