Smbs, Na2s2o5, CAS No.: 7681 -57-4 Sodium Metabisulphite 97%Min

China Smbs, Na2s2o5, CAS No.: 7681-57-4 Sodium Metabisulphite 97%Min, Find details about China Sodium Metabisulphite 97%Min, Smbs Na2s2o5 from Smbs, Na2s2o5, CAS No.: 7681-57-4 Sodium Metabisulphite 97%Min

Basic Info.

Model NO.

Sodium Metabisulphite 97%min

Appearance

Powder

Grade Standard

Industrial Grade

Storage

Cold Dry Place

Shelf Life

24 Months

Trademark

Union Alkalies

Transport Package

25kg PP+PE Bag

Specification

99%

Origin

China

HS Code

283210000

Model NO.

Sodium Metabisulphite 97%min

Appearance

Powder

Grade Standard

Industrial Grade

Storage

Cold Dry Place

Shelf Life

24 Months

Trademark

Union Alkalies

Transport Package

25kg PP+PE Bag

Specification

99%

Origin

China

HS Code

283210000

Product Desciption

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%
SO2 % ≥	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.

Smbs, Na2s2o5, CAS No.: 7681-57-4 Sodium Metabisulphite 97%Min