|
Indicator Description |
AR |
|
Na2S2O3 · 5H2O % ≥ |
99.0 |
|
Cl–% ≤ |
0.02 |
| N% ≤ |
0.005 |
| Mg% ≤ |
0.001 |
|
Ca% ≤ |
0.003 |
|
Fe% ≤ |
0.0005 |
|
Pb% ≤ |
0.0005 |
| PH |
6.0-7.5 |
| Water insoluble substances %≤ |
0.005 |
Sodium Thiosulfate Pentahydrate
- Molecular formula：Na2S2O3 · 5H2O
- Molecular weight：248.19
- CAS No：10102-17-7
- Properties：Colorless monoclinic crystal, easily soluble in water, insoluble in alcohol, with strong reducibility.
- Application：Used as a photographic fixative in the photosensitive industry; Used as a dechlorination agent for pulp bleaching in the paper industry; Used as a dechlorination agent for bleached cotton fabrics in the printing and dyeing industry; Analytical chemistry is used as a reagent for color layer analysis and volumetric analysis; Used in medicine as a detergent and disinfectant. Used in the food industry as chelating agents, antioxidants, etc.
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