09-05-2023-2038 - draft (Periodic acid, etc., draft)

Periodic acid

Orthoperiodic acid
Metaperiodic acid
HIO4·2H2O
Names
Other names Paraperiodic acid Iodic(VII) acid Hydrogen periodate
Identifiers
CAS Number	10450-60-9 (orthoperiodic)  13444-71-8 (metaperiodic)
3D model (JSmol)	(orthoperiodic): Interactive image (metaperiodic): Interactive image
ChemSpider	23622 (orthoperiodic)  58684 (metaperiodic)
ECHA InfoCard	100.030.839
EC Number	236-585-6
PubChem CID	65185 (metaperiodic)
UNII	AK1D44L87G  D4B1481B2J (metaperiodic)
UN number	UN3085
CompTox Dashboard (EPA)	DTXSID10883144

InChI

SMILES
Properties
Chemical formula	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:
Pictograms
Signal word	Danger
Hazard statements	H271, H314, H372, H400
Precautionary statements	P210, P260, P273, P303+P361+P353, P305+P351+P338
NFPA 704 (fire diamond)	3 0 0 OX
Safety data sheet (SDS)	External MSDS
Related compounds
Other anions	Perchloric acid HClO4 Perbromic acid HBrO4 Permanganic acid HMnO4 Telluric acid Te(OH)6 Perxenic acid H4XeO6
Other cations	Sodium periodate Potassium periodate
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

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.

Periodic acid was discovered by Heinrich Gustav Magnus and C. F. Ammermüller in 1833.^[3] 

https://en.wikipedia.org/wiki/Periodic_acid