[{"from": "human", "value": "What can you tell me about this molecule? [AsH3]"}, {"from": "gpt", "value": "The molecule appears as a colorless gas with a disagreeable garlic odor. Flammable. Heavier than air. Flame easily flashes back to the source of leak. Extremely toxic by inhalation; has been used as a military poison gas. Confirmed human carcinogen. Under prolonged exposure to fire or heat containers may rupture violently and rocket.  Rate of onset: Immediate to 24 hours  Persistence: Minutes to hours  Odor threshold: 0.5 ppm  Source/use/other hazard: Used in electronics industry; reacts with H20 (don't use H2O in fire)."}]