Journal of the Chemical Society - Faraday Transactions p. 997 - 1002 (1994)
Update date:2022-08-29
Topics:
Ball, Matthew C.
The hydrolysis of solid aspirin has been studied, using single-crystal material, over the temperature range 368-387 K at humidities varying between 7 and 24 kN m-2.The reaction follows the Avrami-Erofeyev equation, indicating that nucleation-and-growth kinetics are rate controlling, rather than the through-solution processes suggested previously.The Arrhenius parameters increase with increasing water vapour pressure and a compensation effect seems to operate.Water sorption and microscopy have been used to aid the kinetic analysis.
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