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| Sodium pyrosulphite, technical grade
Na2S2O5
GOST 11683-76
- Appearance:
Crystalline white or light yellow powder.
- Package:
40 kg multiply (paper) or polypropylene bags with polyethylene lining.
- Fields of application:
- food industry to produce tinned/canned food;
- medicine to produce remedies;
- agriculture to treat forage grain;
- chemical industry to produce synthetic fibre, to treat wastes;
- fish industry to preserve fish, sea products;
- tanning industry;
- pharmaceutics;
- dyes production;
- machine building industry.
- Storage:
Storage period is 9 months from the date of production.
Specifications
| |
|
1st rate |
2nd rate |
| Fraction of total mass, % |
|
|
|
| - dioxide sulfur (SO2) |
min |
64,0 |
62,3 |
| - sodium pyrosulphite (Na2S2O5) |
min |
95,0 |
92,5 |
| - ferrum (Fe) |
max |
0,005 |
0,015 |
| - substances insoluble in water |
max |
0,05 |
0,1 |
| - arsenic (As) |
max |
0,0001 |
0,0001 |
| *** heavy metals (Pb) |
max |
0,002 |
- |
| *** chlorides (Cl) |
max |
0,2 |
- |
|
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Sodium pyrosulphite, technical grade |
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