Thiourea
name：Thiourea
Formula：（NH2）2CS
M.W：76.12
CAS NO.：62-56-6
Characters：White, shiny and crystal-clear, bitter, decomposed in heat, soluble in water, and complex with many metals and inorganic salts.
Usage：sed as thiazole drugs (e.g., sulfathiazole, insect repellent net) and inhibit thyroid patients drug intermediates, production system a narrowing the sulfonic acid (sulfur oxide urea) in textile industry as bleach, dyeing auxiliaries and antioxidant;It is used in blueprint drawing, with clear blue line and easy to fade.In the photographic industry, as a stabilizer for developing or fixing emulsion;Giant drugs used for refining of gold, but instead of cyanide, used in the electroplating industry, the copper plating or barium adding thiourea plating bath, can be in the metal deposition, to enhance the stability of plating solution and ensure a uniform luster surface plating;Used in high-pressure boiler to clean dirt;Thiourea can be used as a synergist for nitrogen fertilizer, and thiourea can also be used to prevent and control the germination period.
Specification：

Item name

item

premium grade

firsts

qualified product

content%≥

99.0

98.5

98.0

heating loss%≤

0.40

0.50

1.00

ash content %≤

0.10

0.15

0.30

Water should not be content%≤

0.02

0.05

0.10

Thiocyanate (CNS)%≤

0.02

0.05

0.10

melting point℃%

171

170

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