Potassium (meta)periodate

InChI

1S/HIO4.K/c2-1(3,4)5;/h(H,2,3,4,5);/q;+1/p-1

InChI key

FJVZDOGVDJCCCR-UHFFFAOYSA-M

SMILES string

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

grade

ACS reagent, puriss. p.a.

assay

≥99.8% (dried material, RT)

form

crystals

loss

≤0.1% loss on drying, 110 °C

pH

~5.1 (25 °C, 5 g/L)

anion traces

bromide, bromate, chloride, chlorate (as Cl^-): ≤100 mg/kg, sulfate (SO₄^2-): ≤50 mg/kg

cation traces

Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤50 mg/kg, Mg: ≤5 mg/kg, Mn: ≤1 mg/kg, Na: ≤2000 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg