The role of thiourea is to improve the reaction rate, promote germination, sterilization, can reduce free state iodine to iodine ion, etc.. It is commonly used as a raw material for the manufacture of drugs, dyes, resins, pressed plastic powder, etc. It is also used as a vulcanization accelerator for rubber, flotation agent for metal minerals, etc. Thiourea is an organic sulfur-containing compound, white and shiny crystals, bitter taste, made from the action of hydrogen sulfide and lime slurry into calcium thiocyanide, and then with the action of calcium cyanamide. It can also be made by melting ammonium thiocyanide, or by the action of aminocyanine with hydrogen sulfide.

The role of thiourea is to improve the reaction rate, promote germination, sterilization, can make the free state of iodine reduction to iodine ions. It is often used as a raw material for the manufacture of drugs, dyes, resins, pressed plastic powder, etc. It can also be used as a vulcanization accelerator for rubber and a flotation agent for metal minerals. Thiourea is an organic sulfur-containing compound, white and shiny crystals, bitter taste, made from the action of hydrogen sulfide and lime slurry into calcium thiocyanide, and then with the action of calcium cyanamide. It can also be made by melting ammonium thiocyanide, or by the action of aminocyanine and hydrogen sulfide. Thiourea is easy to be deliquesced in the air, converted into ammonium thiocyanate at 150℃, sublimated at 150-160℃ under vacuum, and decomposed at 180℃. It should be stored in a cool and ventilated warehouse, away from fire and heat source.