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Calculations pertaining to nth order analyses of various solid state reaction kinetics models have been extended to consider iso-conversional Arrhenius (i.e. Friedman) analyses. Non-isothermal extent and rate of reaction data for several models, with the same kinetics parameters, generated over a wide heating rate range, are subjected to both Arrhenius and Friedman nth order analyses over the entire...
The complexities met in utilizing thermal analysis to describe the physico-chemical behavior of pharmaceutical compounds are demonstrated by discussing that of probenecid tablets. The DSC-TG characteristics (supported when necessary by X-ray diffraction measurements) of the active drug and major excipient components of the formulation are presented and discussed as an example of the information necessary...
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