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Home>Products>Inorganic chemicals>Sodium metabisulfite
Sodium metabisulfite is a white or yellow crystalline powder or small crystal, with a strong SO2 odor, a specific gravity of 1.4, dissolved in water, and the aqueous solution is acidic. When it comes into contact with strong acid, SO2 is released to form the corresponding salt. If it is stored in the air for a long time, it will oxidize. Na2S2O6 is formed, so the product cannot last long. If it is above 150 degrees Celsius, SO2 will be decomposed
Used for the production of insurance powder, sulfamethoxazole metamaterial, caprolactam, as well as the purification of chloroform, phenylpropanoid sulfone, and benzaldehyde. Used as a fixative ingredient in the photographic industry. The spice industry is used to produce vanillin. Used as a preservative in the brewing industry, a rubber coagulant, and a dechlorination agent for bleached cotton fabrics. Organic intermediates, dyes, leather used as reducing agents, used in electroplating industry, wastewater treatment in oil fields, and used as mineral processing agents in mines.
Solubility: soluble in water, the aqueous solution is acidic (54g/100ml water at 20 ℃; 81.7g/100ml water at 100 ℃). Dissolved in glycerol, slightly soluble in ethanol. Relative density is 1.4. Dissolved in water and glycerol, slightly soluble in ethanol. Moisture easily decomposes, and when exposed to air, it easily oxidizes into sodium sulfate. Contact with strong acids releases sulfur dioxide and generates corresponding salts. Heat to 150 ℃ for decomposition.
| English name | Sodium metabisulfite |
| Molecular formula | Na3PO4 |
| Technical standard | GB69451-2006 |
| Product appearance | White or slightly yellow crystalline powder or small crystals |
| Product form | amorphous particle solid |
Henan Kexing Water Treatment Materials Co., Ltd.
Main categories: Poly aluminum chloride,Polyacrylamide,Poly aluminum Chloride,Sodium Acetate,Defoamer
