Dimethylaniline

N,N-Dimethylaniline (DMA) is an organic chemical compound, a substituted derivative of aniline. It is a tertiary amine, featuring a dimethylamino group attached to a phenyl group. This oily liquid is colourless when pure, but commercial samples are often yellow. It is an important precursor to dyes such as crystal violet.

This article is about N,N-dimethylaniline. For other constitutional isomers, see xylidine.
N,N-Dimethylaniline
Names
Preferred IUPAC name
N,N-Dimethylaniline
Other names
DMA
Dimethylaminobenzene
N,N-Dimethylbenzeneamine
N,N-Dimethylphenylamine
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.004.085
KEGG
UNII
  • InChI=1S/C8H11N/c1-9(2)8-6-4-3-5-7-8/h3-7H,1-2H3 Y
    Key: JLTDJTHDQAWBAV-UHFFFAOYSA-N Y
  • CN(C)c1ccccc1
Properties
C8H11N
Molar mass 121.183 g·mol−1
Appearance Colorless liquid
Odor amine-like
Density 0.956 g/mL
Melting point 2 °C (36 °F; 275 K)
Boiling point 194 °C (381 °F; 467 K)
2% (20°C)
Vapor pressure 1 mmHg (20°C)
-89.66·10−6 cm3/mol
Hazards
Flash point 63 °C (145 °F; 336 K)
Lethal dose or concentration (LD, LC):
1410 mg/kg (rat, oral)
50 ppm (rat, 4 hr)
NIOSH (US health exposure limits):
PEL (Permissible)
 TWA 5 ppm (25 mg/m3) [skin]
REL (Recommended)
 TWA 5 ppm (25 mg/m3) ST 10 ppm (50 mg/m3) [skin]
IDLH (Immediate danger)
 100 ppm
Safety data sheet (SDS) External MSDS
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
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