Industrial grade sodium metabisulfite has a wide range of uses. Let's follow Shanghai Huerbang to learn more.

1. Can be used to produce insurance powder;

2. Industrial grade can be used in the pharmaceutical industry for the purification of chloroform, phenylpropylsulfone, and benzaldehyde; Used as a coagulant in the rubber industry; Used in the printing and dyeing industry as a dechlorination agent, scouring agent, and mordant for cotton fabric after bleaching;

3. As a developer in the photography industry;

4. The chemical industry is used to produce hydroxyvanillin, hydroxylamine hydrochloride, etc;

5. The leather industry is used for leather processing to make leather soft, plump, and tough, with waterproof, anti bending, and wear-resistant properties;

6. The sewage treatment industry serves as a reducing agent, such as in the treatment of wastewater containing hexavalent chromium, while the sodium metabisulfite/air method can be used to treat cyanide containing wastewater for wastewater treatment in electroplating, oil fields, and other industries.

7. Industrial grade sodium metabisulfite can be used as a mineral processing agent;

Food grade sodium metabisulfite is a versatile food additive that, in addition to bleaching, also has the following functions:

1. Anti browning effect. Enzymatic browning often occurs in fruits and potatoes. Food grade sodium metabisulfite is a reducing agent that has a strong inhibitory effect on the activity of polyphenol oxidase.

0.0001% sulfur dioxide can reduce enzyme activity by 20%, while 0.001% sulfur dioxide can effectively inhibit enzyme activity and reduce enzyme browning. In addition, it can consume oxygen in food tissues, play a role in clearing oxygen, that is, sulfite can react with glucose, reduce the reaction between glucose and amino acids in food, and thus prevent browning.

2. Antioxidant effects. Sulfite has a good oxidizing effect. Sulfite is a strong reducing agent that can consume oxygen in fruits and vegetables, inhibit the activity of oxidase, and is more effective in reducing the oxidation and destruction of vitamin C in fruits and vegetables.

3. The function of a soil loosening machine can be used as a component of the soil loosening machine.

4. For corrosion prevention, sulfite can play a role in preventing corrosion. Insoluble sulfite is believed to inhibit yeast, mold, and bacteria. According to reports, the inhibitory effect of insoluble sulfites on Escherichia coli is 1000 times that of sodium bisulfate. The strength of beer yeast is 100-500 times higher than that of mold, and it is better to carry microorganisms when sulfur dioxide is acidic.

The mechanism of action of food grade sodium metabisulfite:

Bleach can be divided into two categories based on their mode of action: oxidizing bleach and reducing bleach. Sodium metabisulfite is a reducing bleach.