Sodium iodate (NaIO3)-Powder

Characteristic




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.




Chemical formula：NaIO3

Molar mass：197.891 g·mol−1

Appearance：White orthorhombic crystals

Odor：Odorless

Density：4.28 g/cm3

Melting point：425 °C (797 °F; 698 K)  (anhydrous) decomposes  

                          19.85 °C (67.73 °F; 293.00 K)(pentahydrate)

Solubility in water：2.5 g/100 mL (0 °C)  8.98 g/100 mL (20 °C)  9.47 g/100 mL (25 °C)   32.59 g/100 mL (100 °C)

Solubility：Soluble in acetic acid     Insoluble in alcohol

                  Solubility in dimethylformamide 0.5 g/kg

Magnetic susceptibility (χ)：−53.0·10−6 cm3/mol

Crystal structure：Orthorhombic




Application




The main use of sodium iodate in everyday life is in iodised salt. The other compounds which are used in iodised table salt are potassium iodate, potassium iodide, and sodium iodide. Sodium iodate comprises 15 to 50 mg per kilogram of applicable salt.




Sodium iodate is also used as a dough conditioner to strengthen the dough.