Sodium pyrosulfite is white or yellow crystalline powder or small crystals with strong SO2 odor. Specific gravity is 1.4. It is soluble in water an its solution presents acidic.
English name | Sodium Pyrosulfite |
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Molecular formula | Na2S2O5 |
Molecular weight | 190.09 |
Density | 1.48 |
Melting point | >300℃ |
Appearance and properties | White or yellowish crystalline powder or small crystals |
Incompatibility | Strong acids and strong oxidants |
CAS RN | 7681-57-4 |
EINECS No. | 231-673-0 |
Sodium pyrosulfite is white or yellow crystalline powder or small crystals with strong SO2 odor. Specific gravity is 1.4. It is soluble in water an its solution presents acidic.
Chemical industry
Sodium pyrosulfite can be used in producing sodium hydrosulfite, sulfamethazine, and metamizole sodium tablets, and in purifying caprolactam, solasulfone, and benzaldehyde.
Industry
In printing and dyeing, organic synthesis, leather, printing, pharmaceutical, and other industries.
As chemical reagent
As bleaching agent, mordant, reducing agent, rubber coagulator, and etc.
Storage
The product should be sealed and kept in shading place.
Packing
Plastic bag lined with polyethylene plastic bag, net weight is 25kg or 50kg. Keep in cool and dry warehouse.
1.Packing is coated with marks including product name, grade, net weight, and factory;
2. Sodium pyrosulfite is packed by plastic woven bag or drum, lined with plastic bag, net weight is 25 or 50kg;
3. Separate from oxidants and acids;
4. Shelf life is 6 months since the date of production.
Packing: 25kg woven bag lined with plastic or 1,100kg bag.
Packing category: Z01
Transportation
To ensure the package is complete when shipping. Separate from oxidants, acids, and edible chemicals. To protect from solarization, rain and high temperature during transportation.
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