Benzene (C6H6), a hydrocarbon and the simplest aromatic compound, has the CAS number 000071-43-2. At room temperature, it is a colorless, transparent liquid with a sweet odor, flammability, and carcinogenic toxicity, featuring a strong aromatic smell. Benzene can be produced via catalytic reforming and pyrolysis gasoline. It is poorly soluble in water but readily soluble in organic solvents and can itself serve as an organic solvent. This product is used as a key raw material for synthesizing dyes, rubber, resins, and petrochemical products, as well as for adhesives and industrial solvents, and can also be used in precision optical instruments.