Potassium Iodide (KI)-Crystalline

Characteristic

 

Potassium iodide (KI), commonly known as Potassium iodine.An inorganic compound used in the preparation of organic iodide and as a chemical reagent.




Formula：KI

Molar mass：166.0028g/mol

Melting point：681 °C (1,258 °F)

Boiling point：1,330 °C (2,430 °F)

Solubility in water：1280 mg/mL (0 °C (32 °F));1400 mg/mL (20 °C (68 °F));1760 mg/mL (60 °C (140 °F));2060 mg/mL (100 °C (212 °F))

 


Application

 

Potassium iodide is used with silver nitrate to make silver iodide an important chemical in film photography. Medicinally it is used for thyroid blockade, thyroid storm and also as an expectorant. It is a component in some hair treatment chemicals. It is also used as a fluorescence quenching agent in biomedical research, an application that takes advantage of collisional quenching of fluorescent substances by the iodide ion.