Sodium metabisulfite is dual-purpose reducing preservative and antioxidant for food and industry, with excellent bleaching, deoxidation, anticorrosion and bacteriostatic effects, widely used in food preservation, textile bleaching, water treatment and mineral dressing.
| Chemical Name | Sodium Metabisulfite |
| Chemical Formula | Na₂S₂O₅ |
| CAS No. | 7681-57-4 |
| Appearance | White crystalline powder or particles |
| Melting Point | 150℃ (decompose) |
| Density(20℃) | 1.48g/cm³ |
| Solubility | Easily soluble in water, aqueous solution acidic |
| Stability | Easy to decompose when damp, oxidized and invalid in air, release sulfur dioxide with acid, strong reducibility |
Used as fruit and vegetable preservative, dried fruit color protection antioxidant, textile reducing bleaching agent, circulating water deoxidizer, leather antiseptic auxiliary, mineral flotation agent, industrial reducing agent.
Store in sealed moisture-proof packages in dry cool warehouse, isolate air to prevent oxidation, keep away from acidic raw materials, follow first-in first-out principle, avoid open-air storage.
We mainly supply agricultural fertilizers including urea, potassium sulfate, ammonium chloride and water-soluble fertilizer materials; as well as industrial chemical raw materials such as calcium chloride, sodium bicarbonate and phosphate products.
Yes. We can provide batch COA, MSDS, certificate of origin and other full set of export documents to meet customs clearance requirements worldwide.
Sure. We offer agricultural grade and industrial grade products. Customized purity, particle size and packaging are all available as customers' demands.
Sample order is acceptable. For bulk orders, goods can be delivered within 3-7 days for in-stock items. We also support long-term bulk order production arrangement.
We offer exclusive one-on-one pre-sales and after-sales responses throughout the process, along with customized supporting solutions, ensuring high efficiency, peace of mind, and reliable and stable delivery.
With 26 years of in-depth experience in the chemical industry, we have a well-established supply chain system, sufficient production capacity reserves, and the ability to provide large-scale supplies and continuous delivery.
We adhere to research and development innovation and strict quality control. Our formula and process are mature and stable, and our products feature high purity, stable performance, and are suitable for high-end application requirements in multiple industries.
If you have any questions, concerns, or need assistance, please feel free to contact us via phone, email, or online customer service at any time, and we will provide you with support and answers as soon as possible.
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