|Place of Origin:||Hunan|
|Model Number:||smbs -a2|
|Minimum Order Quantity:||1 metric ton|
|Price:||usd 300 per metric ton|
|Packaging Details:||25 kgs bag,1000 kgs big bag|
|Delivery Time:||5-8 days|
|Payment Terms:||T/T , L/C|
|Supply Ability:||3000 tons per month|
|Name:||Sodium Meta Bisulphite Antioxidant||Other Name:||For Seafood Sodium Pyrosulphite|
|Color:||White Or Light Gray Powder||Shelf Life:||180 Days|
|Usage:||Antioxidant||Packing:||25 Kgs Plastic Woven Bag/1000 Kgs Jumbo Bag|
sodium metabisulphite antioxidant
Sodium Metabisulfite/Sodium Meta Bisulphite
In the chemical and pharmaceutical industry, sodium metabisulfite is mainly used as reduction agent. Furthermore, it is ideal for the bleaching of vegetable fibers and textile, for the production of solutions, which are used in the developing of photos and films as well as for the treatment of tanning agents in dyeing of textiles. ChoiceChem offers different sodium metabisulfite grades, all meeting highest quality standards.
|DOT Classification:||Not a DOT controlled material|
|Packing Group:||Not applicable.|
Storage & Handing
Precautions for safe handling
Use only in well-ventilated areas. Avoid dust formation.
Protection against fire and explosion:
The substance/product is non-combustible. No special precautions necessary.
Conditions for safe storage, including any incompatibilities
Segregate from acids and acid forming substances. Segregate from oxidants.
Do not store with: Sodium nitrate, sodium nitrite, sodium sulfide
Further information on storage conditions:
Keep container tightly closed and dry; store in a cool
place. Keep container in a well-ventilated place.
Sodium Metabisulfite Food Grade Specifications
|Purity (AS Na2S2O5 )||97.0% Min||97.6%|
|Sulfur Dioxide (SO2)||65.0% Min||65.8%|
|Arsenic (As)||0.0002% Max||0.00005%|
|Heavy Metals (As Pb)||0.0005% Max||0.0003%|
|Selenium (Se)||0.0005% Max||0.00006%|
|Iron (Fe)||0.002% Max||0.001%|
|Water Insoluble||0.02% Max||0.014%|
|5. CAS No||7681-57-4|
|6. HS CODE||28321000|
|7. EINECS No||231-673-0|
► Molecular Formula: Na2S2O5
► CAS No.: 7681-57-4
► Other name: sodium metabisulphite, sodium pyrosulfite
► Physical appearance: white or slightly yellowish crystalline powder
Sodium Metabisulfite Food Grade
Application of sodium metabisulfite in food industry
Sodium Metabisulfite is widely used in food industry. Besides bleaching effect, Sodium Metabisulfite also owns the following functions:
1) Sodium Metabisulfite in food has anti-browning effects. Enzymatic browning often occurs in fruit, potato food. Sodium Metabisulfite is a kind of reducing agent, has a strong inhibitory effect on the polyphenol oxidase activity. 0.0001% of sulfur dioxide can reduce 20% of the enzyme activity, 0.001% of sulfur dioxide can completely inhibit the enzyme activity and can prevent enzymatic browning; In addition, can consume oxygen in food organization and has deoxidation effect. Furthermore, sulfite and glucose can have addition action, prevent glucose and amino acids in food ammonia reaction sugar ammonia reaction, so as to own the function of anti-browning.
2) Sodium Metabisulfite in food has antiseptic effect. Sodium Metabisulfite can play the role of acidic preservative, the undissociated sulfurous acid is considered it can inhibit yeasts, moulds and bacteria. The inhibition of undissociated sulfurous acid for colon bacillus is 1000 times stronger than Hydrogen sulfite, 100 to 500 times stronger than beer yeast, 100 times stronger than leaf mold. Sulfur dioxide in the acid has the most powerful anti microorganism effects.
3) Sodium Metabisulfite in food has loosen machine effect, Sodium Metabisulfite can be used as the constituent of loosen machine.
4) Sodium Metabisulfite in food has oxidation resistance effect. Sodium Metabisulfite has distinctive resistance effect. Sulfurous acid is strong reducing agent, it can consume the oxygen in organization of fruits and vegetables, inhibit the activity of inhibit the activity of oxidizing enzyme, it is effective to prevent oxidation and breaking of vitamin C in fruits and vegetables.
The mechanism Sodium Metabisulfite effects: Decolorizers can be divided into two types by its function: oxidation type bleaching agent & reducing type bleaching agent. Sodium Metabisulfite belongs to reducing type bleaching agent.
Sodium Metabisulfite effects decoloring function by pigment reducing action, so as to achieve the purpose of bleaching. The colors of most organics are produced by chromophore its molecules contains. All of chromophore contains unsaturated bood, reduction bleaching agents release hydrogen atoms, it can make unsaturated bood in chromophore become single bond, so organics loses color. The browning of some foods is caused by existing of ferric ion, to add reduction bleaching agents can make ferric ion become two valence iron ion, prevent browning of food.
Sodium Metabisulfite effects fading function by addition reaction of sulfite. So as to achieve the purpose of bleaching. Sodium Metabisulfite can contact glycosides and carbohydrates to make addition reaction to bleach and fade. This action is reversible, sulphurous acid can be removed by heating or acid treatment, to make anthocyanin regenerate and resume the original red.
Sodium Metabisulfite Products
Sodium Metabisulfite Function
►Nutrient Retention Agent
►Flour dough improver
Contact Person: Ms.xie