Production of Pure Ammonium Thiocyanate and Thiourea from Coal Byproduct Ammonium Thiocyanate

摘要

The principles described enable one to simplify the technology of purification and separation of isomers and to increase the purity of the end products. The purification and separation of isomers by vacuum distillation are carried out in a single stage without considerable power consumption, do not require other chemical reagents and are ecologically clean processes with a small content of by-products that can easily be trapped.