Trichlorotoluene

Trichlorotoluene refers to any of the three isomers of toluene where three hydrogen atoms have been substituted by chlorine atoms on the methyl group or the aromatic ring. These compounds are collectively known as trichlorotoluenes, and individually as alpha,alpha,alpha-trichlorotoluene, ortho-trichlorotoluene, meta-trichlorotoluene, and para-trichlorotoluene, depending on the position of the chlorine atoms.

Alpha,alpha,alpha-trichlorotoluene, also known as benzotrichloride, has all three chlorine atoms attached to the methyl carbon. It is a colorless liquid with a pungent odor and is an intermediate in the production of benzaldehyde and other organic compounds. It can be synthesized by the photochlorination of toluene.

The ring-substituted trichlorotoluenes (ortho, meta, and para) have chlorine atoms attached to the aromatic ring. These isomers are typically formed through electrophilic aromatic substitution reactions. Their physical and chemical properties vary depending on the specific isomer and the positions of the chlorine atoms. They can be used as intermediates in the synthesis of dyes, pesticides, and pharmaceuticals. Due to the presence of chlorine atoms, these compounds can exhibit varying degrees of toxicity and environmental persistence, requiring careful handling and disposal.