Sodium Thiosulfate Pentahydrate [Na2O3S2.5H2O] [CAS_10102-17-7] Food Grade 99%, Solid (50 Lb 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.

Sales Specification

• Appearance: Solid
• Assay: ≥ 99.00 %
• Sodium Thiosulfate (Na2S2O3) : ≤ 100.50 %
• Lead: ≤ 2 mg/kg
• Selenium: ≤ 0.003 %
• Water: 32.00 % - 37.00 %
• Sulfate : Nil
• Sulfite : Nil
• Chloride: Nil
• pH of 10% solution: 6.0 – 8.0
• Iron: 0.002 %

Packing

50 lb paper bag