Asian Journal of Pharmacy and Technology

Ulhas Balkrishna Hadkar ¹, Asavari Sameer Hadkar ¹, Sweta Vivek Jagtap ¹, Neeraja Prakash Chimote ¹

Affiliations
1 Mumbai Educational Trust’s Institute of Pharmacy, Bandra (west), Mumbai-400050, IN

Abstract

A simple conductivity method has been used to measure the volume of an object such as glass rod immersed in the standard electrolyte solution using a specially designed conductivity cell. This method has been proposed to measure rat paw edema, using an electrolyte solution isotonic with blood such as aqueous 0.9% NaCl solution.

Keywords

Conductivity Meter, H-Type Conductivity Cell, Cell Constant.

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Ulhas Balkrishna Hadkar ¹, Munira Aunali Loliwala ¹

Affiliations
1 Mumbai Education Trust’s, Institute of Pharmacy, Bandra (west), Mumbai- 400050, Maharashtra, IN

Abstract

Equations have been reported in the literature to predict the surface tension of binary liquid mixtures. However, the equations involve large number of variables and are very complex. In the present article an attempt is made to propose an empirical equation to predict the surface tension of binary organic liquid mixtures. A simple equation, 'Hadkar Equation', has been proposed and was used to calculate the surface tension of binary liquid mixtures that have already been reported in the literature and was found to give the results close to the reported values. To verify the utility of the equation for the prediction of surface tension of liquid mixture, the surface tension of a few organic binary liquid mixtures was determined using drop weight method. The 'Hadkar Equation', was found to be useful in the prediction of surface tension of organic binary liquids having weak force of attraction.

Keywords

Surface Tension, Drop Weight Method, Dielectric Constant, Intermolecular Forces.

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Ulhas Balkrishna Hadkar ¹, Poonam Rajesh Advani ¹, Radhika Kishore Raheja ¹

Affiliations
1 Mumbai Educational Trust Institute of Pharmacy, Bandra (West), Mumbai-400050, IN

Abstract

Synthesis of Benzimidazole and 2-Methylbenzimidazole from o-Phenylenediamine has been reported by conventional method of heating the reaction mixture on a water bath. Synthesis of Benzoic acid from Benzaldehyde by Cannizzaro reaction has also been reported. The authors of this article have synthesized these compounds by heating the reaction mixture in an autoclave. The yield obtained was found to be greater than that obtained using reported conventional methods, which emphasizes the utility of autoclave in the synthesis of organic compounds. The structure of synthesized compound was confirmed by Fourier-Transform Infrared Spectroscopy (FT-IR).

Keywords

Synthesis, Autoclave, Benzimidazole, 2-Methylbenzimidazole, Benzoic Acid, Cannizzaro Reaction.

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