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QSAR study on solubility of alkanes in water and their partition coefficients in different solvent systems using PI
Padmakar V Khadikar1, Dheeraj Mandloi, Amrit V Bajaj
1Research Division, Laxmi Fumigation and Pest Control, 3, Khatipura, Indore 452007, India. sachin_g@sancharnet.in
Abstract:
The aqueous solubility (S(w)) of liquids and solids, expressed as log S(w) as well as their partition coefficients in different solvent systems viz. P(oct) (partition coefficient in octanol-water), P(16) (partition coefficient in water-hexadecane), P(alk) (partition coefficient in water-alkane), and P(cyc) (partition coefficient in water-cyclohexane), and aqueous solubility (S(w)) have been estimated using the PI (Padmakar-Ivan) index and the results compared with those obtained using the widely used Wiener index (W). Regression analysis of the data using n-alkanes show that the PI index gives better results than the W index.
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