Triethylamine

C₆H₁₅NMolar mass101.193 g·mol Appearance Colourless liquid OdorFishy, ammoniacal Density0.7255 g mL Melting point−114.70 °C; −174.46 °F; 158.45 K Boiling point88.6 to 89.8 °C; 191.4 to 193.5 °F; 361.7 to 362.9 K

Solubility in water

112.4 g/L at 20 °C Solubilitymiscible with organic solvents log P1.647 Vapor pressure6.899–8.506 kPa

Henry's law
constant (k_H)

66 μmol Pa kg Acidity (pK_a) 10.75 (for the conjugate acid) (H₂O), 9.00 (DMSO)

Magnetic susceptibility (χ)

−81.4·10 cm/mol

Refractive index (n_D)

1.401 Thermochemistry

Heat capacity(C)

216.43 J K mol

Std enthalpy of
formation(Δ_fH₂₉₈)

−169 kJ mol

Std enthalpy of
combustion(Δ_cH₂₉₈)

−4.37763 to −4.37655 MJ mol Hazards GHS labelling:

Pictograms

Signal word

Danger

Hazard statements

H225, H302, H312, H314, H332

Precautionary statements

P210, P280, P305+P351+P338, P310NFPA 704 (fire diamond)

3

0

Flash point−15 °C (5 °F; 258 K)

Autoignition
temperature

312 °C (594 °F; 585 K) Explosive limits1.2–8%

Threshold limit value (TLV)

2 ppm (8 mg/m) (TWA),
4 ppm (17 mg/m) (STEL) Lethal dose or concentration (LD, LC):

LD₅₀ (median dose)

580 mg kg (dermal, rabbit)
730 mg kg (oral, rat)

LC_Lo (lowest published)

1425 ppm (mouse, 2 hr) NIOSH (US health exposure limits):

PEL (Permissible)

TWA 25 ppm (100 mg/m)

REL (Recommended)

None established

IDLH (Immediate danger)

200 ppm 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).

verify ( ?)

Triethylamine is the chemical compound with the formula N(CH₂CH₃)₃, commonly abbreviated Et₃N. Like triethanolamine and the tetraethylammonium ion, it is often abbreviated TEA. It is a colourless volatile liquid with a strong fishy odor reminiscent of ammonia. Like diisopropylethylamine (Hünig's base), triethylamine is commonly employed in organic synthesis, usually as a base.