Paratoluidine

Paratoluidine, also known as 4-methylaniline or p-toluidine, is an organic compound with the chemical formula CH3C6H4NH2. It is an isomer of toluidine, meaning it has the same chemical formula but a different structural arrangement of atoms. Specifically, paratoluidine is a primary amine with a methyl group substituted at the para position of the aniline ring. It appears as a colorless solid that can darken upon exposure to air and light. It is soluble in organic solvents and slightly soluble in water.

Paratoluidine is used as an intermediate in the synthesis of various organic compounds, including dyes, pigments, and pharmaceuticals. Its reactivity as an amine allows it to participate in a range of chemical reactions, such as diazotization and acylation. In the dye industry, it is a precursor to azo dyes, which are widely used for coloring textiles and other materials. The production of paratoluidine typically involves the reduction of 4-nitrotoluene. Safety precautions are necessary when handling paratoluidine due to its potential toxicity and irritant properties.