Iodine Pentafluoride (IF5)

A fluorinating agent in organic synthesis.

  iodine-pentafluoride Click to enlarge
Iodine pentafluoride is used as a fluorinating agent in organic synthesis.

The main application is in telomerisation processes, where IFis reacted with tetrafluoroethylene to produce fluorinated alkyl iodide with linear, even numbered alkyl chain lengths, so called fluorotelomer.

Iodine pentafluoride is a colourless liquid with a pungent odour. The highly reactive IF(melting point 9.4 °C) is distillable at 100.5 °C without any decomposition. Decomposition commences at temperatures above 400 °C.  

Technical Data

Iodine pentafluoride

Physical and Chemical Data
Appearance: Fuming liquid when in contact with air
Colour:colourless liquid
Odour: pungent
Melting point / freezing point: 9.4 °C
Boiling point / boiling range:100.5 °C
Flash point: none


Product name:Iodine pentafluoride
Chemical name:Iodine pentafluoride
Substance name:Iodine pentafluoride
Concentration:>= 99 %
CAS-no.:7783-66-6 / EC-No.: 232-019-7 / Index-No.: 
Type of product: liquid
Molecular formula: IF5