m-Tolidine

CAS NO.：84-67-3
Empirical Formula: C14H16N2
Molecular Weight: 212.29
MDL number: MFCD02269175
EINECS: 201-551-1
SAFETY DATA SHEET (SDS)
Update Date: 2026-05-27 17:36:36

What is m-Tolidine?

Chemical properties

m-Tolidine is pink particles and can form prisms when exposed to water. It is soluble in cold water, alcohol, and ether. In the presence of iron(III) chloride, m-Tolidine does not produce any color. It is tetrazotized with nitrite and acid and couples to form dyes.

The Uses of m-Tolidine

M-TOLIDINE is used for preparation polyimide and epoxy resin material.

The Uses of m-Tolidine

2,2''-Dimethyl-[1,1''-biphenyl]-4,4''-diamine (cas# 84-67-3) is a useful reagent for manufacturing cured films and semiconductor devices.

Preparation

M-Tolidine is made by the reduction of m-nitrotoluene with zinc dust and sodium hydroxide solution. The subsequent rearrangement is carried out with hydrochloric acid or sulfuric acid and gives rise to m-tolidine dihydrochloride or m-tolidine sulfate, which are isolated as salts. The free base is diffificult to isolate and is therefore not a commercial product.

Definition

M-Tolidine gives no color in the presence of iron(III) chloride. It is tetrazotized with nitrite and acid and couples to form dyes. M-Tolidine was used in the past for the production of azo dyes.

Chemical Reactivity

M-Tolidine gives no color in the presence of iron(III) chloride. It is tetrazotized with nitrite and acid and couples to form dyes.

Properties of m-Tolidine

Melting point:	105-106℃
Boiling point:	344.4±37.0 °C(Predicted)
Density	1.106
storage temp.	Keep in dark place,Sealed in dry,Room Temperature
solubility	Chloroform (Slightly), Methanol (Slightly)
form	Solid
pka	4.89±0.10(Predicted)
color	White to Off-White
Stability:	Incompatible with oxidising agents
InChI	InChI=1S/C14H16N2/c1-9-7-11(15)3-5-13(9)14-6-4-12(16)8-10(14)2/h3-8H,15-16H2,1-2H3
CAS DataBase Reference	84-67-3

Safety information for m-Tolidine

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation
Precautionary Statement Codes	P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.