Best Quality Na2S2O5 White Powder 7681-57-4 SMBS Sodium Metabisulphite
Sodium metabisulfite is a common sulfite that appears as a colorless, monoclinic crystal or powder. Has a strong SO2 odor, with a specific gravity of 1.4, easily soluble in water. It is a common industrial raw material in the chemical industry. Sodium metabisulfite can be used in various industries, including pharmaceuticals, rubber, printing and dyeing, leather making, chemical, photosensitive, and food industries.
Product specifications of Sodium Pyrosulfite
Chemical name | Sodium Pyrosulfite |
Common name | Sodium metabisulfite |
Chemical formula | Na2S2O4 |
Molecular weight | 190.107 |
CAS NO. | 7681-57-4 |
Grade | Food Grade |
Packaging specifications | Plastic woven sack，25KG |
Content | 96.50% |
Executive standards | GB1886.7-2015 |
Producer | China Hunan |
Quality guarantee period | 12 months |
Product technical indicators of Sodium Pyrosulfite
Item | Inspection results |
Character | White crystalline powder |
Content (calculated by Na2S2O4),% | 96.6 |
Iron (FE),% | 0.001 |
Clarity | Pass inspection |
Arsenic (as),mg/kg | 0.01 |
Heavy metal (calculated by Pb), mg/kg | 0.01 |
Application of the product
1.Used as a coagulantin the rubber industry
2.Used as a dechlorinationagent for cotton fabricbleaching in the printingand dyeing industry.
3.The photosensitive industry is used as a developer.
4.The leather industry isused for leatherprocessing
Storage and transportation instructions
1. Sodium metabisulfite products should be stored in a cool and dry warehouse.
2. The packaging is sealed and should prevent air oxidation and moisture.
3.During transportation and storage, it should be protected from heat, damage, moisture, and deterioration.
4.From the date of production, the storage period of this product is 12 months.
5. It is strictly prohibited to store and transport with acids, oxidants, and harmful toxic ubstances.
