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https://doi.org/10.37358/Rev.Chim.1949

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Revista de Chimie (Rev. Chim.), Year 2009, Volume 60, Issue 4,





BOGDAN TITA, ADRIANA FULIAS, ELEONORA MARIAN, DUMITRU TITA
Thermal Behaviour of Acetylsalicylic Acid - active Substance
and Tablets Kinetic Study under Non-isothermal Conditions

Abstract:

The application of thermal methods is of great importance in the solution of pharmaceutical problems such as the control of raw materials, the determination of purity, the qualitative and quantitative analysis of drug formulation, tests of thermal stability and compatibility, the determination of kinetic parameters etc. The evaluation of thermal stability in the solid state is mostly made by analysing their decomposition under isothermal or non-isothermal conditions. This work reports the study of the thermal behaviour of acetylsalicylic acid active substance and tablets, together with the determination of the melting points and the degree of purity by TG, DTG and DSC. A kinetic study of the thermal decomposition of acetylsalicylic acid active substance was carried out using dynamic TG curves and the differential-isoconversional Friedman method, respectively the non-parametric kinetics method. Keywords: acetylsalicylic acid, drug, tablets, TG, DTG, DSC


Issue: 2009, Volume 60, Issue 4
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