| CAS No.: | 7681-57-4 |
|---|---|
| Formula: | Na2s2o5 |
| EINECS: | 231-673-0 |
| Appearance: | Powder |
| Certification: | CCIC, RoHS, ISO |
| Purity: | 90%~99% |
| Samples: |
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| Customization: |
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Audited Supplier Top-quality Sodium Pyrosulfite (CAS 7681-57-4) for printing, dyeing, and tanning from Guangzhou Zhifan Chemical Co., Ltd. Ideal for various industries.
Sodium Metabisulfite
Product Description:
Sodium metabisulfite (Na2S2O5) is a white or yellow crystal with a strong pungent smell. It is soluble in water, forming 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, making long-term storage impractical.
Company: Guangzhou Zhifan Chemical Co., Ltd.
| 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, our product serves as an essential ingredient in fixatives. Additionally, it is used in spice industry for vanillin production, brewing industry as a preservative, and as a rubber coagulant and dechlorinating agent in cotton cloth bleaching. It acts as an organic intermediate, reducing agent, and is employed in printing, dyeing, and tanning processes.
Moreover, our product is crucial for wastewater treatment in the electroplating industry, oil fields, and mineral processing in mines. It also serves as preservatives, bleaching agents, and loosening agents in food processing.
Warm reminder: Contact Guangzhou Zhifan Chemical Co., Ltd. for more information.
Safe Dosage: It is crucial to strictly control the dosage of sodium metabisulfite, typically ranging from 10-1000mg/kg to prevent any harmful effects on the human body.
Protective Measures: During operation, always wear protective equipment such as gloves, masks, and goggles to avoid direct contact with the substance.
Avoid Mixing: Do not mix sodium metabisulfite with certain foods or chemicals, especially those rich in vitamin C, to preserve the nutritional content.
Storage Conditions: Store the product in a dry, ventilated, and cool place, away from high temperatures and humidity. Ensure the container is sealed to prevent moisture absorption and caking.
Avoid Long-Term Storage: Due to its tendency to deteriorate, it is not recommended for long-term storage.
Our company, with over 15 years of experience in the chemical industry, offers the latest product consultation and market insights. We have 5,000 square meters of chemical warehouses strategically located near Guangzhou Nansha Port and Shenzhen Port for convenient international shipping. With qualifications to handle dangerous goods and quality inspection reports, you can trust the quality of our products.
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