Anhydrous sodium sulfite for industrial use

Uses of anhydrous sodium sulfite: bleaching agent for pulp and chemical fiber stabilizer; fabric bleaching agent; deoxidizer for dye and bleaching industry; reducing agent and sulfonating agent for chemical industry; leather manufacturing; etc.; used as dechlorination agent in printing and dyeing industry and bleach. Used for washing various cotton fabrics to prevent local oxidation of cotton fibers and affect fiber strength. Used as a developer in the photosensitive industry and as a chemical application of meta-phenylenediamine anhydrous sodium sulfite in the organic industry
1. Anhydrous sodium sulfite for film development
2. Used as a reducing agent and sulfonating agent in the chemical industry
3. Dechlorination and bleaching agents in the printing and dyeing industry
4. Chemical fiber stabilizer, etc.
Anhydrous sodium sulfite
Molecular weight: 126.04
Properties: white crystal or powder; tasteless. This product is easily soluble in water, slightly soluble in ethanol, and almost insoluble in ether.
It is soluble in water (12.54g/100ml water at 0℃, 28.3g/100ml water at 80℃), and its solubility reaches its peak at 33.4℃, about 28%. The aqueous solution is alkaline, and the pH is about 9 ~ 9.5. Slightly soluble in alcohol, insoluble in liquid chlorine and ammonia. It is easily oxidized into sodium sulfate in the air, and easily decomposed into sodium sulfide at high temperature. In order to strengthen the reducing agent, it reacts with sulfur dioxide to form sodium bisulfite, and reacts with strong acid to form the corresponding salt.