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

Supplier: VWR Chemicals


(Dipotassium disulphite Potassium metabisulphite Potassium pyrosulphite Potassium disulphite)
R: 31-37-41
S: 26-39
H: H335 H318
P: P280 P304+P340 P305+P351+P338 P309+P310
Danger
 
  Formula: K₂SO₅
MW: 222,33 g/mol
Melting Pt: 190 °C
Density: 1,2 g/cm³ (20 °C)
CAS Number: 16731-55-8
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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