Hexafluoropropylene

  • Perfluoropropylene
  • R 1216
  • Hexafluoropropylene
  • HFP

Colorless and almost odorless, non-flammable gas

Gaseous

6.91 g · cm -3 ( 0 ° C)

-156.5 ° C

-30.3 ° C

674 kPa ( 20 ° C)

0.52 mol · l - 1 in water

1,583 (-40 ° C)

Attention

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Hexafluoropropene ( C3F6 ) is the full form of the fluorinated propene. The molecule has a double bond between the carbon atoms.

Production and representation

Hexafluoropropene can be by thermal treatment of tetrafluoroethylene, chlorotetrafluoroethane and octafluorocyclobutane, and joint pyrolysis of chlorodifluoromethane and 2 -chloro-1 ,1,1,2 - obtained tetrafluoroethane. It occurs even at extreme thermal load of Teflon.

Properties

The colorless gas is almost odorless. Hexafluoropropene irritates the respiratory tract and is harmful if inhaled. It has a critical temperature of 124.6 ° C, a critical pressure of 54.95 bar and a triple point temperature of -156.5 ° C (melting temperature).

Use

Hexafluoropropene is used as the process gas in the plasma technology to deposit Teflon -like layers on surfaces. It acts as a comonomer for the industrial preparation of polymers based on tetrafluoroethylene ( EFEP eg = ethylene HFP TFE = tetrafluoroethylene - ethylene - hexafluoropropene ).

CAS registry number Vapor pressure Dangerous Substances Directive (67/548/EEC) Fluorine Critical point (thermodynamics) CRC Handbook of Chemistry and Physics
390601
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