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Product Deail
Sodium thiosulfate anhydrous
【Another name】Sodium hyposulfite、sodium bicarbonate of soda、disodium thiosulfate、sea wave.
【Description】Colorless crystal or white powder, deliquescent in moist air, insoluble in alcohol, soluble in water.
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Test items |
High purity |
Other |
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Assay(Na2O3S2) /% |
≥97.0 |
Custom |
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Mesh number |
20-100 |
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Insoluble matter /% |
≥0.4 |
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Heavy metals(as Pb) /% |
≤0.002 |
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Iron (as Fe) /% |
≤0.005 |
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Free base(as NaOH) /% |
≤0.06 |
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Acidity (as H2SO4) /% |
≤0.01 |
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Sulfide /% |
≤0.000 6 |
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pH |
6.5-9.5 |
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Appearance of solution |
Transparent without soluble matter(except for trace floc) |
【Use】Photography as fixing agent;As a reducing agent of dichromate in tanning;The neutralizer containing nitrogen tail gas;Mordants;Bleaching agent for straw and wool;Dechlorination agent for pulp bleaching;Dye intermediates;Ore about silver.
