Nomenclature
CAS number: 7783-41-7
Oxygen fluoride; fluorine oxide.
F
2O; mol wt 54.00.
F 70.36%, O 29.63%.
Description and references
Prepd by passing fluorine slowly through an
aq NaOH soln: Yost, Inorg. Synth. 1, 109 (1939); Schnizlein et al., J. Phys. Chem. 56, 233 (1952).
Toxicity data: Darmer et al., Am. Ind. Hyg. Assoc. J. 33, 661 (1972). Review: Kemmitt, Sharp, Adv. Fluorine
Chem. 4, 213-314 (1965).
Properties
Colorless gas. Yellowish-brown when liq. Peculiar
smell. Does not attack glass in the cold. Corrodes mercury. Reacts
very slowly with water. The gas may be kept over water unchanged
for a month. d (liq; 224°) 1.90. mp 223.8°. bp 145.3°.
Trouton constant 20.65. Soly in water (0°) 6.8 ml gas/100 ml H2O. LC50 (1 hr) inhalation by rats, mice: 2.6, 1.5 ppm (Darmer).Caution
Potential symptoms of overexposure
are headache; eyes, skin, respiratory system irritation, pulmonary
edema; direct contact with gas under pressure may cause eye and skin
burns. See NIOSH Pocket Guide
to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 238.