Regular paperThermochemical study of Methabenzthiazuron (cas 18691-97-9)

Add time:09/29/2019    Source:sciencedirect.com

A calorimetric study of methabenzthiazuron (MBT) has provided evidence of chemical transformation in the solid state at room temperature. Traces of water vapour were absorbed to form a hydrate, which produces a binary eutectic system with MBT at a temperature of 380.3 K and an estimated mole fraction of MBT of xA = 0.78. The mean value of the hydration rate of MBT at room temperature is V̄A → B = 3.7 × 10−5 mol% min−1. The mean value of the thermal decomposition rate of MBT at the melting temperature T°m = 393.5 K is V̄A = 0.01% mol min−1. The highest rate of decomposition, V̄E = 0.14% mol min−1, was observed at the eutectic temperature.

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