Sodium thiosulphate anhydrous is an opaque crystalline powder. The relative density is 1.667. It is odorless, salty taste, soluble in water, insoluble in ethanol.deliquescence easily in air.
sodium thiosulfate anhydrous, (Na2S2O3) can be synthesized from sodium sulfate.Sodium thiosulfate is an inorganic sodium salt composed of sodium and thiosulfate ions in a 2:1 ratio. It has a role as an antidote to cyanide poisoning, a nephroprotective agent and an antifungal drug.It can be obtained from Na2S2O3.10H2O by heating above 100°C.