67406-68-2

Usage

Physical state

Colorless, odorless gas

Primary uses

Refrigerant and blowing agent for plastic foam insulation

Environmental impact

Potent greenhouse gas and ozone-depleting substance

Relative harm

Less harmful than some other chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs)

Ozone depletion classification

Class II Ozone Depleting Substance

Regulatory status

Controlled under the Montreal Protocol with a phase-out schedule for production and use

Additional classification

Volatile organic compound (VOC)

Environmental protection laws

Regulated due to potential contribution to ground-level ozone formation and respiratory health effects

Upstream product

• 28885-04-3 3-chloro-2,2,3-trifluoropropanol 
• 542-75-6 E/Z-1,3-Dichloropropene 
• 421-99-8 1,1,3-trichloro-1,2,2-trifluoropropane 
• 422-52-6 1,1,3,3-tetrachloro-1,2,2-trifluoropropane 

Relevant academic research and scientific papers

19F nuclear magnetic resonance studies of halogenated propanes

The relationship between 19F chemical shifts in halogenated propanes and their structures are elucidated using MNDO calculations to determine the population of rotamers.The pairs of atom gauche to a fluorine atom and van der Waals interaction between the two terminal substituents are responsible for the 19F chemical shifts.The differences among chemical shifts in diastereomers are also discussed in terms of the conformation of molecule.

FLUORINATION OF HYDROGEN-CONTAINING OLEFINS WITH ELEMENTAL FLUORINE

The hydrohalo-olefins cis and trans CHCl=CHCl, CHCl=CCl2, CHCl=CH-CH2Cl and CH2=CCl-CH2Cl have been fluorinated with elemental fluorine to give good yields of hydrohalofluoroalkanes.The best operational conditions for F2 addition to the double bond rather than hydrogen and/or chlorine atom substitution, dimerization and oligomerization of radical intermediates have been studied.Pleriminary studies on the reaction of Freon 12 and Freon 22 towards elemental fluorine have also been carried out.