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 gas purification.
Sodium Thiosulfate Pentahydrate FCC
WC Code: 19-125-02
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 %
Particle Size: 5mm – 8mm
Packing
50 lb paper bag, 44 bags per pallet
Sodium Thiosulfate Pentahydrate FCC
WC Code: 19-125-01
Sales Specification
Appearance: 2–4 mm solid
Purity: ≥ 98.5%
Water Insoluble: ≤ 0.01%
Sulphide: ≤ 0.001%
Iron: ≤ 0.002%
pH (10% solution): 7.5 – 9.5
NaCl: ≤ 0.05%
Packing
55.115 lb paper bag, 40 bags per pallet
