METHOD OF PRODUCING HIGH-PURITY CRYSTALLINE CARBAMIDE Russian patent published in 2013 - IPC C07C273/16

Abstract RU 2472777 C1

FIELD: chemistry.

SUBSTANCE: method involves crystallising carbamide and drying. Aqueous solution of carbamide is pre-heated to temperature of +30°C to +130°C and then subjected to electrodialysis treatment at voltage of 400 V - 600 V.

EFFECT: obtaining high-purity crystalline carbamide, which enables use thereof as an additive in the food industry and as a reagent in laboratory analyses.

2 cl, 1 dwg, 2 tbl

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RU 2 472 777 C1

Authors

Batullin Farid Alekovich

Andreev Andrej Vladimirovich

Dates

2013-01-20—Published

2011-11-23—Filed