H.S.CODE:28331900
CAS NO.:7681-57-4
Molecular formula:Na2S2O5
Property: white or light yellow crystalline powder or small crystal, with SO2 odor,Sg 1.4.
Use: Used in drug, food, ferment, rubber, textile, photo, flavor, dyes, tannage and preservativeof fruit and vegetable.
Packing: 25kgs plastic woven bags
Specification:
| Na2S2O5 (%) |
97.5MIN |
Fe(Fe)(%) |
0.003MAX |
Water insolubles(%) |
0.005MAX |
Chloride(Cl)(%) |
0.003MAX |
Heavy metal(Pb)(%) |
0.001MAX |
Arsenic(As)(%) |
0.0001MAX |
PH value |
3.2-4.6 |
|
