4-Ethylaniline
- CAS NO.：589-16-2
- Empirical Formula: C8H11N
- Molecular Weight: 121.18
- MDL number: MFCD00007921
- EINECS: 209-637-0
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:17:08
What is 4-Ethylaniline?
Chemical properties
clear yellow to red-brown liquid
The Uses of 4-Ethylaniline
4-Ethylaniline can be used as intermediates of liquid crystal.
Safety Profile
Poison by ingestion, intravenous, and intraperitoneal routes. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx. See also N-ETHYLANILINE.
Purification Methods
Dissolve p-ethylaniline in *benzene, then acetylate it. Recrystallise the acetyl derivative (m 93-94o, Hickinbottom & Waine J Chem Soc 1565 1930) from *C6H6/pet ether or EOH, and hydrolyse it by refluxing 50g with 500mL of H2O and 115mL of conc H2SO4 until the solution becomes clear. The amine sulfate is isolated, suspended in H2O and solid KOH is added to generate the free base, which separates. Dry it (KOH), and distil it from zinc dust in a vacuum [Berliner & Berliner J Am Chem Soc 76 6179 1954]. The picrate has m 171-172o (from 1,2-dichloroethane). [Beilstein 12 H 1090, 12 III 2380, 12 IV 2419.]
Properties of 4-Ethylaniline
| Melting point: | -5 °C (lit.) |
| Boiling point: | 216 °C (lit.) |
| Density | 0.975 g/mL at 25 °C (lit.) |
| refractive index | n |
| Flash point: | 185 °F |
| storage temp. | Keep in dark place,Inert atmosphere,Room temperature |
| form | Liquid |
| pka | pK1:5.00(+1) (25°C) |
| color | Clear yellow to red-brown |
| Water Solubility | immiscible |
| BRN | 774319 |
| CAS DataBase Reference | 589-16-2(CAS DataBase Reference) |
| NIST Chemistry Reference | 4-Ethylaniline(589-16-2) |
| EPA Substance Registry System | p-Ethylaniline (589-16-2) |
Safety information for 4-Ethylaniline
| Signal word | Danger |
| Pictogram(s) |
 Skull and Crossbones Acute Toxicity GHS06  Health Hazard GHS08 |
| GHS Hazard Statements |
H373:Specific target organ toxicity, repeated exposure |
| Precautionary Statement Codes |
P260:Do not breathe dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P314:Get medical advice/attention if you feel unwell. P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. |
Computed Descriptors for 4-Ethylaniline
4-Ethylaniline manufacturer
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