2,3-Dimethylaniline Chemical Properties

Melting point:

2.5 °C (lit.)

Boiling point:

221-222 °C (lit.)

Density 

0.993 g/mL at 25 °C (lit.)

vapor density 

4.2 (vs air)

vapor pressure 

0.13 hPa (25 °C)

refractive index 

n20/D 1.569(lit.)

Flash point:

205 °F

storage temp. 

Store below +30°C.

solubility 

1.5g/l

pka

pK1:4.70(+1) (25°C)

form 

Liquid

color 

Clear yellow to red-brown

explosive limit

1-2.7%(V)

Water Solubility 

30 g/L (20 ºC)

Merck 

14,10084

BRN 

742174

Stability:

Stable. Combustible. Incompatible with strong oxidizing agents. Reacts with hypochlorite bleaches. May be light sensitive.

CAS DataBase Reference

87-59-2(CAS DataBase Reference)

NIST Chemistry Reference

Benzenamine, 2,3-dimethyl-(87-59-2)

EPA Substance Registry System

2,3-Dimethylaniline (87-59-2)

Safety Information

Hazard Codes 

T,N

Risk Statements 

23/24/25-33-51/53

Safety Statements 

28-36/37-45-61-28A

RIDADR 

UN 1711 6.1/PG 2

WGK Germany 

2

RTECS 

ZE8750000

Autoignition Temperature

545 °C

TSCA 

Yes

HazardClass 

6.1

PackingGroup 

II

HS Code 

29214910

Hazardous Substances Data

87-59-2(Hazardous Substances Data)

MSDS

• Language:English Provider:2,3-Dimethylphenylamine
• Language:English Provider:ACROS
• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

2,3-Dimethylaniline Usage And Synthesis

Chemical Properties

brown liquid

Uses

Reagent used in the preparation of non-steroidal anti-inflammatory drugs, dyes and pesticides.

General Description

Dark brown liquid.

Air & Water Reactions

Slightly soluble in water.

Reactivity Profile

2,3-Dimethylaniline reacts with strong oxidizing agents and hypochlorite bleaches . Neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen may be generated in combination with strong reducing agents, such as hydrides.

Fire Hazard

2,3-Dimethylaniline is combustible.

Safety Profile

A poison. Moderately toxic by ingestion. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx. See also other xylidine entries.

Purification Methods

Purify vic-xylidine by conversion into a derivative (see below), recrystallise the derivative, decompose the derivative with aqueous NaOH and fractionally distil the liquid base. The acetyl derivative has m 135o (from EtOH), and the formyl derivative has m 102o (from EtOH). [Beilstein 12 H 1101, 12 III 2438, 12 IV 2497.]

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