[{"from": "human", "value": "What can you tell me about this molecule? [C][C][=Branch1][C][=C][C][=Branch1][C][=O][O][C]"}, {"from": "gpt", "value": "The molecule appears as a clear colorless liquid. Slightly soluble in water and floats on water. Vapors heavier than air. Vapors irritate the eyes and respiratory system. Containers must be heavily insulated or shipped under refrigeration. An inhibitor such as hydroquinone, hydroquinone methyl ester and dimethyl t-butylphenol is added to keep the chemical from initiating polymerization. The chemical may polymerize exothermically if heated or contaminated with strong acid or base. If the polymerization takes place inside a container, the container may rupture violently. Used to make plastics."}]