Sodium Hyposulphite is a common thiosulfate, a colorless, transparent monoclinic crystal. Sodium Hyposulphite is soluble in water and reacts with strong acids to produce sulfur and sulfur dioxide [1]. Sodium thiosulfate is an antidote for cyanide. It is colorless, transparent crystals or crystalline fine grains; odorless, salty taste; weathering in dry air, deliquescence in wet air; aqueous solution shows a weak alkaline reaction. With the participation of thiocyanase, it can combine with free cyanide ions in the body or combined with methemoglobin to form non-toxic thiocyanate, which can be excreted by urine and solve cyanide poisoning. In addition, it can also combine with various metal ions to form non-toxic sulfide to be excreted by urine, and it also has desensitizing effect.
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