C6H4CH3NO2

C6H4CH3NO2 refers to a group of chemical compounds known as nitrotoluenes. These are aromatic organic compounds where a methyl group (CH3) and a nitro group (NO2) are attached to a benzene ring (C6H4). The specific arrangement of these two substituents on the benzene ring leads to different isomers, each with its own distinct properties. The most common isomers are ortho-nitrotoluene, meta-nitrotoluene, and para-nitrotoluene, often abbreviated as O-nitrotoluene, M-nitrotoluene, and P-nitrotoluene respectively.

These compounds are typically yellow crystalline solids or liquids, depending on the isomer and temperature. They are generally insoluble in water but soluble in organic solvents like ethanol and ether. Nitrotoluenes are produced by the nitration of toluene, a process involving the reaction of toluene with a mixture of nitric acid and sulfuric acid.

The primary use of nitrotoluenes is as intermediates in the synthesis of other chemicals. For example, they are precursors to toluidines, which are used in the production of dyes, pigments, and pharmaceuticals. P-nitrotoluene, in particular, is a key ingredient in the synthesis of para-toluidine. Some nitrotoluenes have also found applications as explosives, though they are less common than other nitroaromatic compounds. Due to their potential toxicity and environmental impact, handling and disposal of nitrotoluenes require careful consideration and adherence to safety regulations.