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Potassium periodate
Chemical compound / From Wikipedia, the free encyclopedia
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.
Quick Facts Names, Identifiers ...
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Names | |
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IUPAC name
Potassium periodate | |
Other names
potassium metaperiodate | |
Identifiers | |
3D model (JSmol) |
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ChemSpider |
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ECHA InfoCard | 100.029.269 ![]() |
EC Number |
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PubChem CID |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
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) |
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 | |
tetragonal | |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Main hazards |
Oxidant |
NFPA 704 (fire diamond) | |
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).
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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.