C7H7Cl3

C7H7Cl3 is the chemical formula for a group of organic compounds known as trichlorotoluenes. These compounds are derived from toluene, where three hydrogen atoms on the methyl group or the aromatic ring have been replaced by chlorine atoms. The exact position of the chlorine atoms dictates the specific isomer and its properties.

Common isomers include alpha-trichlorotoluene (benzotrichloride), where all three chlorine atoms are on the methyl group. This compound is a colorless liquid with a pungent odor and is a key intermediate in the production of various chemicals, including dyes and pharmaceuticals. It is a reactive compound due to the presence of the trichloromethyl group.

Other isomers involve chlorine substitution on the aromatic ring, such as 2,4,6-trichlorotoluene. These compounds generally exhibit different physical and chemical properties compared to benzotrichloride. Trichlorotoluenes can be synthesized through various chlorination reactions of toluene under specific conditions to control the degree and position of chlorination. Due to their chemical reactivity and potential for environmental persistence, the handling and disposal of trichlorotoluenes require careful consideration. Their applications are primarily as chemical intermediates rather than end products.