Overview
Sodium iodate is an inorganic salt with the formula NaIO3. It consists of sodium cations and iodate anions, the latter derived from iodic acid. As a stable oxidizing compound, it appears as a white crystalline solid that dissolves in water and is used where a reliable source of iodine or mild oxidant is required. For basic chemical data see chemical data.
Chemical characteristics
The iodate ion contains iodine in a relatively high oxidation state and behaves differently from iodide salts. Sodium iodate is the sodium salt of HIO3 and is typically prepared by neutralizing iodic acid with a sodium base. It is soluble in water and decomposes on strong heating. For detailed compositional notes consult composition and structure resources.
Uses and applications
Sodium iodate is employed in analytical chemistry, as an oxidizing reagent in some organic transformations, and as a source of iodine for technical applications. In some fortification or industrial processes an iodate salt provides a more stable form of iodine than iodide. Practical uses and comparison with related compounds are discussed at use cases and comparative references.
Handling, safety and distinctions
- It is an oxidizer: avoid mixing with strong reducing agents or flammable organic material.
- It can be an irritant and should be handled with appropriate protective equipment and waste management.
- Distinguished from iodide (I−) salts by its oxidizing behavior and from periodates (IO4−) by iodine oxidation state.
Historically, iodates have been produced as part of iodine chemistry development and remain important in laboratory and industrial contexts where controlled oxidation or a stable iodine source is required.