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3,4-Diaminotoluene

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3,4-Diaminotoluene Basic information

Product Name:
3,4-Diaminotoluene
Synonyms:
  • 1,2-benzenediamine,-methyl-
  • 1,2-Diamino-4-ethylbenzene
  • 1,2-Diamino-4-methylbenzene
  • 2-AMINO-4-METHYLPHENYLAMINE
  • 4-METHYL-1,2-PHENYLENEDIAMINE
  • 4-METHYL-1,2-BENZENEDIAMINE
  • 4-METHYL-BENZENE-1,2-DIAMINE
  • 4-METHYL-O-PHENYLDIAMINE
CAS:
496-72-0
MF:
C7H10N2
MW:
122.17
EINECS:
207-826-2
Product Categories:
  • Amines
  • Intermediates of Dyes and Pigments
  • Aromatics
  • Intermediates
  • Building Blocks
  • Chemical Synthesis
  • Nitrogen Compounds
  • Organic Building Blocks
  • Polyamines
  • bc0001
Mol File:
496-72-0.mol
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3,4-Diaminotoluene Chemical Properties

Melting point:
87-89 °C (lit.)
Boiling point:
155-156 °C/18 mmHg (lit.)
Density 
1.2207 (rough estimate)
refractive index 
1.5103 (estimate)
Flash point:
155-156°C/18mm
storage temp. 
Keep in dark place,Inert atmosphere,Room temperature
solubility 
Chloroform (Sparingly), Methanol (Slightly)
pka
4.59±0.10(Predicted)
form 
Crystalline Chunks or Flakes
color 
Brown to grayish-brown
Water Solubility 
16 g/L (20 ºC)
BRN 
507965
Stability:
Stable. Incompatible with strong oxidizing agents.
CAS DataBase Reference
496-72-0(CAS DataBase Reference)
NIST Chemistry Reference
1,2-Benzenediamine, 4-methyl-(496-72-0)
EPA Substance Registry System
3,4-Diaminotoluene (496-72-0)
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Safety Information

Hazard Codes 
Xn
Risk Statements 
20/21/22-36/37/38-52/53-40-36-22
Safety Statements 
26-37/39-61-36/37/39
RIDADR 
UN 2811
WGK Germany 
2
RTECS 
XS9820000
TSCA 
Yes
HazardClass 
6.1(b)
PackingGroup 
III
HS Code 
29215119
Hazardous Substances Data
496-72-0(Hazardous Substances Data)

MSDS

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3,4-Diaminotoluene Usage And Synthesis

Chemical Properties

Off-white small blocks

Uses

5-Methylbenzotriazole intermediate.

Uses

4-Methyl-o-phenylenediamine was employed as chromogenic reagent in the spectrophotometric determination of selenium(IV). It was used in the synthesis of an asymmetrical tetradentate Schiff base via condensation with dehydroacetic acid and salicylic aldehyde.

Synthesis Reference(s)

Tetrahedron Letters, 42, p. 2277, 2001 DOI: 10.1016/S0040-4039(01)00163-0

General Description

A colorless to brownish purple crystalline solid. Toxic by ingestion and inhalation and an irritant to skin and eyes. Soluble in water, alcohol and ether. Decomposes to emit toxic oxides of nitrogen when heated to high temperature. Used in making dyes.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

3,4-Diaminotoluene 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

Flash point data for 3,4-Diaminotoluene are not available. 3,4-Diaminotoluene is probably combustible.

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