Audited Supplier
Sodium Thiosulfate
7772-98-7
Na2s2o3
231-867-5
CCIC, CIQ, RoHS, ISO
≥99%
Sodium Sulfate
Powder
Industrial Grade
Sodium Thiosulfate
Sodium Thiosulfate Pentahydrate
Na2s2o3
158.108
100 ºC
Easy to Dissolve
1.667 G/Cm³
Industry Grade
Colorless Transparent Crystals
48 ºC
Soluble in Water
0.002% Max
7.5
99% Min
Dry Place
Kelai
25kg Bag, or 1000kg Jumbo Bag
25kg bag, or 1000kg jumbo bag
China
2830909000
Product Description
Sodium Thiosulfate Pentahydrate 99%/Sodium Thiosulfate 99% MIN
1.Brief Description
Molecular formula: Na2S2O3
CAS: 7772-98-7
Appearance:White powder
Properties:Single crystal is inclined white crytallized powder, a proportion of 1.667, soluble in water, alcohol, insoluble in air heating oxidation is decomposed into sodium and sulfur dioxide. In pure oxygen in combustion is generating sodium, method and sulfur.
2. Technical Data Sheet
| Item | Photographic grade | Industrial grade | Anhydrous grade |
| Appearance | colorless transparent crystal | colorless transparent crystal | white powder |
| Assay | ≥ 99.00% | ≥ 98.5% | ≥ 97.0% |
| Water Insoluble matter | ≤ 0.01% | ≤ 0.03% | ≤ 0.03% |
| Sulfide | ≤ 0.001% | ≤ 0.003% | ≤ 0.001% |
| Fe | ≤ 0.001% | ≤ 0.003% | ≤ 0.005% |
| PH | 6.5~9.5 | 6.5~9.5 | 6.5~9.5 |
| Water solution reaction | in accordance with the test | in accordance with the test | ---- |
| Granularity(g/g) | 12~16 | --- | ---- |
3. Application
(1). It is mainly used as fixing agent in photography industry.
(2). It is used as reducing agent of dichromate in tanning, neutralizer of nitrogen-containing tail gas, mordant, bleach of wheat straw and wool, and dechlorination agent in pulp bleaching. It is also used in the manufacture of tetraethyl lead, dye intermediates and silver extraction from ore.
4.Packing and Loading
(1) . Packing : 25kg net/bag or customized bag .
(2) . Loading quantity : 25MT/20'container
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