شماره ركورد كنفرانس :
4719
عنوان مقاله :
Isopiestic Determination of Water Activity and Vapor Pressure for Binary (choline bi-tartrate + water) and Ternary (choline bi-tartrate + diphenhydramine + water) Solutions at 298.15 K
پديدآورندگان :
Behboudi Mohammad Reza mohammadreza_behboudi@yahoo.com Physical Chemistry Department, University of Tabriz, Tabriz, Iran ; Fax: +98 413 3340191; Tel: 04133393094 ;E-mail: , Zafarani-Moattar Mohammad Taghi mohammadreza_behboudi@yahoo.com Physical Chemistry Department, University of Tabriz, Tabriz, Iran ; Fax: +98 413 3340191; Tel: 04133393094 ;E-mail: , Shekaaria Hemayat mohammadreza_behboudi@yahoo.com Physical Chemistry Department, University of Tabriz, Tabriz, Iran ; Fax: +98 413 3340191; Tel: 04133393094 ;E-mail:
كليدواژه :
Cholinium Bi , Tartrate , Diphenhydramine , Vapor Pressure , Water Activity
عنوان كنفرانس :
بيست و يكمين كنفرانس ملي شيمي فيزيك انجمن شيمي ايران
چكيده فارسي :
The bioavailability and stability of a drug can be affected by materials used for extraction of drug in pharmaceutical process [1]. Choline carboxylic acids are new type of salts which have unique properties such as high thermal stability, very small vapor pressure and have been used as green and biocompatible salts for many industrial applications [1]. The investigation of vapor-liquid equilibrium properties play an important role to describe intermolecular interactions in the electrolyte solutions [2]. In this study, water activity and vapor pressure for ternary ([Ch][bi] + diphenhydramine + water) systems have been determined by the isopiestic method. Interactions between diphenhydramine and cholinium bi-tartrate in aqueous solutions at T = 298.15 K have been investigated by the help of vapor-liquid equilibrium data.
