Amines
REACH
N,N-dimethylaniline
CAS Number
121-69-7
EC Number
204-493-5
Abbreviation
DMA
What is N,N-dimethylaniline?
N,N-Dimethylaniline (CAS 121-69-7), commonly abbreviated as DMA, is a tertiary aromatic amine used as a chemical intermediate and accelerator.
Where is N,N-dimethylaniline used?
- Dye and pigment industry: key intermediate
- Synthesis of triphenylmethane and azo dyes for textile, paper, and leather coloring
- Polymer curing: accelerator for unsaturated polyester and vinyl ester resins
- Printing inks: DMA-derived colorants for hue profiles in packaging inks
- Agrochemical and pharmaceutical intermediate synthesis: building block for controlled alkylation chemistry
- It activates peroxide initiators to control cure rate in composite and laminate production.
Good to know: Buyers sourcing for regulated downstream uses should confirm supplier documentation for batch consistency and purity certification.
Commercial specifications
- Purity typically 99% or higher for synthesis applications
- Liquid in bulk quantities; drum and IBC packaging standard
Other Names (Synonyms)
DMA
What are the physical properties of N,N-dimethylaniline?
Melting Point 2.50 °C
Boiling Point 193.54 °C
Density 0.956 g/cm³ @ Temp: 20 °C
Flash Point 158 °F
Appearance liquid
Color Clear yellow
Form Liquid
Water Solubility 1 g/L (20 ºC)
Vapor Pressure 2 mm Hg ( 25 °C)
Refractive Index n 20/D 1.557(lit.)
pH 7.4 (1.2g/l, H2O, 20℃)
Log P 1.171 at 35℃
How is N,N-dimethylaniline classified and handled safely? Learn More
Danger
GHS06· Toxic GHS08· Health Hazard GHS09· Environmental Hazard GHS07· Irritant GHS02· Flammable GHS05· Corrosive
Hazard Statements
H227 Combustible liquid
H252 Self-heating in large quantities; may catch fire
H301 Toxic if swallowed
H302 Harmful if swallowed
Precautionary Statements
P203 Obtain, consult and follow expert instructions for use.
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P235 Keep cool.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
Which trade and regulatory codes apply to N,N-dimethylaniline?
HS Code 29214200
UN Number 2253
ADR Class 6.1
Packing Group II
Storage Class 6.1A - Combustible acute toxic Cat. 1 and 2
very toxic hazardous materials
WGK (Germany) 3