Sodium Metabisulfite

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CAS NO.： 7681-57-4

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Specification： ≥96.5%; ≥95%

Documentation：

COA

COA2

Lead Time： 14-30 days

Max Capacity： -

Packing： 50KG/Woven Bag

Product Detail

Properties

Sodium Metabisulfite

English Name: Sodium metabisulfite

CAS NO: 7681-57-4

Molecular Weight: 190.1065

EC NO: 231-673-0

Molecular Formula: Na₂S₂O₅

InChI: InChI=1/2Na.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2

Standard: Reagent grade

Product Description:

Property: White or yellow crystalline powder or small crystal with strong SO2 odor, specific weight is 1.4, soluble in water, its aqueous solution presents acid, gives out SO2 and generates relevant salts in contact with strong acid.

Structural Formula:

Properties

It is used as preservative, bleach and loosening agent in food processing. In industry, sodium pyrosulfite is used in printing and dyeing, organic synthesis, printing, tanning, pharmaceutical and other departments; Sodium pyrosulfite is used in the chemical and pharmaceutical industries for the production of insurance powder, sulfamethazine, analgin, caprolactam, etc., as well as the purification of chloroform, phenylpropanesulfone and benzene formaldehyde. The photographic industry is used as an ingredient for fixing agents. Perfume industry is used to produce vanillin. It is used as preservative in brewing industry, rubber coagulant and dechlorination agent after cotton bleaching. Organic intermediates, dyes and tanning are used as reducing agents, electroplating industry, oilfield wastewater treatment and mineral dressing agent in mines.

CAS No.

7681-57-4

Formula

Na2O5S2

Molecular Mass

190.10700

Exact Mass

189.89800

PSA

124.92000

Logp

0.27220