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Sodium pyrosulfite anhydrous food grade
Sodium pyrosulfite anhydrous food grade
Supplier Info
[China Supplier]
Contact Person : Ms. Yuan Catherine
Tel : 86-22-58058718
Fax : 86-22-26200520
Product Detail
sodium pyrosulfite molecular formula: Na2S2O5 CAS: 7681-57-4 Appearance:White crystal powder

sodium pyrosulfite

Properties:

Sodium metabisulphite white or yellow crystalline powder or small crystallization, with strong smell, a proportion of SO2 1.4, soluble in water, become acidic aqueous solution, and acid contact is released SO2 generated corresponding salts, long for air, is oxidized to Na2S2O6, reason this product not far. Above 1500C, namely the SO2 decomposition.

Use:

Industrial used for printing and dyeing, organic synthesis, printing, the leather making, pharmaceutical and other department. In food processing of bleaching agent and antiseptic, osteoporosis agent.

Details:

Test item

Specification

Reagent grade

Pharmaceutical grade

Appearance

Conform

Conform

Assay /%

≥95.0

≥92.0

Clarify degrees test

Conform

Conform

Water insoluble /%

≤0.005

≤0.01

Chloride (Cl)/%

≤0.005

≤0.02

Arsenic  (As) /%

≤0.0001

≤0.0002

Ferric (Fe)/%

≤0.0005

≤0.002

Heavy metal (Pb)/%

≤0.0005

≤0.002

We supply reagent grade USP grade BP grade food grade. If you are interested in our products please contact me .

 

Sodium pyrosulfite anhydrous food grade

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