Sodium metabisulfite is a white or yellow crystalline powder or small crystal with a strong SO2 odor, the specific gravity is 1.4, soluble in water, and the aqueous solution is acidic. When it is in contact with a strong acid, it releases SO2 to form a corresponding salt.

Appearance :White or slightly yellow crystalline powder or small crystal

Solid content ≥97%min

So2 ≥65%min

Water insoluble matter ≤0.05%

PH value : 4-4.8

Iron（Fe）≤0.002% 

1. The industrial grade:can be used as the printing and dyeing mordant,fabric bleaching dechlorination agent.

2. It can be used as bamboo, wood, paper fiber bleach.

3. It can be used as non-ferrous metal ore dressing agent.

4. It can be used as wastewater treatment agent,rubber coagulant.

5. In The perfume industry is used as a hydrocarbon-based perfume aldehyde.

6. It can be used in the leather industry as a depilatory, softener and anti-wear agent.

7. In photosensitive industry can be used as a reducing agent for developers, a protective agent for fixing solution.

8. The food grade sodium metabisulfite can be used in food processing as the food additives. 

1. Packing:25kg/bag or 50kg/bag or 1000kg/bag

2. It should be stored in a cool,dry warehouse.The package is sealed and protected from air oxidation.

3. It is strictly forbidden to store and transport with acids,oxidants and harmful toxic substances.   

4. This product has a shelf life of 6 months from the date of production.

5. During transportation,it should be protected from exposure,rain and high temperature.The vehicle should be thoroughly cleaned after transportation.