Sodium Metabisulfite

 

CAS No. : 7681-57-4

Packaging: 25kg/ White Bag

Shelf Life: 24 Months

Product Application

Sodium metabisulfite is an inorganic compound.

It is a white crystal with a pungent odor, soluble in water, and has strong antioxidant capacity.

After oxidation, it will produce a certain amount of sulfur dioxide, which plays a disinfecting and antibacterial role.

Sodium metabisulfite is often used in the production of insurance powder and can also purify harmful gases such as chloroform and benzaldehyde.

1. Used in the chemical industry to produce hydroxyvanillin, hydroxylamine hydrochloride, etc.

2. Used as chromatographic analysis reagent.

3. In the photographic industry, Sodium Metabisulfite is used as an ingredient in fixatives.

4. Used in the fragrance industry to produce vanillin.

5. Used as bleaching agent in paper industry.

6. Used as coagulant in rubber industry.

7. In the printing and dyeing industry, it is used as a dechlorination agent and cotton scouring agent after bleaching cotton.

8. Used in the tanning industry to treat leather, making the leather soft, plump, tough, waterproof, anti-bending, and wear-resistant.

9. Used as an antioxidant and preservative in cosmetics and skin care products to prevent and delay product deterioration caused by oxidation reactions.

10. Used as reducing agent in water treatment. Sodium metabisulfite and sodium sulfide are used for electroplating wastewater treatment. For example, when treating wastewater containing hexavalent chromium, sodium metabisulfite can be added first. After sufficient reduction reaction, the alkali is adjusted and polyaluminum chloride or polymeric ferric sulfate flocculant is added. Finally, sodium sulfide is added to remove unfinished precipitation of heavy metals.

11. Mine beneficiation agent. Sodium metabisulfite is an agent that reduces the floatability of minerals. Sodium Metabisulfite can form a hydrophilic film on the surface of mineral particles and form a colloidal adsorption film, thereby preventing the collector from interacting with the mineral surface.

12. It is used in the construction industry to make concrete water-reducing agents, which play an early strength role in concrete, but the dosage cannot exceed 0.1%-0.3%. If too much is added, the later strength of the concrete will be affected.

13. Used as a feed additive as a preservative and antifungal agent.

14. Pharmaceutical industry

①. Used to produce chloroform, phenylpropyl sulfone and benzaldehyde.

②. Add sodium metabisulfite as an antioxidant to injection preparations. Sodium metabisulfite has high solubility in water and its aqueous solution is acidic. It is mainly used as an antioxidant for acidic drugs.

③. Because it is a reducing agent itself, when it exists with drugs, sodium metabisulfite is first oxidized when exposed to oxygen, which plays a protective role in the easily oxidized drug ingredients, thereby ensuring the stability of the drug preparation.

15. Used in the production of insurance powder, sulfamethazine, metamizole, caprolactam, etc.

1. Operation precautions

● Close operation and enhance ventilation. Operators must undergo special training and strictly abide by operating procedures.

● It is recommended that operators wear self-priming filter dust masks, chemical safety glasses, anti-toxic substance penetration overalls, and rubber gloves.

● Avoid dust generation. Avoid contact with oxidants and acids.

● When handling, load and unload with care to prevent damage to packaging and containers.

● Equipped with leakage emergency treatment equipment. Empty containers may be harmful residues.

2. Storage precautions

● Sodium Metabisulfite should be store in a cool, dry, well-ventilated warehouse.

● Keep away from fire and heat sources. Keep container tightly sealed.

● They should be stored separately from oxidants, acids, and food chemicals, and avoid mixed storage.

● It should not be stored for a long time to avoid deterioration.

● Suitable materials should be available in the storage area to contain spills.

3. Packaging matters

● Sodium metabisulfite is packed in plastic woven bags or barrels, lined with plastic bags, net weight 25 or 50kg;

● This product should be transported and stored to prevent damage, moisture, and heat deterioration. It is strictly prohibited to coexist with oxidants and acids;

● This product has a storage period of 6 months from the date of production.

● Packaging is 25 kg net weight inner plastic outer woven bag or 1100 kg net weight packaging bag.