As a common thiosulfate, sodium thiosulfate is a colorless and transparent monoclinic crystal. Sodium thiosulfate is easily soluble in water and reacts with strong acid to generate elemental sulfur and sulfur dioxide gas.
Sodium thiosulfate is the antidote to cyanide. Which is colorless and transparent crystals or crystalline particles; Odorless and salty; Weathering in dry air and deliquescence in humid air; The aqueous solution shows weak alkaline reaction.
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With the participation of thiocyanase, it can combine with free cyanide ions in the body or methemoglobin to form nontoxic thiocyanate, which is excreted in urine to solve cyanide poisoning.
Sodium thiosulfate is mainly used as a fixing agent in photography industry. Secondly, it is used as reducing agent of dichromate, neutralizer of nitrogen-containing tail gas, mordant, bleaching agent of wheat straw and wool, dechlorination agent in pulp bleaching.
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