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32312 Sigma-Aldrich

Potassium sodium tartrate tetrahydrate

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.5% (perchloric acid titration)

Synonym: L(+)-Tartaric acid potassium Sodium salt, Rochelle salt, Seignette salt

  • CAS Number 6381-59-5

  • Linear Formula KOCOCH(OH)CH(OH)COONa · 4H2O

  • Molecular Weight 282.22

  •  Beilstein Registry Number 6113568

  •  EC Number 206-156-8

  •  MDL number MFCD00150989

  •  PubChem Substance ID 57648645

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Properties

Related Categories Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography, Essential Chemicals, O-P, Puriss p.a. ACS,
grade   ACS reagent, reag. ISO, reag. Ph. Eur.
InChI Key   VZOPRCCTKLAGPN-ZFJVMAEJSA-L
grade   puriss. p.a.
assay   ≥99.5% (perchloric acid titration)
impurities   ≤0.001% total nitrogen (N)
pH   7.0-8.5 (20 °C, 5%)
anion traces   chloride (Cl-): ≤5 mg/kg
  phosphate (PO43-): ≤10 mg/kg
  sulfate (SO42-): ≤50 mg/kg
cation traces   Ca: ≤40 mg/kg
  Cu: ≤5 mg/kg
  Fe: ≤5 mg/kg
  Pb: ≤2 mg/kg
  Zn: ≤5 mg/kg

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