Industrial grade sodium bisulfite manufacturers to tell you about the use of sodium metabisulfite some knowledge

　　Industrial grade sodium bisulfiteManufacturer: use of sodium metabisulfite

Sodium metabisulfite is white or yellow crystalline powder or small crystals with strong SO2 odor and specific gravity of 1.4. It is soluble in water and acidic in aqueous solution. When in contact with strong acid, it releases SO2 and generates corresponding salts. It will not last long. Sodium metabisulfite can be divided into industrial grade sodium metabisulfite and food grade sodium metabisulfite. Its main uses are as follows:

1. Industrial grade sodium metabisulfite:

It can be used for leather processing in leather tanning to make the leather soft and tough, waterproof, anti-bending, and wear-resistant.

Sodium metabisulfite for printing and dyeing can be used as a deoxidizer and scouring aid for cotton after bleaching.

It is also used as a fixing agent in the photographic industry, oil field wastewater treatment, chromatographic analysis reagent and mine beneficiation reagent.

2. Food grade sodium metabisulfite:

Can be used as a bleaching agent in flour, used to make cakes, steamed bread and other foods. Industrial grade sodium bisulfite

It can be used in the production of bread, biscuits and other foods to make it soft and taste better.

Add it to fruit juices, preserves and canned foods to extend the shelf life and sterilize. Industrial grade sodium bisulfite

It has a good antioxidant effect on seafood, fruits and vegetables.

　　Industrial grade sodium bisulfiteManufacturer: sodium metabisulfite treatment of industrial wastewater

Sodium metabisulfite used in wastewater treatment is a white or yellowish powder, which can precipitate sulfide with heavy metal ions in wastewater under alkaline conditions to achieve the purpose of removal. Let us know about sodium metabisulfite treatment of industrial wastewater Methods:

1. Sodium metabisulfite is a reducing agent, which is used to treat chromium-containing wastewater in sewage treatment.

2. Chromium-containing wastewater must be treated separately according to national standards and cannot be discharged into the comprehensive pool. The concentration of hexavalent chromium shall not be higher than 0.1.

3. Put sodium metabisulfite in the raw water of chromium-containing wastewater to reduce hexavalent chromium to trivalent chromium, and then precipitate. Industrial grade sodium bisulfite

Sodium metabisulfite is generally used for wastewater treatment in the electroplating industry. Due to the different amount of wastewater and water quality generated by the wastewater treatment industry, two or more agents are generally used for treatment. The dosing sequence of the agents can be determined through experiments. More wastewater treatment chemicals, such as polymeric ferric sulfate, are available.

Industrial grade sodium bisulfite manufacturers: sodium metabisulfite can not be long-term storage reasons:

In addition to being used as a food preservative and bleaching agent, sodium metabisulfite is also widely used in other industries. Sodium metabisulfite can also be used in printing and dyeing, organic synthesis, printing, leather making, pharmaceutical and other industries. Sodium metabisulfite products are widely used, and the purchase volume of each batch of enterprises is also large. But here, as a manufacturer of sodium metabisulfite, we remind you that sodium metabisulfite products cannot last long.

Sodium metabisulfite products should be stored in a cool and dry warehouse. The packaging should prevent air oxidation and moisture. Transportation and storage should avoid damage, moisture and heat deterioration. The shelf life of this product is 6 months from the date of production. It is strictly prohibited to store and transport together with acids, oxidants and harmful and toxic substances.

Industrial grade sodium bisulfite manufacturers Xiaobian introduced here today, if you need the purchase of the above products, you can consult our manufacturers.