Abstract
During the process development of a pharmaceutical advanced intermediate, new chemistry using an aqueous workup resulted in the discovery of a new hydrated crystal form of this intermediate. This hydrated crystal form showed thermal instability at a relatively low temperature compared to the original anhydrous form. Thermal stability and associated process safety hazards were investigated in order to ensure process safety and transportation safety of this intermediate. © 2017 American Institute of Chemical Engineers Process Saf Prog 37: 263–267, 2018
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