1994 Hansen 5316554 crystalline ammonium carbamate

Ammonium carbamate in a solution consisting urea, water and ammonia and under high temperature and pressure is cooled to below its crystallization point while being subjected to an elevated pressure. The crystallized substance is dried, crushed and pelletized with the aid of a binding agent. The product is particular used as deicer for roadways.

 

 

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