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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Na₂SO₃
M.W: 126,04  CAS: 7757-83-7  EC: 231-821-4  TARIC: 28321000

P: P102+P202  

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• Appearance ? White crystalline powder
• Assay ? 98%
• Insolubility in water ? 0.005%
• Acidity ? Passes test
• Alkalinity ? 0.03meq/g
• Chloride (Cl^–) ? 0.02%
• Heavy metal (as Pb) ? 0.001%
• Iron (Fe) ? 0.0005%

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Na₂C₂O₄
M.W: 134,00  CAS: 62-76-0  EC: 200-550-3  TARIC: 29171100
EC INDEX: 607-007-00-3  
H: H312-H302  

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• Assay ? 99.8%
• pH (3% water) 7.5 – 8.5
• Iron (Fe) ? 0.0005%
• Total Nitrogen ? 0.001%
• Chloride (Cl^–) ? 0.002%
• Loss on drying (105 °C) ? 1%
• Sulfates (SO₄) ? 0.02%
• Heavy metals (Pb) ? 0.001%
• Potassium (K) ? 0.005%

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NaI
M.W: 149,89  CAS: 7681-82-5  EC: 231-679-3  TARIC: 28151100

UN: 3077  IMDG: 9 III UN 3077  ADR: 9 III UN 3077  IATA: 9 III UN 3077  H: H400;H319;H315  P: P264;P273;P280;P302+P352;P305+P351+P338;P337+P313;P391;P501  

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• Assay ? 99.5%
• Appearance white crystalline powd.
• Iron (Fe) ? 0.0005%
• pH (5% water) 6 – 9
• Chloride (Cl^–) and Bromide (Br^–) (by Cl) ? 0.01%
• Iodates (IO₃) ? 0.0003%
• Phosphate (PO₄) ? 0.001%
• Loss on drying (105 °C) ? 0.5%
• Sulfates (SO₄) ? 0.005%
• Potassium (K) ? 0.01%
• Heavy metals (Pb) ? 0.0005%
• Calcium (Ca) ? 0.002%

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