Characteristic

 

Sodium iodide (chemical formula NaI) is an ionic compound formed from the chemical reaction of sodium metal and iodine. 

Chemical formula：NaI

Molar mass：149.894g/mol

Appearance：white solid deliquescent

Odor：odorless

Density：3.67 g/cm³

Melting point：661 °C (1,222 °F; 934 K) 

Boiling point：1,304 °C (2,379 °F; 1,577 K) 

Solubility in water：1587 g/L (0 °C);1842 g/L (25 °C);2278 g/L (50 °C);2940 g/L (70 °C);3020 g/L (100 °C)

Solubility：ethanol, acetone

Band gap：5.89 eV

Magnetic susceptibility (χ)：−57×10⁻⁶ cm³/mol

Refractive index (nD)：1.93 (300 nm);1.774 (589 nm);1.71 (10 µm)

Crystal structure：Halite, cF8

 

Application

 

Sodium iodide commonly is used to prevent iodine deficiency. Used as analytical reagents, in the manufacture of disinfectants, antiseptics, deodorants and medicines. They are used in baking ingredient conditioner and as animal feed. It is used for conversion of an alkyl chlorides into an alkyl iodides, such as in the treatment of thyroid cancer and hyperthyroidism and in scintillation detectors, traditionally in nuclear medicine, geophysics, nuclear physics, and environmental measurements.