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04269 Sigma-Aldrich

Sodium phosphate monobasic dihydrate

meets analytical specification of Ph. Eur., BP, USP, FCC, E 339, 98-100.5% (calc. to the dried substance)

DOWNLOAD MSDS (PDF)

Synonym: Sodium dihydrogen phosphate dihydrate

  • CAS Number 13472-35-0

  • Linear Formula NaH2PO4 · 2H2O

  • Molecular Weight 156.01

  •  EC Number 231-449-2

  •  MDL number MFCD00149209

  •  PubChem Substance ID 24845709

Sodium phosphate monobasic dihydrate meets analytical specification of Ph. Eur., BP, USP, FCC, E 339, 98-100.5% (calc. to the dried substance)
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Properties

Related Categories Chemical Synthesis, Inorganic Salts, Sodium, Synthetic Reagents
assay   98-100.5% (calc. to the dried substance)
quality   meets analytical specification of Ph. Eur., BP, USP, FCC, E 339
impurities   heavy metals (as Pb), complies
  organic volatile impurities, complies
  reducing matter, complies
  related substances, complies
  residual solvents, complies
  ≤0.2% water-insoluble matter
loss   21.5-24.0% loss on drying, 130 °C
pH   4.1-5.0 (20 °C, 1%)
  4.2-4.5 (20 °C, 5%)
anion traces   chloride (Cl-): ≤50 mg/kg
  fluoride (F-): ≤10 mg/kg
  sulfate (SO42-): ≤200 mg/kg
cation traces   Al:, in accordance
  As: ≤2 mg/kg
  Ca: ≤20 mg/kg
  Ca:, in accordance
  Cd: ≤1 mg/kg
  Cu: ≤10 mg/kg
  Fe: ≤5 mg/kg
  Hg: ≤1 mg/kg
  Mg: ≤20 mg/kg
  Pb: ≤4 mg/kg
  Zn: ≤10 mg/kg
suitability   complies for appearance of solution
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