1, the pharmaceutical industry for the production of chloroform, phenylpropanone and benzaldehyde.

2, rubber industry used as a coagulant.

3, printing and dyeing industry used as cotton bleaching dechlorination agent, cotton cooking auxiliary.

4, leather industry for leather processing, can make the leather soft, full, tough, waterproof, anti-folding, wear and other properties.

5, chemical industry for the production of hydroxyvanillin, hydroxyamine hydrochloride and so on. Photosensitive industry used as developer, etc.

6, food industry used as bleach, preservative, loose agent, antioxidant, color protection and preservative. China stipulates that it can be used for preserves, cookies, sugar, rock sugar, caramel, candy, glucose, liquid glucose, bamboo shoots, mushrooms and canned mushrooms, with a maximum usage of 0.45g/kg. Residues (as S0₂) of preserves, bamboo shoots, mushrooms and canned mushrooms, grapes and black currant concentrate. ○ 5g/kg; The residual amount of biscuits, sugar, vermicelli and other varieties is less than 0.1g/kg; The residual amount of liquid glucose should not exceed 0.2g/kg.

Packaging:

The inner liner should be made of food-grade polyethylene plastic bag and the outer packing should be made of plastic woven bag, each bag weighing 25kg or 50kg net. The packaging is printed with the words "food additive sodium metabisulfite" and the "Moisture-proof and heat-proof" logo.

Storage and protection:

Should be stored in a cool, dry warehouse. The package is sealed and should prevent air oxidation. Pay attention to moisture. It should be protected from rain and sunlight during transportation. It is strictly prohibited to store and transport with acids, oxidants and harmful and toxic substances. The storage period should be six months from the date of production. Handle with care during loading and unloading to prevent the package from breaking. In case of fire, it can be put out with water and various fire extinguishers.

TestStandard:HG/T2826-2008