[{"from": "human", "value": "Provide a brief overview of this molecule. [C][=C][C][Cl]"}, {"from": "gpt", "value": "The molecule appears as a clear colorless liquid with an unpleasant pungent odor. Flash point -20 \u00b0F. Boiling point 113 \u00b0F. Less dense than water (7.8 lb / gal) and insoluble in water. Hence floats on water. Vapor irritates skin, eyes and mucous membranes. Vapors are heavier than air. Long exposure to low concentrations or short exposure to high concentrations may have adverse health effects from inhalation or skin absorption."}]