4-Ethylaniline Chemical Properties

Melting point:

-5 °C (lit.)

Boiling point:

216 °C (lit.)

Density 

0.975 g/mL at 25 °C (lit.)

refractive index 

n20/D 1.554(lit.)

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

Hazard Codes 

T

Risk Statements 

23/24/25-33

Safety Statements 

36/37/39-45-36/37-28A

RIDADR 

1602

WGK Germany 

3

RTECS 

BX9900000

TSCA 

Yes

HazardClass 

6.1

PackingGroup 

III

HS Code 

29214980

MSDS

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4-Ethylaniline Usage And Synthesis

Chemical Properties

clear yellow to red-brown liquid

Uses

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.]

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