Sodium metabisulphite extrapure 500GM Go Back

CASR

: 7681-57-4

Molecular Formula

: Na2S2O5

Molecular Weight

: 190.1
Specifications  
Description: Fine white crystalline powder.
Solubility: Freely soluble in water. Slightly soluble in alcohol.
Assay(iodometric): Min. 96.00%
pH(5% aq soln): 3.8 - 5.3
Chloride(Cl): 0.05% max
Thiosulphate(S2O3): 0.05% max
Iron(Fe): 0.001% max
Heavy metal(as Pb): 0.002% max
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