1.Product Name:Sodium metabisulfite
2.Molecular Formula Na2S2O5
3.Molecular Weight 190.10
4.CAS No 7681-57-4
5.Appearance: White or yellowish Crystal Powder
6.Synonyms: Sodium pyrosulfite; disodium disulphite; Sodium metabisulphite; Sodium disulphite; Sodium pyrosulphite; Sodium Disulfite
7.HS Code: 28311000
Sodium Metabisulfite Specification
Item Specification
Purity(As Na2S2O5) 97%Min
Sulfur Dioxide(SO2) 65%Min
Arsenic(As) 0.002%Max
Heave Metal(As Pb) 0.005%Max
Water Insoluble 0.05%Max
Iron(Fe) 0.002%Max
PH Value 4.0-4.8