Sodium Thiosulfate Pentahydrate [Na2O3S2.5H2O] [CAS_10102-17-7] Food Grade 99%, Solid (55.12 Lb Bag)

$ 183.00 $ 216.00

Wintersun code: 19-125-01
CAS Number: 10102-17-7
Molecular Formula: Na2O3S2.5H2O
Molecular Weight: 248.18 g/mol


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

    55.12 lb paper bag

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