Nomenclature
CAS number: 116-14-3
Tetrafluoroethene; perfluoroethene; TFE.
C
2F
4; mol wt 100.02.
C 24.02%, F 75.98%.
CF
2=CF
2.
Description and references
Monomer of the plastic, polytetrafluoroethylene, q.v. Prepn: O. Ruff,
O. Bretschneider, Z. Anorg. Allg. Chem. 210, 173 (1933). Structural study: T. T. Broun, R.
L. Livingston, J. Am. Chem. Soc. 74, 6084 (1952). Physical properties: M. M. Renfrew,
E. E. Lewis, Ind. Eng. Chem. 38, 870 (1946). Addition reactions: D. D. Coffman et
al., J. Org. Chem. 14, 747 (1949). Thermodynamics and kinetics of mfr by pyrolysis
of chlorodifluoromethane: P. B. Chinoy, P. D. Sunavala, Ind. Eng. Chem. Res. 26, 1340
(1987). Review of mfr: Y. Venkateswarlu, P. S. Murti, Chem. Process Eng. 4, 25-36 (1970);
of chemistry: M. Saijwani, Dinkar, Labdev
J. Sci. Tech. 9-A, 1-12 (1971); of toxicology:
G. L. Kennedy, Jr., Crit. Rev. Toxicol. 21, 149-170 (1990).
Properties
Colorless, odorless gas, bp760 -76.3°. mp -142.5°. d 1.519. Critical temp: 33.3°. Critical press.:
572 lb/sq in. Critical d 0.58. Insol in water. LC50 (4 hr)
in rats, mice, hamsters, guinea pigs (ppm):
37500-45000, 35000, 28500, 28000 (Kennedy). Highly flammable when exposed
to heat or flame. Reacts violently with oxygen.Caution
This substance is reasonably anticipated
to be a human carcinogen: Report on Carcinogens,
Eleventh Edition (PB2005-104914, 2004) p III-245.Use
In mfr of polymers and synthesis of fluorinated
refrigerants, dielectric media and solvents. In vinyl polymerization,
cycloalkylation and addition reactions.