HomeAll CategoriesLaboratory ChemicalsPharmacopoeia-Grade ChemicalsPotassium disulfite, Pharmpur®, Ph Eur, NF
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ScharlauPharmacopoeia-Grade Chemicals

Potassium disulfite, Pharmpur®, Ph Eur, NF

CAS number
16731-55-8
Manufacturer product code
PO0242

Scharlau PO02421000: Potassium disulfite, Pharmpur®, Ph Eur, NF. Laboratory testing and preparation where the stated pharmacopoeial specification is required.

Applications
  • Laboratory testing and preparation where the stated pharmacopoeial specification is required.
Packaging options
PO0242005P — 5 kg — Plastic containerPO02421000 — 1 kg — Plastic bottle

Product specifications and documentation are confirmed against the requested reference before quotation.

Product information

Overview

Scharlau PO02421000: Potassium disulfite, Pharmpur®, Ph Eur, NF. CAS 16731-55-8. M = 222,33 g/mol; Melting point: 190 ºC; assay (iodometric): 95,0 - 101,0 %; assay (iodometric, as SO2): 51,8 - 57,6 %. Laboratory testing and preparation where the stated pharmacopoeial specification is required.

  • CAS number: 16731-55-8
  • Pack quantity / capacity: 1
  • Measurement unit: Kilogram (kg)
  • Package type: Plastic bottle
Packaging and references
  • 1 kg · Plastic bottle
  • PO0242005P — 5 kg — Plastic container
  • PO02421000 — 1 kg — Plastic bottle
Selected specifications
  • Synonyms: Potassium metabisulfite, Potassium pyrosulfite
  • K2S2O5
  • M = 222,33 g/mol
  • CAS [16731-55-8]
  • EINECS-No.: 240-795-3
  • Solub. in water: (20 ºC): 450 g/l
  • Melting point: 190 ºC
  • LD 50 (oral, rat): 2300 mg/kg
  • GHS-signal word: Danger
  • GHS-H sentences: H318 - H335 - EUH031
  • GHS-P sentences: P261 - P280 - P305+P351+P338 - P310 - P405 - P501a
  • Tariff number: 2832 20 00 00
  • SPECIFICATIONS
  • assay (iodometric): 95,0 - 101,0 %
  • assay (iodometric, as SO2): 51,8 - 57,6 %
  • identification B (EP): passes test
  • Identification C (EP): passes test
  • Identification potassium USP: passes test
  • Identification sulfites (USP): passes test
  • appearance of solution: clear and colourless
  • pH (5 %, H2O): 3,0 - 4,5
  • thiosulfates (S2O3): passes test
  • iron (Fe): max. 10 ppm
  • zinc (Zn): max. 25 ppm
Applications
  • Laboratory testing and preparation where the stated pharmacopoeial specification is required.

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