Sodium metabisulphite for analysis

Supplier: Thermo Scientific
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Synonyms: Disodium disulphite, di-Sodium disulphite, Sodium pyrosulphite, Disodiumdisulphite, Sodium disulphite

223070010 223075000 223070025
ACRO223070010EA 40.3 GBP
ACRO223070010 ACRO223075000 ACRO223070025
Sodium metabisulphite for analysis
Sodium metabisulphite
Formula: Na₂S₂O₅
MW: 190.11 g/mol
Melting Pt: 150 °C (dec.)
Density: 2,476 g/cm³ (20 °C)
Storage Temperature: Ambient
MDL Number: MFCD00167602
CAS Number: 7681-57-4
EINECS: 231-548-0
ADR: 8,III
Merck Index: 12,08731
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Specification Test Results

Appearance White Crystalline powder
Titration Iodimetric ≥58.5 % (SO2)
Arsenic (As) ≤1 ppm
Iron (Fe) ≤20 ppm
Heavy metals (as Pb) ≤10 ppm
Insoluble matter ≤0.005 %

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