Carbonyl Fluoride
Title: Carbonyl Fluoride
CAS Registry Number: 353-50-4
CAS Name: Carbonic difluoride
Additional Names: fluophosgene
Molecular Formula: CF2O
Molecular Weight: 66.01
Percent Composition: C 18.20%, F 57.56%, O 24.24%
Line Formula: COF2
Literature References: Prepd from CO and F2 or BrF3 and CO: Ruff, Miltschitzky, Z. Anorg. Allg. Chem. 221, 154 (1935); Kwasnik in Handbook of Preparative Inorganic Chemistry vol. 1, G. Brauer, Ed. (Academic Press, New York, 2nd ed., 1963) p 206. Alternate route from CO + AgF2: Farlow et al., Inorg. Synth. 6, 155 (1960).
Properties: Pungent, very hygroscopic gas. d (solid, -190°): 1.388. d (liq, -114°): 1.139. mp -114.0°. bp -83.1°. Heat of formation: 166.6 kcal. Instantly hydrolyzed by water.
Melting point: mp -114.0°
Boiling point: bp -83.1°
Density: d (solid, -190°): 1.388; d (liq, -114°): 1.139
CAUTION: Potential symptoms of overexposure are irritation of eyes, skin, mucous membranes, respiratory system; eye, skin burns; lacrimation; cough, pulmonary edema, dyspnea; direct contact with liquid may cause frostbite. Chronic exposure may cause GI pain, muscular fibrosis, skeletal fluorosis. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 54.

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