Phenol [Organic chemistry]

Phenol, also known as carbolic acid, is an aromatic organic compound with the chemical formula C6H5OH. It consists of a hydroxyl group (-OH) attached to a benzene ring. Phenol is a white crystalline solid at room temperature and has a characteristic sweet and tar-like odor. Key Points about Phenol: Structure: Phenol has a hydroxyl group directly bonded to an aromatic benzene ring. Physical Properties: It is slightly soluble in water and has higher boiling and melting points than benzene due to hydrogen bonding. Acidity: Phenol is more acidic than alcohols because the phenoxide ion (formed after losing a proton) is stabilized by resonance. Reactivity: Phenol undergoes electrophilic aromatic substitution reactions more readily than benzene, leading to products such as nitrophenols, bromophenols, and sulfonated phenols. Preparation: Common methods include the cumene process, where cumene (isopropylbenzene) is oxidized to produce phenol and acetone. Uses: Phenol is used in the manufacture of plastics (such as Bakelite), resins, pharmaceuticals (like aspirin), and as an antiseptic. Phenol is both a valuable industrial chemical and a compound of significant biological interest due to its antiseptic properties, though it is toxic and must be handled with care.