Title: Ethyl Bromide
CAS Registry Number: 74-96-4
CAS Name: Bromoethane
Additional Names: monobromoethane; bromic ether; hydrobromic ether
Molecular Formula: C2H5Br
Molecular Weight: 108.97
Percent Composition: C 22.04%, H 4.62%, Br 73.33%
Line Formula: CH3CH2Br
Literature References: Made by distilling from a mixture of HBr, ethyl alcohol and H2SO4: Kamm, Marvel, Org. Synth. coll. vol. I, 29 (1941). By phosphorus and bromine method: Goshorn et al., ibid. 36. Absorption spectrum: Hantzsch, Ber. 58, 619 (1925). Physical properties: Mumford, Phillips, J. Chem. Soc. 1950, 75. Toxicity data: E. H. Vernot et al., Toxicol. Appl. Pharmacol. 42, 417 (1977).
Properties: Colorless, flammable, volatile liq; ethereal odor; burning taste; becomes yellowish on exposure to air and light. Vapor harmful. d420 1.4612; d425 1.4515. bp 38.2°. mp -119°. nD20 1.4242. Soly in water (g/100 g) at 0°: 1.067; 10°: 0.965; 20°: 0.914; 30°: 0.896; miscible with alcohol, ether, chloroform and with other organic solvents. Explosive limits (% by vol in air), lower 6.75, upper 11.25. Autoignition temp 952°F (511°C). LC50 rats, mice (ppm): 27000, 16200 (Vernot).
Melting point: mp -119°
Boiling point: bp 38.2°
Index of refraction: nD20 1.4242
Density: d420 1.4612; d425 1.4515
Toxicity data: LC50 rats, mice (ppm): 27000, 16200 (Vernot)
CAUTION: Potential symptoms of overexposure are irritation of eyes, respiratory system and skin; CNS depression; pulmonary edema; liver and kidney disease; cardiac arrhythmias; cardiac arrest. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 134.
Use: Ethylating agent in organic synthesis; as refrigerant. Formerly used as a topical and inhalation anesthetic. |