grade

ACS reagent

Assay

≥99.0%

form

crystals

impurities

≤0.005% insolubles

pH

4.5-8.5 (25 °C, 5%)

mp

334 °C (lit.)

anion traces

chloride (Cl^-): ≤0.002%
iodate (IO₃^-): ≤5 ppm
nitrite (NO₂^-): ≤0.001
phosphate (PO₄^3-): ≤5 ppm
sulfate (SO₄^2-): ≤0.003%

cation traces

Ca: ≤0.005%
Fe: ≤3 ppm
Mg: ≤0.002%
Na: ≤0.005%
heavy metals: ≤5 ppm (by ICP-OES)

SMILES string

[K+].[O-][N+]([O-])=O

InChI

1S/K.NO3/c;2-1(3)4/q+1;-1

InChI key

FGIUAXJPYTZDNR-UHFFFAOYSA-N