Ethyl Bromide

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.
Ethyl Butylacetylaminopropionate Ethyl Butyrate Ethyl Caprate Ethyl Caproate Ethyl Caprylate

Skeletal formula of bromoethane Skeletal formula of bromoethane with all explicit hydrogens added
Ball and stick model of bromoethane Spacefill model of bromoethane
CAS number 74-96-4 YesY
PubChem 6332
ChemSpider 6092 YesY
EC number 200-825-8
UN number 1891
KEGG C19354 N
MeSH bromoethane
RTECS number KH6475000
Beilstein Reference 1209224
Jmol-3D images Image 1
Molecular formula C2H5Br
Molar mass 108.97 g mol−1
Appearance Colorless liquid
Odor ether-like
Density 1.46 g mL−1
Melting point −120 to −116 °C; −184 to −177 °F; 153 to 157 K
Boiling point 38.0 to 38.8 °C; 100.3 to 101.8 °F; 311.1 to 311.9 K
Solubility in water 1.067 g/100 mL (0 °C)
0.914 g/100 mL (20 °C)
0.896 g/100 mL (30 °C)
Solubility miscible in alcohol, ether, chloroform, organic solvents
log P 1.809
Vapor pressure 51.97 kPa (at 20 °C)
kH 1.3 μmol Pa−1 kg−1
Refractive index (nD) 1.4225
Viscosity 402 Pa s (at 20 °C)
heat capacity C
105.8 J K−1 mol−1
Std enthalpy of
formation ΔfHo298
−97.6–93.4 kJ mol−1
GHS pictograms The flame pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) The exclamation-mark pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) The health hazard pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)
GHS signal word DANGER
GHS hazard statements H225, H302, H332, H351
GHS precautionary statements P210, P281
EU Index 602-055-00-1
EU classification Flammable F Harmful Xn
R-phrases R11, R20/22, R40
S-phrases (S2), S36/37
NFPA 704
NFPA 704.svg
Flash point −23 °C; −9 °F; 250 K
Autoignition temperature 511 °C; 952 °F; 784 K
Explosive limits 6.75–11.25%
LD50 1.35 g kg−1 (oral, rat)
Related compounds
Related alkanes
  • Bromomethane
  • Bromoiodomethane
  • n-Propyl bromide
  • 2-Bromopropane
  • tert-Butyl bromide
 N (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Bromoethane, also known as ethyl bromide, is a chemical compound of the haloalkanes group. It is abbreviated by chemists as EtBr. This volatile compound has an ether-like odour.