Sodium metabisulfite is divided into industrial grade, food grade, high purity, refined grade, etc. by application. Different levels of sodium metabisulfite have different standards, and it plays an important role in the food industry, industry, and medicine.
Food Industry: used as a bleaching agent, preservative, relaxing agent, antioxidant, color protector, and freshness preservative.
Health care and Pharmaceutical: pharmaceutical industry for the production of chloroform, benzene propyl sulfone, and benzaldehyde.
Industrial:
- used as a coagulant in the rubber industry;
- used as a dechlorinating agent in the printing and dyeing industry after bleaching cotton fabric and as a cooking auxiliary in the cotton fabric;
- used in the leather industry for leather processing, which can make leather soft, plump, tough, waterproof, folding resistant and wear-resistant;
- used in the chemical industry for producing hydroxyvanillin and hydroxylamine hydrochloride;
- used as a developer in the photographic industry;
- used in wastewater treatment in the oil field and as a mineral processing agent in mine.
