Synonyms ：Sodium sulfite；disodiumsulfite；natriumsulfurosum；anhydroussodiumsulfite；
CAS NO. : 7757-83-7
EINECS : 231-821-4
Molecular formula : Na₂O₃S
Density : 2.63 g/cm3
Molar weight: 126.04
Melting Point : 500 °C
Properties : colorless monoclinic crystals. Soluble in water, its aqueous solution is alkaline reaction. Insoluble in ethanol. In air stroke and oxidation to sodium sulfate.
ltem | Index | ||
Superior quality | First class | Qualified | |
Sodium sulfite(Na₂SO₃),%≥ | 98 | 97 | 96 |
lron(Fe),%≤ | 0.003 | 0.003 | 0.005 |
Water-insoluble,%≤ | 0.01 | 0.02 | 0.03 |
Free alkali(Na₂SO₃),%≤ | 0.001 | 0.1 | 0.4 |
Sodium sulfate(Na₂SO₃),%≤ | 1.2 | 2.5 | 2.5 |
Sodium chloride(NaCl),%≤ | 0.003 | 0.1 | 0.1 |
Used as a flotation agent for the reduction of gold and as non-ferrous metal ores.
As a laundry detergent and bleach, it prevents local oxidation of cotton fibers and improves whiteness.
As a reducing agent and antioxidant, it is an intermediate in the production of drugs.
It is used in the production of powder concrete admixtures and cement process admixtures.
As a dechlorinating agent and bleaching agent, it stabilizes chemical fibers.
Choose a dry, cool, and well-ventilated place, avoiding direct sunlight and high temperatures.
25/1000kg net PP/PE bags or as customer required.
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In China, we have established a strong business foundation and have set up office in Shanghai, focusing on providing customers with supply chain solutions for specialty chemicals as well as international sourcing and distribution services.