Partial molar volume of mefenamic acid in alcohol at temperatures between T=293.15 and T=313.15 K

• Autor(a) principal: Iqbal,Muhammad J.
• Data de Publicação: 2006
• Outros Autores: Siddiquah,Mahrukh
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Journal of the Brazilian Chemical Society (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532006000500006
• topic: apparent molar volume; partial molar volume; mefenamic acid; partial molar expansivity; alcohol

Apparent molar volume (Vphi), partial molar volume (V), solute-solute interaction parameter (Sv), partial molar expansivity (E(0)2) and isobaric thermal expansion coefficient (alpha2) of mefenamic acid in six different organic solvents namely, methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, and 2-butanol, have been calculated from the measured solution densities over a temperature range of T=293.15 and T=313.15±0.1K. The solution densities were measured by an automated vibrating tube densitymeter (Anton Paar DMA-48). The molality range investigated was between 6×10-3 and 3.25 ×10-2 mol kg -1. The effect of temperature on apparent molar volume and partial molar volume was also determined. Decrease in solute-solvent interactions with an increase in temperature has been noted. Partial molar volume of mefenamic acid changes with the change in solvent polarity.