white or light yellow crystalline powder.
1Chemical nameSodium Metabisulfite2Molecular formula: Na2S2O53Molecular weight: 190.104Properties:white or light yellow crystalline powder , relative density is 1.4 .5Quality standard
| Item | Standard |
| Assay ( as Na2S2O5 ) | ≥97% |
| PH value | 4.0-4.6 |
| Heavy metal (Pb) | ≤0.002% |
| As | ≤0.0002% |
| Fe | ≤0.005% |
6Packing:25kg plastic woven bag. 7Uses:It can be used as the material of medicine, or used as curing agent of rubber; It also can be used as dechlorinating agent and scouring agent of textile; It also can be used in the process of leather Moreover, it can be used as the material of fine chemicals, or used as developer; In food industry, It can be used as bleaching agent, loosening agent, antisepsis bactericide and antioxygen antistaling agent.
Sodium Metabisulfite
