Periodic acid
Oxoacid of iodine (H5IO6 or HIO4) / From Wikipedia, the free encyclopedia
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Periodic acid (/ˌpɜːraɪˈɒdɪk/ per-eye-OD-ik) is the highest oxoacid of iodine, in which the iodine exists in oxidation state +7. It can exist in two forms: orthoperiodic acid, with the chemical formula H5IO6, and metaperiodic acid, which has the formula HIO4.
Quick Facts Names, Identifiers ...
Orthoperiodic acid | |||
Metaperiodic acid | |||
Orthoperiodic acid | |||
Names | |||
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Other names
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Identifiers | |||
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3D model (JSmol) |
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ChemSpider | |||
ECHA InfoCard | 100.030.839 | ||
EC Number |
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PubChem CID |
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UNII |
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UN number | UN3085 | ||
CompTox Dashboard (EPA) |
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Properties | |||
HIO4 (metaperiodic) H5IO6 (orthoperiodic) | |||
Molar mass | 190.91 g/mol (HIO4) 227.941 g/mol (H5IO6) | ||
Appearance | Colourless crystals | ||
Melting point | 128.5 °C (263.3 °F; 401.6 K)[1] | ||
Solubility | soluble in water, alcohols | ||
Conjugate base | Periodate | ||
Hazards[2] | |||
GHS labelling: | |||
Danger | |||
H271, H314, H372, H400 | |||
P210, P260, P273, P303+P361+P353, P305+P351+P338 | |||
NFPA 704 (fire diamond) | |||
Safety data sheet (SDS) | External MSDS | ||
Related compounds | |||
Other anions |
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Other cations |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Periodic acid was discovered by Heinrich Gustav Magnus and C. F. Ammermüller in 1833.[3]