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Skeletal formula of diethylamine
Ball and stick model of the diethylamine molecule
IUPAC name
Other names
Diethamine; N,N-Diethylamine; N-Ethylethanamine
109-89-7 YesY
ChemSpider 7730 YesY
EC number 203-716-3
Jmol-3D images Image
MeSH diethylamine
PubChem 8021
RTECS number HZ8750000
UN number 1154
Molar mass 73.14 g·mol−1
Appearance Colourless liquid
Odor fishy, ammoniacal
Density 0.7074 g mL−1
Melting point −49.80 °C; −57.64 °F; 223.35 K
Boiling point 54.8 to 56.4 °C; 130.5 to 133.4 °F; 327.9 to 329.5 K
log P 0.657
Vapor pressure 24.2–97.5 kPa
150 μmol Pa−1 kg−1
178.1 J K−1 mol−1
−131 kJ mol−1
−3.035 MJ mol−1
Safety data sheet
GHS pictograms The flame pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) The corrosion 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)
GHS signal word DANGER
H225, H302, H312, H314, H332
P210, P280, P305+351+338, P310
EU classification Highly Flammable F Corrosive C
R-phrases R11, R20/21/22, R35
S-phrases (S1/2), S3, S16, S26, S29, S36/37/39
NFPA 704
Flammability code 3: Liquids and solids that can be ignited under almost all ambient temperature conditions. Flash point between 23 and 38 °C (73 and 100 °F). E.g., gasoline) Health code 3: Short exposure could cause serious temporary or residual injury. E.g., chlorine gas Reactivity code 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g., calcium Special hazards (white): no codeNFPA 704 four-colored diamond
Flash point −23 °C (−9 °F; 250 K)
312 °C (594 °F; 585 K)
Explosive limits 1.8–10.1%
Lethal dose or concentration (LD, LC):
540 mg/kg (rat, oral)
500 mg/kg (mouse, oral)[2]
4000 ppm (rat, 4 hr)[2]
US health exposure limits (NIOSH):
TWA 25 ppm (75 mg/m3)[1]
TWA 10 ppm (30 mg/m3) ST 25 ppm (75 mg/m3)[1]
200 ppm[1]
Related compounds
Related amines
Related compounds
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
 N verify (what isYesY/N?)
Infobox references

Diethylamine is a secondary amine with the molecular structure CH3CH2NHCH2CH3 (also written as C4H11N). It is a flammable, strongly alkaline liquid. It is miscible with water and ethanol. It is a colorless liquid which often appears brown due to impurities. It is volatile and has a strong unpleasant odor.

Diethylamine is manufactured from ethanol and ammonia and is obtained together with ethylamine and triethylamine. It is used as a corrosion inhibitor and in the production of rubber, resins, dyes and pharmaceuticals.

Diethylamine is a corrosive chemical and contact with skin may cause irritation or burns.

Diethylamine can be used to cook LSD and is strictly watched by the DEA.


  • Merck Index, 12th Edition, 3160.

External links[edit]