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di-Potassium disulphite ≥96.0% AnalaR NORMAPUR® analytical reagent

Supplier: VWR Chemicals
Synonyms: Potassium disulphitePotassium metabisulphitePotassium pyrosulphite

Formula: K₂O₅S₂
MW: 222,33 g/mol
Melting Pt: 190 °C
Density: 1,2 g/cm³ (20 °C)
MDL Number: MFCD00167605
CAS Number: 16731-55-8
EINECS: 240-795-3
UN: 0000
Merck Index: 13,07729
Specification Test Results
Assay Min. 96.0 %
Heavy metals (as Pb) Max. 10 ppm
Insolubility in water Max. 50 ppm
Cl (Chloride) Max. 50 ppm
As (Arsenic) Max. 1 ppm
Cu (Copper) Max. 10 ppm
Fe (Iron) Max. 5 ppm
Zn (Zinc) Max. 10 ppm



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Pack type Pk VWR Catalog Number Quantity
Plastic bottle for solids 1 kg VWRC26805.291
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