| Customization: | Available |
|---|---|
| CAS No.: | 7681-57-4 |
| Formula: | Na2s2o5 |
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High-quality Chinese Sodium Pyrosulfite CAS 7681-57-4 powder for sale with insurance. From Guangzhou Zhifan Chemical Co., Ltd., a trusted Chinese chemical supplier.
Sodium metabisulfite (Na2S2O5) is a versatile inorganic compound available in white or yellow crystal form with a distinctive pungent smell. It is easily soluble in water, resulting in an acidic aqueous solution. When exposed to strong acids, it releases sulfur dioxide and forms corresponding salts. However, prolonged exposure to air leads to oxidation into sodium sulfate, limiting its long-term storage capabilities.
At Guangzhou Zhifan Chemical Co., Ltd., we provide high-quality sodium metabisulfite that meets industry standards for various applications.
| Item | Food Grade | Industry Grade |
| Purity ( As Na2S2O5) | 98.0% min | 96.0% min |
| Sulfur Dioxide( SO2) | 65.0% min | 65.0% min |
| Arsenic ( As ) | 0.0002% max | - |
| Heavy metals ( As Pb ) | 0.0005% max | - |
| Selenium (Se ) | 0.0005% max | - |
| Iron (Fe) | 0.001% max | 0.002% max |
| Water insoluble | 0.02% max | 0.05% max |
| PH value : | 4.0-4.8 | 4.0-4.8 |
| Remark : | Conformed with FCCV and E223 Standard | |
Product Description:
Guangzhou Zhifan Chemical Co., Ltd. offers a versatile chemical compound that finds applications in various industries. Our product is utilized in the production of insurance powder, sulfamethazine, metamizole, caprolactam, and more. It is also used for purifying ***, phenylpropyl sulfone, and benzaldehyde. In the photographic industry, it serves as an ingredient in fixatives, while in the spice industry, it aids in vanillin production. Additionally, it acts as a preservative in brewing, a rubber coagulant, and a dechlorinating agent post-cotton cloth bleaching. This compound is an organic intermediate, used in printing, dyeing, and tanning processes. It also functions as a reducing agent and assists in wastewater treatment in electroplating, oil fields, and mineral processing. Furthermore, it serves as preservatives, bleaching agents, and loosening agents in food processing.
Warm reminder:
For more information, please contact Guangzhou Zhifan Chemical Co., Ltd.
Safe Dosage: The recommended dosage of sodium metabisulfite is 10-1000mg/kg to prevent harmful effects on the human body.
Protective Measures: Wear protective equipment like gloves, masks, and goggles during operation to avoid direct contact.
Avoid Mixing: Do not mix with foods or chemicals rich in vitamin C to preserve nutritional content.
Storage Conditions: Store in a dry, ventilated, and cool place. Keep sealed to prevent moisture absorption and caking.
Avoid Long-Term Storage: Due to potential deterioration, long-term storage is not recommended.
For more information, please contact Guangzhou Zhifan Chemical Co., Ltd.
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