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| Anhydrous sodium sulphate, ''Photographic
Na2SO3
TU 113-08-05808111-24-92
- Appearance:
White powder.
- Package:
multiply (paper) bags with polyethylene lining, or polypropylene bags with dark
polyethylene lining, net weight 50 kg.
- Fields of Application:
- tanning industry to increase chrome foundations in leather tanning;
- pharmaceutics and medicine;
- cinematographic and photographic industries to produce developers and fixers;
- textile industry to bleach cloth and to produce viscose thread;
- food industry to remove sulphur and sulphur combinations;
- to produce detergents.
- 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, % |
|
|
| - sodium Sulphite (Na2SO3) |
min |
97,5 |
| - substances insoluble in water |
max |
0,01 |
| - alkali in terms of Na2CО3 |
max |
0,08 |
| - thiosulphate (S2O3)2- |
max |
0,02 |
| - ferrum (Fe) |
max |
0,003 |
| - heavy metals (Pb) |
max |
0,0005 |
| - sodium sulphide |
|
is to be subjected
to tests |
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Anhydrous sodium sulphate, ''Photographic'' |
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