Benzene

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The benzene molecule, including its hydrogen atoms, has been a subject of controversy among scientists. The fact that it was commonly used as a solvent in nearly all labs until concerns arose about its potential link to leukemia has sparked heated debates. Meanwhile, we are constantly exposed to benzene through cigarette smoke and as a natural component of crude oil and gasoline. Despite this, the maximum allowed concentration for an 8-hour workweek is still set at 1 part per million. As a result, lab workers today often have to wear protective gear to minimize their exposure to this potentially hazardous substance.