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Potassium peroxodisulfate, EssentQ®, Reag. Ph Eur

- Synonyms: Potassium persulfate, Peroxydisulfuric acid dipotassium salt
- K2S2O8
- M = 270,33 g/mol
- CAS [7727-21-1]
- EINECS-No.: 231-781-8
- Solub. in water: (20 ºC): 47 g/l
- Melting point: 100 ºC (decomposes)
- LD 50 (oral, rat): 802 mg/kg
- ADR: 5.1 O2 III UN 1492
- IMDG: 5.1 III UN 1492
- IATA/ICAO: 5.1 III UN 1492
- GHS-signal word: Danger
- GHS-H sentences: H334 - H272 - H302 - H335 - H315 - H319 - H317
- GHS-P sentences: P221 - P210 - P305+P351+P338 - P370+P378 - P405 - P501a
- Tariff number: 2833 40 00 10
- Applications: analytical chemistry, laboratory reagent, cosmetics, photography.
- Appearance: White crystalline powder

SPECIFICATIONS
assay (iodometric): min. 98 %
insoluble in water: max. 0,02 %
chlorides (Cl): max. 0,005 %
copper (Cu): max. 0,005 %
heavy metals (as Pb): max. 0,005 %
iron (Fe): max. 0,002 %
lead (Pb): max. 0,005 %
manganese (Mn): max. 5 ppm
nickel (Ni): max. 0,005 %