Sodium periodate

Sodium periodate is an inorganic salt, composed of a sodium cation and the periodate anion. It may also be regarded as the sodium salt of periodic acid. Like many periodates, it can exist in two different forms: sodium metaperiodate (formula‍ NaIO4) and sodium orthoperiodate (normally Na2H3IO6, but sometimes the fully reacted salt Na5IO6). Both salts are useful oxidising agents.

Sodium periodate
Names
IUPAC name
Sodium periodate
Other names
Sodium metaperiodate
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.029.270
EC Number
  • 232-197-6
RTECS number
  • SD4550000
UNII
  • InChI=1S/HIO4.Na/c2-1(3,4)5;/h(H,2,3,4,5);/q;+1/p-1 Y
    Key: JQWHASGSAFIOCM-UHFFFAOYSA-M Y
  • InChI=1/HIO4.Na/c2-1(3,4)5;/h(H,2,3,4,5);/q;+1/p-1
    Key: JQWHASGSAFIOCM-REWHXWOFAO
  • InChI=1S/HIO4.Na/c2-1(3,4)5;/h(H,2,3,4,5);/q;+1/p-1
    Key: JQWHASGSAFIOCM-UHFFFAOYSA-M
  • [O-]I(=O)(=O)=O.[Na+]
Properties
NaIO4
Molar mass 213.8918 g/mol
Appearance white crystals
Density 3.865 g/cm3 (anhydrous)
3/210 g/cm3
Melting point 300 °C (572 °F; 573 K) (anhydrous)
175 °C (347 °F; 448 K) (trihydrate) (decomposes)
91 g/L
Solubility soluble in acids
Structure
tetragonal (anhydrous)
trigonal (trihydrate)
Hazards
NFPA 704 (fire diamond)
2
0
3
OX
Related compounds
Other anions
 sodium perchlorate, sodium perbromate
Other cations
 potassium periodate, periodic acid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references
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