[{"from": "human", "value": "Provide a brief overview of this molecule. [N][#N]"}, {"from": "gpt", "value": "The molecule appears as colorless odorless liquid. Very cold. Contact may cause frostbite. Nontoxic. Under prolonged exposure to heat or fire the container may rupture violently and rocket. Used to freeze foods, to preserve whole blood and other biologicals, and as a coolant."}]