Products list
- Sodium Metabisulphite
Sodium Metabisulfite Food Grade
Sodium Metabisulfite Tech Grade - Sodium Bicarbonate
Sodium Bicarbonate Food Grade
Sodium Bicarbonate Feed Grade
Sodium Bicarbonate Tech Grade
Sodium Bicarbonate BP & USP - Sodium Thiosulphate
Sodium Thiosulfate Pentahydrate
Sodium Thiosulfate Anhydrous - Sodium Sulphite
Sodium Sulfite Anhydrous
Sodium Sulfite Heptahydrate - Sodium Bisulphite
- Caustic Soda
Sodium Metabisulphite
Sodium Metabisulfite

Name: Sodium Metabisulphite
Molecular formula: Na2S2O5
CAS:7681-57-4
Molecular weight: 190.10
Synonmys:Sodium pyrosulfite; disodium disulphite; sodium pyrosulphite;disodium oxidosulfanesulfonate oxide; sodium Metabisulfite
Sodium Metabisulfite Property:
White or slightly yellow crystalline powder. Soluble in water, acidic aqueous solution. Soluble in glycerol, slightly soluble in ethanol. Easily decompose when sodium metabisulfite becomes wet , When exposed in air it will easily oxidize into sulfate. Emit sulfur dioxide and generate the corresponding salts when sodium metabisulphite contacts with acid. Sodium metabisulfite will decompose when heated to 150 ℃.
Sodium Metabisulphite can be divided into third categories according to its use:sodium metabisulfite food grade and sodium metabisulfite technology grade .
Test Items |
Quality standards |
|
Content(as Na2S2O5), % |
96.5 min |
97 min |
Content(as SO2), % |
65.0 min |
65.0 min |
Iron (Fe), % |
0.003 max |
0.003 max |
Clarity, % |
A little turbid |
A little turbid |
Heavy metal( as Pb), % |
|
0.0005 max |
Arsenic(As), % |
|
0.0001 max |
PH value |
4.0-4.6 |
4.0-4.6 |
Sodium Metabisulfide Use:
Sodium Metabisulphite in Food
Bleaching agent(such as candy, cakes, dried slices of tender bamboo shoots etc.);
Loosening agent(such as bread, biscuits etc.)preservative,disinfector(such as jam and can etc.);
Antioxidant, antistaling agent(such as seafood, fruits, vegetables etc.);
Packaging: Packed in polypropylene bag lined with polyethylene bag;
Sodium Metabisulphite in Industry
Dye printing mordant;
Textile antichlor after being bleached;
Reducing agent and sulfonating agent for chemical and medical use;
Bamboo, wood, paper fiber bleaching agent, non-ferrous metal ore dressing agent, waste water treating , rubber freezing agent;
Packing: Packed in polypropylene bag lined with polyethylene bag.
Net wt: 25, 50, 1000Kg/bag.