Chemical Characteristics of Sodium Metabisulfite In Industry
Sodium Metabisulfite
Sodium Metabisulfite or sodium pyrosulfite (IUPAC spelling; Br. E. sodium metabisulphite or sodium pyrosulphite) is an inorganic compound of chemical formula Na2S2O5. The substance is sometimes referred to as disodium metabisulfite. It is used as a disinfectant, antioxidant and preservative agent.
Product Informations:
CAS No. | 7681-57-4 |
EINECE | 231-673-0 |
HS CODE | 2832100000 |
MOLECULAR FORMULA | Na2S2O5 |
Specifications:
Industrail Grade
Items | Specifications | Typical Analysis | |
Na2S2O5 | (%) | 96.5 Min. | 96.83 |
Fe | (%) | 0.003 Max | 0.0006 |
As | (ppm) | 1.0 Max | 0.8 |
Heavy Metal(as Pb) | (ppm) | 5.0 Max | 2.0 |
Technical Specification
Tests | Specification |
Appearance | White free-flowing Crystal Powder |
Purity (Na2S2O5) | 97% min |
Iron (Fe) | 0.003% min |
Heavy Metal (Pb) | 5 ppm max |
Arsenic (As) | 1 ppm max |
Water Insoluble | 0.05% max |
PH Value | 4.0-4.6 |
Packing
25kgs/PP PE BAG
Storage and Transportation
kept in a light-proof,well-colsed,dry and cool place.