• CAS 7681-57-4 Sodium Metabisulfite Tech Grade
  • CAS 7681-57-4 Sodium Metabisulfite Tech Grade
  • CAS 7681-57-4 Sodium Metabisulfite Tech Grade
  • CAS 7681-57-4 Sodium Metabisulfite Tech Grade
  • CAS 7681-57-4 Sodium Metabisulfite Tech Grade

CAS 7681-57-4 Sodium Metabisulfite Tech Grade

CAS No.: 7681-57-4
Formula: 2na.O5s2
EINECS: 231-673-0
Certification: CIQ, ISO, SGS
Purity: ≥99%
Type: Sodium Sulfate
Samples:
US$ 20/kg 1 kg(Min.Order)
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Basic Info.

Model NO.
tech grade
Appearance
Powder
Grade Standard
Industrial Grade
Storage
Cold Dry Place
Shelf Life
24 Months
Transport Package
25kg PP+PE Bag
Specification
99%
Trademark
Union Alkalies
Origin
China
HS Code
283210000
Production Capacity
50000mt/Year

Product Description

Products 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.

Specification : 
Appearance

White to slightly yellowish

crystialline powder

Sodium Metabisulphite (Na2S2O5) % 99%
SO% ≥ 65
Fe % ≤ 0.002
Clarity clear
Insoluble matter in nitric acid% ≤ 0.009
AS% <0.00009
Phosphoric acid test ≤ 4.2

Usage: 
Chemical industry 

It is used for the production of insurance powder, sulfamethazine, analgin, caprolactam, etc., as well as the purification of chloroform, 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.
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.

 

Package: 
25kg/bag, 1000kg/bag. 
CAS 7681-57-4 Sodium Metabisulfite Tech Grade
CAS 7681-57-4 Sodium Metabisulfite Tech Grade

CAS 7681-57-4 Sodium Metabisulfite Tech Grade


CAS 7681-57-4 Sodium Metabisulfite Tech GradeCAS 7681-57-4 Sodium Metabisulfite Tech Grade
Delivery time:
 
5-15 days after receiving payment.

 

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