Nomenclature
CAS number: 75-46-7
Trifluoromethane.
CHF
3; mol wt 70.01.
C 17.16%, H 1.44%, F 81.41%.
Description and references
Prepd from CHCl3 and HF: Meslans, Compt. Rend. 110, 717 (1890);
Valentiner, US 643835 (1900); Ruff, Ber. 69, 299 (1936); Whallay, J. Soc. Chem. Ind. London 66, 429
(1947); Kwasnik in Handbook of Preparative
Inorganic Chemistry vol. 1, G. Brauer, Ed.
(Academic Press, New York, 2nd ed., 1963) pp 204-205. Early industrial
prepn: Pearlson in Fluorine Chemistry vol. I, J. H. Simons, Ed. (Academic Press, New York,
1950) p 467.
Properties
Colorless, odorless gas. Stable up to 1150°.
Chemically very inert. d (solid) 1.935. d (liq; 100°) 1.52. mp 160°. bp 84.4°. Critical temp 33°, critical pressure 47 atm, critical
density 0.516. May be stored over water.
Practically non-toxic: N. V. Sidgwick, The
Chemical Elements and Their Compounds vol. II (Oxford, 1950) p 1130.Caution
May be slightly irritating to respiratory
tract, and, in high concns, narcotic.Use
Refrigerant for low temps.