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32320 Sigma-Aldrich

Sodium citrate tribasic dihydrate

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.5%

Synonym: Citric acid trisodium salt dihydrate, Trisodium citrate dihydrate

  • CAS Number 6132-04-3

  • Linear Formula HOC(COONa)(CH2COONa)2 · 2H2O

  • Molecular Weight 294.10

  •  Beilstein Registry Number 6104939

  •  EC Number 200-675-3

  •  MDL number MFCD00150031

  •  PubChem Substance ID 57648648

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Properties

Related Categories Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography, Essential Chemicals, Puriss p.a. ACS,
grade   ACS reagent, reag. ISO, reag. Ph. Eur.
InChI Key   NLJMYIDDQXHKNR-UHFFFAOYSA-K
grade   puriss. p.a.
assay   ≥99.5%
impurities   ≤0.001% total nitrogen (N)
  11-13% water (Karl Fischer)
pH   7.5-9.0 (20 °C, 5%)
mp   >300 °C(lit.)
anion traces   chloride (Cl-): ≤10 mg/kg
  oxalate (C2O42-): ≤200 mg/kg
  phosphate (PO43-): ≤20 mg/kg
  sulfate (SO42-): ≤10 mg/kg
cation traces   Ca: ≤50 mg/kg
  Cu: ≤5 mg/kg
  Fe: ≤5 mg/kg
  Pb: ≤2 mg/kg
  Zn: ≤5 mg/kg
suitability   complies for reaction against H2SO4

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