Diethylamine
Diethylamine is an organic compound with the formula (CH3CH2)2NH. It is a secondary amine. It is a flammable, weakly alkaline liquid that is miscible with most solvents. It is a colorless liquid, but commercial samples often appear brown due to impurities. It has a strong ammonia-like odor.
| Names | |
|---|---|
| Preferred IUPAC name
N-Ethylethanamine | |
| Other names
(Diethyl)amine Diethylamine (deprecated) | |
| Identifiers | |
3D model (JSmol) |
|
| 605268 | |
| ChEBI | |
| ChEMBL | |
| ChemSpider | |
| ECHA InfoCard | 100.003.380 |
| EC Number |
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| MeSH | diethylamine |
PubChem CID |
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| RTECS number |
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| UNII | |
| UN number | 1154 |
CompTox Dashboard (EPA) |
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SMILES
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| Properties | |
| C4H11N | |
| Molar mass | 73.139 g·mol−1 |
| Appearance | Colourless liquid |
| Odor | fishy, ammonical |
| 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 |
| Miscible | |
| log P | 0.657 |
| Vapor pressure | 24.2–97.5 kPa |
Henry's law constant (kH) |
150 μmol Pa−1 kg−1 |
| Acidity (pKa) | 10.98 (of ammonium form) |
Magnetic susceptibility (χ) |
-56.8·10−6 cm3/mol |
Refractive index (nD) |
1.385 |
| Thermochemistry | |
Heat capacity (C) |
178.1 J K−1 mol−1 |
Std enthalpy of formation (ΔfH⦵298) |
−131 kJ mol−1 |
Std enthalpy of combustion (ΔcH⦵298) |
−3.035 MJ mol−1 |
| Hazards | |
| GHS labelling: | |
| Danger | |
| H225, H302, H312, H314, H332 | |
| P210, P280, P305+P351+P338, P310 | |
| NFPA 704 (fire diamond) |
3
3
1 |
| 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): | |
LD50 (median dose) |
540 mg/kg (rat, oral) 500 mg/kg (mouse, oral) |
LC50 (median concentration) |
4000 ppm (rat, 4 hr) |
| NIOSH (US health exposure limits): | |
PEL (Permissible) |
TWA 25 ppm (75 mg/m3) |
REL (Recommended) |
TWA 10 ppm (30 mg/m3) ST 25 ppm (75 mg/m3) |
IDLH (Immediate danger) |
200 ppm |
| Safety data sheet (SDS) | hazard.com |
| Related compounds | |
Related amines |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
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