Ammonium Thiosulphate Powder SKU: SKU RXSOL-19-3705-050 Product Category: Category Raw Chemicals-19 Variations Ammonium Thiosulphate Powder Short Description Short Description Ammonium thiosulfate is a white, crystalline solid with the chemical formula (NH4)2S2O3. It has a characteristic ammonia odor and is highly soluble in water, but slightly soluble in acetone and insoluble in ethanol and diethyl ether