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| Crystalline sodium thiosulhate
Na2S2O3 · 5H2
GOST 244-76
- Appearance:
Colourless crystals or granules; white, yellow and pink tints are
admissable.
- Package:
Multiply polypropylene bags with polyethylene lining, weight 50 kg.
- Fields of Application:
- photographic and film industry;
- tanning industry;
- pulp and paper industry;
- chemical industry;
- light industry to bleach threads;
- pharmaceutics to produce antibiotics and to prepare nutrient medium;
- wastes teratment facilities;
- detergents production.
- Storage:
Store in protected ware-houses in a package suggested by a manufacturer.
Storage period is 1 year from the date of production.
Specifications
| Fraction of total mass, % |
|
Photo |
Tech. |
| - sodium Thiosulphate in terms of (Na2S2O3 · 5H2O) |
min |
99,0 |
98,5 |
| - substances insoluble in water |
max |
0,01 |
0,03 |
| - ferrum (Fe) |
max |
0,001 |
0,002 |
| - sulphureous sodium (Na2S) |
max |
0,001 |
0,001 |
| - calcium, Magnesium and insoluble in ammonia solution substances |
max |
0,02 |
non rated |
| pH of water solution at 20 deg.C |
max |
6,5-9,5 |
non rated |
| heavy metals (Pb) |
max |
0,001 |
non rated |
| Water solution appearance |
|
transparent, colourless |
non rated |
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Crystalline sodium thiosulhate |
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