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Sodium Thiosulphate AR 500g 99.5%
Sodium Thiosulphate AR (Analytical Reagent) 500g with a 99.5% minimum assay is a high-purity chemical used in laboratories, photography, water treatment, and gold extraction.
It acts as a reliable reducing agent, chlorine neutralizer, and photographic fixing agent.
Product Specifications
Assay: \(\ge 99.5\%\)
Appearance: White crystalline solidCAS Number: 7772-98-7 (Anhydrous) or 10102-17-7 (Pentahydrate)
Loss on Drying: Max 1%
Heavy Metals & Impurities: Strictly limited (e.g., Chloride \(\le 0.01\%\), Iron \(\le 0.0005\%\)
Sodium Thiosulphate 99.5% AR 500g
Application
Sodium thiosulphate and ammonium sulfate in gold extraction
Treatment of cyanide poisoning
It is used to dechlorinate tap water including lowering chlorine levels for use in aquariums, swimming pools, and spa
In water treatment plants to treat settled backwash water prior to release into rivers
To neutralize the color-removing effects of bleach Sodium thiosulphate is used
Used in photographic processing
Specifications
| Appearance (Colour) | White |
| Appearance (Form) | Crystalline compound |
| Solubility (Turbidity) 10% aq. solution | Clear |
| Solubility (Colour) 10% aq. solution | Colourless |
| Assay | min. 99.5% |
| pH (5% aq. solution) | 6.0-8.5 |
| Loss on drying | max. 1% |
| Chloride (CI) | max. 0.01% |
| Iron (Fe) | max. 0.0005% |
| Heavy Metals (Pb) | max. 0.0005% |
| Sulphate & sulphite (SO4) | max. 0.03% |
| Sulphide (S) | max. 0.0001% |
| Copper (Cu) | max. 0.0005% |
| Potassium (K) | max. 0.001% |
| Nitrogen Compounds (N) | max. 0.002% |
Sodium Thiosulphate 99.5% AR 500g
