Potassium periodate

Potassium periodate

Names
IUPAC name Potassium periodate
Other names potassium metaperiodate
Identifiers
CAS Number	7790-21-8 Y
3D model (JSmol)	Interactive image
ChemSpider	128877 Y
ECHA InfoCard	100.029.269
EC Number	232-196-0
PubChem CID	516896
UNII	Q3LOC6P66L Y
CompTox Dashboard (EPA)	DTXSID90894076
InChI InChI=1S/HIO4.K/c2-1(3,4)5;/h(H,2,3,4,5);/q;+1/p-1 Y Key: FJVZDOGVDJCCCR-UHFFFAOYSA-M Y 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). Y verify (what is YN ?) 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.