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1.05065 Supelco

Potassium nitrate

99.995 Suprapur®

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

Related Categories Analytical Reagents, Analytical/Chromatography, High Purity Reagents for Trace Analysis, High Purity Salts for Trace Analysis, Reagents for Inorganic Trace Analysis,
Quality Level   100
grade   for inorganic trace analysis
assay   99.995%
potency   3015 mg/kg LD50, oral (Rat)
pH   5.0-7.5 (20 °C, 50 g/L in H2O)
mp   334 °C
solubility   320 g/L
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

Purity (metallic): ≥ 99.995 %
Assay (acidimetric): ≥ 99.0 %
Chloride (Cl): ≤ 5 ppm
Sulfate (SO₄): ≤ 30 ppm
Al (Aluminium): ≤ 0.05 ppm
Ba (Barium): ≤ 1.0 ppm
Ca (Calcium): ≤ 0.1 ppm
Cd (Cadmium): ≤ 0.005 ppm
Ce (Cerium): ≤ 0.005 ppm
Co (Cobalt): ≤ 0.005 ppm
Cr (Chromium): ≤ 0.005 ppm
Cs (Cesium): ≤ 5 ppm
Cu (Copper): ≤ 0.005 ppm
Eu (Europium): ≤ 0.005 ppm
Fe (Iron): ≤ 0.05 ppm
Hg (Mercury): ≤ 0.01 ppm
La (Lanthanum): ≤ 0.005 ppm
Li (Lithium): ≤ 0.2 ppm
Mn (Manganese): ≤ 0.005 ppm
Mg (Magnesium): ≤ 0.10 ppm
Na (Sodium): ≤ 20 ppm
Ni (Nickel): ≤ 0.005 ppm
Pb (Lead): ≤ 0.005 ppm
Rb (Rubidium): ≤ 30 ppm
Sc (Scandium): ≤ 0.005 ppm
Sm (Samarium): ≤ 0.005 ppm
Sr (Strontium): ≤ 0.10 ppm
Tl (Thallium): ≤ 0.005 ppm
Y (Yttrium): ≤ 0.005 ppm
Yb (Ytterbium): ≤ 0.005 ppm
Zn (Zinc): ≤ 0.010 ppm

Legal Information

SUPRAPUR is a registered trademark of Merck KGaA, Darmstadt, Germany

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