dimethylaniline

Dimethylaniline, also known as N,N-dimethylaniline or DMA, is an organic compound with the chemical formula (CH3)2NC6H5. It is a derivative of aniline where the two hydrogen atoms on the nitrogen atom are replaced by methyl groups. At room temperature, it is a colorless to yellowish oily liquid with a characteristic amine odor. DMA is soluble in most organic solvents but has limited solubility in water.

This compound is primarily produced by the reaction of aniline with methanol in the presence of an acid catalyst, such as sulfuric acid. It is widely used as an intermediate in the synthesis of dyes, particularly triphenylmethane dyes like malachite green and methyl violet. DMA also finds applications as a curing accelerator for polyester resins and epoxy resins, and as a catalyst in various organic reactions. Its ability to readily undergo electrophilic aromatic substitution makes it a valuable building block in organic chemistry.

Dimethylaniline is considered a hazardous substance. It is flammable and can be toxic if inhaled, absorbed through the skin, or ingested. Exposure can cause irritation to the eyes, skin, and respiratory tract, and in severe cases, it can affect the central nervous system and blood. Proper handling procedures, including adequate ventilation and personal protective equipment, are essential when working with this chemical.