Sodium Thiosulfate Anhydrous Food Grade [Na2S2O3] [CAS_7772-98-7] 98+% White Powder (50 Lb Bag)

Sales Specification

• Sodium Thiosulphate (by mass)  : 98.00% Min
• pH of 10% Solution  :6.5 to 9.5
• Insoluble in water  :0.001% Max
• Sodium Sulphide  :0.001% Max
• Iron (Fe)  : 0.005% Max
• Loss on drying:1.5% Max
• Bulk Density :1.667 g/cc

Packing

50 lb paper bag

Applications

Sodium Thiosulfate is a white translucent crystals or powder that is common as the pentahydrate form; melting at 48 C; readily soluble in water and oil of turpentine; aqueous solution is slightly alkaline which decompose to sulfate and sulfide in the air. It is a moderate reducing agent. It is a source of thiosulfate ion (S2O3-2) (dissolves silver salts). Its major use is as a fixing agent in photography for developing film and the extracting silver from ore. It is used in chrome-tanning leather and in chemical manufacture as a source of sulfide ion. It is also used in paper, textile, and water treatment industry and gas purification. When used in food processing, sodium thiosulfate is a powerful antioxidant, meaning it helps prevent oxidation of food, which can lead to issues with the odor, flavour, and texture of food products. It also acts as a “sequestrant,” meaning that it attracts certain ions that can prevent fat oxidation.