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            1. Welcome to visit Haimen Wuyang Chemical Industry Co.,Ltd. official website! Home | Contact Us | Admin | 中文版

              Products Position: Hone > Products
              Sodium thiosulfate

              1. Chemcial name:Sodium thiosulfate
              2. Structural formula:

              3. Molecular formula: Na2S2O3·5H2O
              4. Molecular weight: 248.17
              5. Physical and chemical properties: monoclinic crystal, melting point: 40-45℃, relative density: 1.729(17℃).
              6. Quality index:

              Item
              Photographic grade
              Technical grade
              Anhydrous grade
              Appearance
              colorless transparent crystal
              colorless transparent crystal
              white powder
              Content
              ≥99.00%
              ≥98.5%
              ≥97.0%
              Water insoluble matter
              ≤0.01%
              ≤0.03%
              ≤0.03%
              Sulfide
              ≤0.001%
              ≤0.003%
              ≤0.001%
              Iron
              ≤0.001%
              ≤0.003%
              ≤0.005%
              PH value
              6.5~9.5
              6.5~9.5
              6.5~9.5
              Aqueous reaction
              pass test
              pass test
              ----
              Particle size
              12~16
              ---
              ----


              7. Packing: 25kg, 50kg plastic woven bag, or at customer's request.
              8. Uses: in fixing agent, electroplating, leather, reducing agent, dechlorinating agent, fading agent, and other industries.

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