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1.05063 Supelco

Potassium nitrate

for analysis EMSURE® ISO,Reag. Ph Eur

Synonym: Nitric acid potassium salt, Potassium nitrate

  • CAS Number 7757-79-1

  • Empirical Formula (Hill Notation) KNO3

  • Molecular Weight 101.10

  •  MDL number MFCD00011409

  •  EC Index Number 231-818-8

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Properties

Quality Level   300
grade   Reag. Ph. Eur.
  reag. ISO
potency   3015 mg/kg LD50, oral (Rat)
pH   5.0-7.5 (20 °C, 50 g/L in H2O)
mp   334 °C
bulk density   800 kg/m3
InChI   1S/K.NO3/c;2-1(3)4/q+1;-1
InChI key   FGIUAXJPYTZDNR-UHFFFAOYSA-N
storage conditions   Store at +5°C to +30°C.

Description

Analysis Note

Assay (alkalimetric): ≥ 99.0 %
pH-value (5 %; water): 5.0 - 7.5
Chloride (Cl): ≤ 0.001 %
Iodate (IO₃): ≤ 0.0005 %
Nitrite (NO₂): ≤ 0.001 %
Phosphate (PO₄): ≤ 0.0005 %
Sulfate (SO₄): ≤ 0.003 %
Heavy metals (as Pb): ≤ 0.0005 %
Ca (Calcium): ≤ 0.001 %
Cu (Copper): ≤ 0.0001 %
Fe (Iron): ≤ 0.0003 %
Mg (Magnesium): ≤ 0.0015 %
Na (Sodium): ≤ 0.02 %
NH₄ (Ammonium): ≤ 0.001 %
Pb (Lead): ≤ 0.0001 %
Corresponds to ISO,Reag. Ph Eur

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