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Sodium Metabisulphite 97%Min Food Grade (SMBS, Na2S2O5, CAS No.: 7681 -57-4) Smbs Price

China Sodium Metabisulphite 97%Min Food Grade (SMBS, Na2S2O5, CAS No.: 7681-57-4) Smbs Price, Find details about China Sodium Metabisulphite, Sodium Metabisulfite Price from Sodium Metabisulphite 97%Min Food Grade (SMBS, Na2S2O5, CAS No.: 7681-57-4) Smbs Price

Grade Standard
Food Grade, Industrial Grade
Other Name
Sodium Pyrosulfite
Transport Package
25kgs/Bag, 27 Tons/20′ FCL Without Pallet
Specification
Size Customized
Origin
China
Grade Standard
Food Grade, Industrial Grade
Other Name
Sodium Pyrosulfite
Transport Package
25kgs/Bag, 27 Tons/20′ FCL Without Pallet
Specification
Size Customized
Origin
China

Sodium Metabisulphite 97%min food grade(SMBS, Na2S2O5, CAS No.:7681-57-4 ) SMBS price

Product Description

  

Sodium metabisulfite is a white or yellow crystalline powder or small crystal with a strong SO2 odor, a specific gravity of 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. When it is left in the air, it oxidizes. It is Na2S2O6, so the product cannot be stored for a long time. Above 150 degrees Celsius, SO2 is decomposed.

 

Usage:

Chemical industry
It is used for the production of insurance powder, sulfamethazine, analgin, caprolactam, etc., as well as the purification of phenylpropane sulfone and benzaldehyde. The photographic industry is used as a fixative for the fixer. The perfume industry is used to produce vanillin. Used as a preservative for brewing industry, a rubber coagulant and a bleaching agent for cotton bleaching. Organic intermediates, dyes, and tanning are used as reducing agents for electroplating, wastewater treatment in oil fields, and as a mineralizer for mines.
industry
It is used in printing and dyeing, organic synthesis, printing, tanning, pharmaceutical and other departments; as a preservative, bleaching agent and loosening agent in food processing.
Used as a chemical reagent
(Printing and dyeing, photography, etc.), used as bleach mordant, reducing agent rubber coagulant, also used in organic synthetic pharmaceuticals and spices.


 

INDEX OF SODIUM METABISULFITE

CONTENT

FOOD GRADE

INDUSTRIAL GRADE

PURITY (AS NA2S2O5)

97%MIN

96%MIN

SO2

65.0%MIN

65%MIN

AS

0.0002% MAX

-

HEAVY METALS (AS Pb)

0.0005% MAX

-

SE

0.0005% MAX

-

IRON (Fe)

0.001% MAX

0.002% MAX

WATER TREATMENT

0.02% MAX

0.05% MAX

PH VALUE

4.0-4.8

4.0-4.8

PURITY (AS NA2S2O5)

97% MIN

96% MIN


Sodium Metabisulphite 97%Min Food Grade (SMBS, Na2S2O5, CAS No.: 7681-57-4) Smbs Price

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