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Sodium Thiocyanate
white orthorhombic crystal or powder, relative density 1.735, melting point about 287℃, easily soluble in water, ethanol, acetone and other solvents, the aqueous solution is neutral, and it will produce blood red iron thiocyanide when it meets iron salts. It does not react with ferrous salt, and it reacts with concentrated sulfuric acid to generate yellow sodium cyanide sulfate, reacts with cobalt salt to generate dark blue cobalt thiocyanate, and reacts with silver or copper salt to generate white silver thiocyanide or black thiocyanate. Copper precipitates and is easily deliquescent in the air.
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