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Shanghai Jiading Malu Chemical Co., Ltd.

70 YRS

Shanghai, China

CNY 10 Million

22644 m²

100-500 people

Main Products: Sodium Bisulfite / Sodium Metabisulfite

Shanghai, China

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Sodium metabisulfite For food grade / CAS 7681-57-4

OVERVIEW

Packaging

25 KG/Woven Bag

Lead Time

14-30 days

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DESCRIPTION

Sodium metabisulfite For food grade

Item	Chinese standard GB1893-2008	Company standard
Main content(Na₂S₂O₅)	≥96.5	≥97.5
Fe(As content Fe)	≤0.003	≤0.0015
Clarity	Pass test	Clear
Heavy metal content (Pb)	≤0.0005	≤0.0002
Arsenic content (As)	≤0.0001	≤0.0001

Typical 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

IUPAC

Sodium metabisulfite

SMILES

[O-]S(=O)S(=O)(=O)[O-].[Na+].[Na+]

Matter Classification

inorganic

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