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Abstract
Molecular interactions of niacin in aqueous medium, aqueous solutions of KCl and FeCl3 were analyzed and various thermodynamic parameters like partial molar volumes and limiting molar expansibilities of Niacin were analyzed in water and binary aqueous mixtures of KCl and FeCl3 at different temperatures. Masson’s equation and Hepler’s criterion have been used to infer various types of interactions and in the present study niacin was found structure promoter in water and structure breaker in mixtures of KCl and FeCl3 in water respectively.