Sodium Metabisulphite is a powerful reducing agent and antioxidant widely used in food preservation, water treatment, leather, and photographic and chemical processes. In food and beverage applications (appropriate grades), it acts as an antimicrobial and colour‑protecting additive, while in industrial uses, it removes excess chlorine and dissolved oxygen.
Chinese‑origin material offers strong SO₂‑releasing capacity and consistent quality, making it a reliable choice across diverse sectors from pharma intermediates to mining.
| Sr. No. | Description | Specification |
|---|---|---|
| 1 | Purity | Typical 96–97% technical/food grade |
| 2 | Chemical Formula | Na2S2O5 |
| 3 | Form | White to slightly yellow crystalline powder |
| 4 | Country of origin | China |
| 5 | Quantities | Available in standard industrial 25kg bags |
Pungent sulphur dioxide odour when moistened.
Readily soluble in water, giving acidic, reducing solutions.
Decomposes slowly on exposure to air and moisture, releasing SO₂.
Preservative and antioxidant in food and beverages (grade‑specific, within legal limits).
Dechlorination agent in water treatment and process water.
Reducing agent in chemicals, leather, and photographic processes.
Can cause allergic reactions and respiratory irritation; manage workplace exposure carefully.
Avoid contact with acids, which release large amounts of SO₂ gas.
Store in cool, dry, well‑ventilated areas in tightly closed bags.
| Sr. No. | Description | Specification |
|---|---|---|
| 1 | Purity | Typical 96–97% technical/food grade |
| 2 | Chemical Formula | Na2S2O5 |
| 3 | Form | White to slightly yellow crystalline powder |
| 4 | Country of origin | China |
| 5 | Quantities | Available in standard industrial 25kg bags |
Pungent sulphur dioxide odour when moistened.
Readily soluble in water, giving acidic, reducing solutions.
Decomposes slowly on exposure to air and moisture, releasing SO₂.
Preservative and antioxidant in food and beverages (grade‑specific, within legal limits).
Dechlorination agent in water treatment and process water.
Reducing agent in chemicals, leather, and photographic processes.
Can cause allergic reactions and respiratory irritation; manage workplace exposure carefully.
Avoid contact with acids, which release large amounts of SO₂ gas.
Store in cool, dry, well‑ventilated areas in tightly closed bags.
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