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Sodium thiosulphate pentahydrate "Pure" (P) "Pro analysi" (P.A.)
Na2S2O3 · 5H2O
GOST 27068-86
- Appearance:
Water soluble colourless crystals.
- Package:
Paper or polypropylene bags with polyethylene lining, max weight 50 kg;
0,5 kg polyethylene packages.
- Fields of application:
- laboratory;
- textile industry to destroy surplus of chloric acid for cloth bleaching;
- tanning and fur industries to produce chromic leather;
- cinema/ photo industry as a fixer;
- pulp and paper industry to neutralize cellulose mass;
- wastes treatment facilities to purify noxious admixtures;
- chemical industry to produce detergents.
- Storage:
Store in protected ware-houses in a package suggested by a manufacturer.
Guarantee storage period is 1 year from the date of production.
Specifications
| Fraction of total mass,% |
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PA |
P |
| - sodium thiosulphate (Na2S2 O3 · 5H2O) |
min |
99,5-100,5 |
98,5-101,0 |
| - water insoluble substances |
max |
0,005 |
0,01 |
| - sulphates and sulphites in terms of SO4 |
max |
0,05 |
0,15 |
| - sulphides (S) |
max |
0,0002 |
0,001 |
| - calcium (Ca) |
max |
0,005 |
0,01 |
| - heavy metals (Pb) |
max |
0,001 |
0,002 |
| - ferrum (Fe) |
max |
0,001 |
0,001 |
| pH of 5% solution |
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6,5-8,0 |
6,0-8,5 |
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Sodium thiosulphate pentahydrate "Pure" (P) "Pro analysi" (P.A.) |
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