Dissolution properties of oxymatrine in citric acid solution

In this article, the enthalpy of dissolution for oxymatrine in 0.15 M citric acid solution is measured using a RD496-2000 Calvet Microcalorimeter at 36.5 °C under atmospheric pressure. The differential enthalpy ( Δ dif H m ) and molar enthalpy ( Δ sol H m ) were determined for oxymatrine dissolution...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2011-06, Vol.104 (3), p.1191-1194
Main Authors: X. Li, Z., Pu, X. H., Zhao, W. W.
Format: Article
Language:English
Subjects:
Analytical Chemistry
Atmospheric pressure
Barometric pressure
Calorimetry
Chemical thermodynamics
Chemistry
Chemistry and Materials Science
Citric acid
Dissolution
Enthalpy
Exact sciences and technology
General and physical chemistry
Inorganic Chemistry
Kinetic equations
Mathematical analysis
Measurement Science and Instrumentation
Mixtures
Physical Chemistry
Polymer Sciences
Thermodynamic properties
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Summary:In this article, the enthalpy of dissolution for oxymatrine in 0.15 M citric acid solution is measured using a RD496-2000 Calvet Microcalorimeter at 36.5 °C under atmospheric pressure. The differential enthalpy ( Δ dif H m ) and molar enthalpy ( Δ sol H m ) were determined for oxymatrine dissolution in 0.15 M citric acid solution. On the basis of these experimental data and calculated results, the kinetic equation, half-life, Δ sol H m , Δ sol G m , and Δ sol S m of the dissolution process were also obtained.
ISSN:1388-6150
1588-2926
1572-8943
DOI:10.1007/s10973-011-1355-6