How much benzene is toxic? – Sage-Answer
16/8/2019· How much benzene is toxic? Brief exposure (5–10 minutes) to very high levels of benzene in air (10,000–20,000 ppm) can result in death. Lower levels (700–3,000 ppm) can cause drowsiness, dizziness, rapid heart rate, headaches, tremors, confusion, and unconsciousness. How poisonous is benzene? Benzene is very poisonous.