Agency

reag. ISO
reag. Ph. Eur.

Quality Level

100

vapor pressure

1 mmHg ( 745 °C)

grade

puriss. p.a.

Assay

≥99.0%
99.0-100.5% (calc. to the dried substance)

form

crystalline

impurities

Reducing substances, complies
≤0.0005% heavy metals (as Pb)
≤0.005% thiosulfate (S₂O₃)
≤0.02% free alkali (as KOH)
≤10 ppm total nitrogen (N)

loss

≤0.2% loss on drying, 105 °C

pH

6-8 (20 °C, 5%)

mp

681 °C (lit.)

anion traces

bromide, chloride (as Cl^-): ≤100 ppm
iodate (IO₃^-): ≤2 ppm
phosphate (PO₄^3-): ≤10 ppm
sulfate (SO₄^2-): ≤10 ppm

cation traces

As: ≤0.00001%
Ba: ≤0.002%
Ca: ≤0.001%
Fe: ≤0.0003%
Mg: ≤0.001%
Na: ≤0.03%

SMILES string

[K+].[I-]

InChI

1S/HI.K/h1H;/q;+1/p-1

InChI key

NLKNQRATVPKPDG-UHFFFAOYSA-M