anisidin

Anisidine is a generic term for any organic compound with the formula CH3OC6H4NH2. It refers to the three structural isomers of methoxyaniline. These isomers are ortho-anisidine (2-methoxyaniline), meta-anisidine (3-methoxyaniline), and para-anisidine (4-methoxyaniline). They are all aromatic amines.

Ortho-anisidine is a colorless to yellowish liquid with a distinct odor. Meta-anisidine is a yellowish to brown liquid. Para-anisidine is a solid that can be white to brown. All three isomers are produced industrially by the reduction of the corresponding nitroanisole. Their primary uses are as intermediates in the synthesis of dyes and pigments, as well as in the production of pharmaceuticals and agrochemicals.

Anisidines are generally considered hazardous. They can be absorbed through the skin and are toxic if inhaled or swallowed. Exposure can lead to methemoglobinemia, a condition where the blood's ability to carry oxygen is reduced. Appropriate safety precautions, including adequate ventilation and personal protective equipment, are necessary when handling these compounds. Their environmental impact is also a consideration, and proper disposal methods are important.