Sodium Iodide (NaI)-Powder

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：149.894

Appearance：white solid deliquescent

Odor：odorless

Density：3.67 g cm⁻³

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⁻¹

Refractive index (nD)：1.93 (300 nm)

                                     1.774 (589 nm)

                                     1.71 (10 µm)

Crystal structure：Halite, cF8

Application

Trace determination of cesium, platinum and thallium, iodine co-solvent, photography;

It is the raw material for manufacturing inorganic iodide and organic iodide;

In medicine, it is used as thyroid tumor prevention agent, expectorant, diuretic, food additive and photosensitive agent.

Used as X-ray contrast agent in medicine, cystography, retrograde urography, t-tube cholangiography, etc.

Used as an analytical reagent.