Potassium Thiosulfate 97% Powder/50% Liquid

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 

K2S2O3                      ≥50g/100g

K2O content                   ≥25g/100g

S content                                ≤ 17g/100g

Sulphate(SO4)               ≤ 2g/100g

Density(20oC)                ≤ 0.5kg/l

pH-value(10%)             3.8-4.8

Sulfur                        ≤ 10g/100g

Fe                                      ≤ 200mg/kg

Appearance                  Colourless or light yellow transparent liquid