Yoduro de potasio

InChI key

NLKNQRATVPKPDG-UHFFFAOYSA-M

InChI

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

grade

ACS reagent

vapor pressure

1 mmHg ( 745 °C)

assay

≥99.0%

form

crystals

impurities

≤0.001% N compounds, ≤0.005% insolubles

loss

≤0.2% loss on drying

pH

6.0-9.2 (25 °C, 5%)

mp

681 °C (lit.)

Quality Level

200

solubility

water: complete (ca.1,430 g/l at 25 °C (77 °F))

anion traces

chloride, bromide (as Cl)^-: ≤0.01%, iodate (IO₃^-): ≤3 ppm, phosphate (PO₄^3-): ≤0.001%, sulfate (SO₄^2-): ≤0.005%

cation traces

Ba: ≤0.002%, Ca: ≤0.002%, Fe: ≤3 ppm, Mg: ≤0.001%, Na: ≤0.005%, heavy metals (as Pb): ≤5 ppm