| IUPAC name
| Other names
|Molar mass||45.085 g/mol|
|Density|| 688 g/cm3 (15 °C) (liquid)|
1.61 g/cm3 (20 °C) (gas)
0.81 g/cm3 (20 °C) (70% aq. sol.)
|Melting point||−81.2 °C (−114.2 °F; 192.0 K)|
|Boiling point||16.6 °C (61.9 °F; 289.8 K)|
|Solubility|| Reacts with acids|
Miscible with acetone, benzene, diethyl ether, ethanol, isopropanol, methanol, pyridine, toluene
|Vapor pressure||874 mmHg (20 °C)|
Std enthalpy of
|Safety data sheet|| Sigma-Aldrich (anhydrous)|
Sigma-Aldrich (70% aq. solution)
|Flash point||−37 °C (−35 °F; 236 K)|
|Lethal dose or concentration (LD, LC):|
LD50 (Median dose)
| 400 mg/kg (rat, oral)|
265 mg/kg (rabbit, dermal)
LC50 (Median concentration)
|1230 ppm (mammal)|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Ethylamine is an organic compound with the formula CH3CH2NH2 or just EtNH2.
Like other simple aliphatic amines, ethylamine is a weak base, with a pKa of 10.8.
Ethylamine reacts with acids to form their respective salts.
Ethylamine may be oxidized using a strong oxidizer such as potassium permanganate to form acetaldehyde.
Ethylamine is a colorless gas that condenses just below room temperature to a liquid. It has a strong fish-like odor. Ethylamine is miscible with a variety of solvents, but reacts with acids. Sol. of 70% aq. ethylamine have a density of 0.81 g/mL at 20 °C.
Ethylamine is sold by chemical suppliers. Since it's classified as List I drug precursor in most countries, it's almost impossible to be acquired by the hobby chemist without a permit. In the United States it is classified as a DEA List I chemical.
- CH3CH2OH + NH3 → CH3CH2NH2 + H2O
- CH3CHO + NH3 + H2 → CH3CH2NH2 + H2O
- H2C=CH2 + NH3 → CH3CH2NH2
In another route, ethylamine can be synthesized via nucleophilic substitution of a haloethane (such as chloroethane or bromoethane) with ammonia, utilizing a strong base such as potassium hydroxide. Side products, such as diethylamine and triethylamine are also produced.
- CH3CH2Cl + NH3 + KOH → CH3CH2NH2 + KCl + H2O
- Make ethylammonium salts
- Make simazine
Ethylamine is toxic in high concentrations. It's also flammable and mixtures with air in a confined place can be explosive.
Ethylamine can be stored in compressed cylinders at standard conditions. Alternatively, it may be stored as salt or dissolved in a solvent of choice. Storing it in a fridge or freezer as liquid in a bottle is not recommended.
Ethylamine and its salts aren't harmful to the environment and usually don't require special disposal. If you have small amounts, you can dilute the salt and pour it down the drain or in the ground, where it will break down into less harmful products.