Title: Bromine Pentafluoride
CAS Registry Number: 7789-30-2
Molecular Formula: BrF5
Molecular Weight: 174.90
Percent Composition: Br 45.69%, F 54.31%
Literature References: Prepd by fluorination of bromine at 200° in iron or Monel metal apparatus: Ruff, Menzel, Z. Anorg. Allg. Chem. 202, 49 (1931); Kwasnik in Handbook of Preparative Inorganic Chemistry Vol. 1, G. Brauer, Ed. (Academic Press, New York, 2nd ed., 1963) pp 158-159; from F2 and KBr: Hyde, Boudakian, Inorg. Chem. 7, 2648 (1968). Reviews: Kemmitt, Sharp, Adv. Fluorine Chem. 4, 243-244 (1965); Stein, "Physical and Chemical Properties of Halogen Fluorides" in Halogen Chemistry Vol. 1, V. Gutmann, Ed. (Academic Press, New York, 1967) pp 133-224; Meinert, Z. Chem. 7, 41-57 (1967).
Properties: Liquid. Fumes in air. mp -60.5°. bp 40.76°. d25 2.4604. Trouton constant 23.7. Thermostable up to 460°. Does not attack quartz when dry. Produces an explosion on contact with water. Very reactive, usually with conflagration.
Melting point: mp -60.5°
Boiling point: bp 40.76°
Density: d25 2.4604
CAUTION: Potential symptoms of overexposure are irritation of eyes, skin, respiratory system; corneal necrosis; skin burns; cough, dyspnea, pulmonary edema; liver, kidney injury. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 34. |