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苯（běn）（英語：benzene），化學式為C6H6，簡稱⌬、⏣或PhH，旧称囷、焑、㷍、菕、輪質等，是芳香烃，在常温为易燃、易挥发、氣味刺鼻、无色液體。苯有较强毒性，是致癌物質。不完全燃燒、吸煙...