Formula NaIO3 Melting point 425 °C | Molar mass 197.8924 g/mol Density 4.28 g/cm³ | |
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Appearance White orthorhombic crystals | ||
Synthesis of sodium iodate
Sodium iodate (NaIO3) is the sodium salt of iodic acid. Sodium iodate is an oxidizing agent, and as such it can cause fires upon contact with combustible materials or reducing agents.
Contents
Sodium iodate
Preparation
It can be prepared by reacting a sodium-containing base such as sodium hydroxide with iodic acid, for example:
HIO3 + NaOH → NaIO3 + H2OIt 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 H2OReactions
Sodium iodate can be oxidized to sodium periodate in water solutions by hypochlorites or other strong oxidizing agents:
NaIO3 + NaOCl → NaIO4 + NaClSafety
Conditions/substances to avoid are: heat, shock, friction, combustible materials, reducing materials, aluminium, organic compounds, carbon, hydrogen peroxide, sulfides.
References
Sodium iodate Wikipedia(Text) CC BY-SA