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Potassium thiosulfate is white loose powder or crystals. Relative density of 1.178. Stable in the air, no moisture absorption. The decomposition of soluble in water and slowly release hydrogen. Potassium thiosulfate soluble in liquid ammonia, slightly soluble in methanol and ethanol, almost insoluble in ethyl ether, benzene, tetrahydrofuran and methyl ether and other hydrocarbons. Potassium thiosulfate stable in alkaline conditions, the decomposition of inorganic acid and release hydrogen. In a vacuum of about 500 °C.
Solid Potassium thiosulfate Specification
Appearance White crystalline powder
Loss on drying 0.30% MAX
Assay(Titration) 97.0% min
Mg 5ppm MAX
Fe 10ppm MAX
Liquid Potassium thiosulfate Specification
K2O content ≥25g/100g
S content ≤ 17g/100g
Sulphate(SO4) ≤ 2g/100g
Density(20oC) ≤ 0.5kg/l
Sulfur ≤ 10g/100g
Fe ≤ 200mg/kg
Appearance Colourless or light yellow transparent liquid
1) Pharmaceutical Industry
Potassium thiosulfate used in pharmaceutical, fiber modifier
Potassium thiosulfate used for organic selective reduction reaction of the groups; Used as aldehydes, ketones and acyl chloride type of reducing agent, organic functional groups can be RCHO, RCOR, RCOCl reduction for RCH2, CHR2, HOHR, RCH2OH, etc; Also used in analytical chemistry, paper-making industry, treatment of wastewater containing mercury and synthetic fiber and potassium.
Liquid: 200kg/drum, or as per customer request.