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苯及其同系物是煤焦油分馏或石油裂解产物,人工也可合成。苯在工业生产中一般用作化工原料,如生产酚、氯苯、硝基苯、香料、药物(磺胺、非那西汀等)、丁苯橡胶、苯乙烯、染料、炸药、农药等;还常用作油脂、橡胶、涂料的溶剂及其稀释剂,医药行业用于药物浸渍、萃取等。甲苯、二甲苯由于毒性比苯低,在用作溶剂或稀释剂方面逐渐替代了苯。苯、甲苯、二甲苯在一般情况下不易完全
Benzene and its homologues are coal tar fractionation or petroleum cracking products, which can be synthesized manually. Benzene is generally used as a chemical raw material in industrial production such as phenol, chlorobenzene, nitrobenzene, perfumes, drugs (sulfanilamide, phenacetin, etc.), styrene butadiene rubber, styrene, dyes, explosives, pesticides and the like Commonly used as oils and fats, rubber, paint solvents and thinners, the pharmaceutical industry for drug impregnation, extraction and so on. Toluene and xylene have gradually replaced benzene as a solvent or diluent because of their lower toxicity than benzene. Benzene, toluene, xylene in general is not easy to complete