3111. Diethylamine

Nomenclature

CAS number: 109-89-7
N-Ethylethanamine.
C4H11N; mol wt 73.14.
C 65.69%, H 15.16%, N 19.15%.

Description and references

Prepn from ethyl iodide and NH3 with separation of mono-, di-, and triethylamines formed: Watt, Otto, J. Am. Chem. Soc. 69, 836 (1947). Manuf from ethanol and NH3, obtained along with mono- and triethylamines: Davies et al., US 2609394 (1952 to ICI); Lemon, Myerly, US 3022349 (1962 to Union Carbide). Toxicity data: Smyth et al., Arch. Ind. Hyg. Occup. Med. 4, 119 (1951).

Chemical structure

Properties

Strongly alkaline liquid, bp 55.5°. mp -50°. d420 0.7074. nD20 1.3864. Flash pt <20°F. Forms a hydrate, B2.H2O, mp -19°. Miscible with water, alc. It is usually supplied as a soln. Flammable, corrosive. Keep well closed. LD50 orally in rats: 540 mg/kg (Smyth).

Derivative

Hydrochloride.

Nomenclature

CAS number: 660-68-4
C4H11N.HCl; mol wt 109.60.
C 43.83%, H 11.04%, N 12.78%, Cl 32.35%.

Properties

Crystals from alcohol + ether, mp 226°. Hygroscopic. bp 320-330°. d421 1.048. Sol in water, alcohol, chloroform. Practically insol in ether.

Caution

Potential symptoms of overexposure are eye, skin and respiratory system irritation. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 106. See also Patty's Industrial Hygiene and Toxicology vol. 2B, G. D. Clayton, F. E. Clayton, Eds. (Wiley-Interscience, New York, 3rd ed., 1981) p 3149.

Use

In the rubber and petroleum industry. In flotation agents, resins, dyes, buffer formulations, and pharmaceuticals.