Sodium thiosulfate pentahydrate AGR

Na₂S₂O₃·5H₂O
M.W: 248,21  CAS: 10102-17-7  EC: 231-867-5  TARIC: 28323000

P: P102-P202  

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• Appearance ? Large, colourless crystals or coarse crystalline powder
• Assay 99.5 – 101%
• Insoluble matter (10% in water) ? 0.005%
• pH (5% solution in water) 6.0 – 8.4
• Nitrogen (N) compounds ? 0.002%
• Chloride (Cl^–) ? 0.02%
• Heavy metal (as Pb) ? 0.001%
• Sulfates and Sulfites (SO₄) ? 0.1%
• Sulphide (S) ? Passes test

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