Potassium periodate

Potassium periodate
Names
	IUPAC name Potassium periodate
	Other names potassium metaperiodate
Identifiers
CAS Number	7790-21-8 ;
3D model (JSmol)	Interactive image;
ChemSpider	128877 ;
ECHA InfoCard	100.029.269
EC Number	232-196-0;
PubChem CID	516896;
UNII	Q3LOC6P66L ;
CompTox Dashboard (EPA)	DTXSID90894076 ;
	InChI InChI=1S/HIO4.K/c2-1(3,4)5;/h(H,2,3,4,5);/q;+1/p-1 Key: FJVZDOGVDJCCCR-UHFFFAOYSA-M ; InChI=1/HIO4.K/c2-1(3,4)5;/h(H,2,3,4,5);/q;+1/p-1 Key: FJVZDOGVDJCCCR-REWHXWOFAS;
	SMILES [K+].[O-]I(=O)(=O)=O;
Properties
Chemical formula	KIO4
Molar mass	230.00 g mol−1
Appearance	white crystalline powder
Odor	odourless
Density	3.618 g/cm3
Melting point	582 °C (1,080 °F; 855 K) (decomposes)
Solubility in water	0.17 g/100 mL (0 °C) ; 0.42 g/100 mL (20 °C) ; 4.44 g/100 mL (80 °C) ; 7.87 g/100 mL (100 °C)
Structure
Crystal structure	tetragonal
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Oxidant
NFPA 704 (fire diamond)	1 0 0 OX
Safety data sheet (SDS)	External MSDS
Related compounds
Other anions	Potassium iodide; Potassium iodate
Other cations	Sodium periodate
Related compounds	Periodic acid
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Potassium periodate is an inorganic salt with the molecular formula KIO₄. It is composed of a potassium cation and a periodate anion and may also be regarded as the potassium salt of periodic acid. Note that the pronunciation is per-iodate, not period-ate.

Unlike other common periodates, such as sodium periodate and periodic acid, it is only available in the metaperiodate form; the corresponding potassium orthoperiodate (K₅IO₆) has never been reported.