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Sodium iodate: Wikis

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Sodium iodate
Other names iodic acid, sodium salt
Identifiers
CAS number 7681-55-2
PubChem 24344
RTECS number NN1400000
Properties
Molecular formula NaIO3
Molar mass 197.8924 g/mol
Appearance white orthorhombic crystals
Density 4.28 g/cm³, solid
Melting point

425 °C (decomp) [1]

Solubility in water 9.47g/100 mL
Hazards
EU classification not listed
NFPA 704
NFPA 704.svg
 
1
1
OX
Related compounds
Other anions sodium iodide
sodium periodate
sodium bromate
sodium chlorate
Other cations potassium iodate
silver iodate
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Sodium iodate (NaIO3) is a chemical compound. Sodium iodate is an oxidizing agent and as such it can cause fires upon contact with combustible materials or reducing agents.

Contents

Preparation

It can be prepared by reacting a sodium-containing base such as sodium hydroxide with iodic acid, for example:

HIO3 + NaOH → NaIO3 + H2O

It can also be prepared by adding iodine to a hot, concentrated solution of sodium hydroxide or its carbonate:

3 I2 + 6 NaOH → NaIO3 + 5 NaI + 3 H2O

Reactions

Sodium iodate can be oxidized to sodium periodate in water solutions by hypochlorites or other strong oxidizing agents:

NaIO3 + NaOClNaIO4 + NaCl

Safety

Conditions/substances to avoid are: heat, shock, friction, combustible materials, reducing materials, aluminium, organic compounds, carbon, hydrogen peroxide, sulfides.

References

  1. ^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 4–85, ISBN 0849305942  
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