Dry Ice, Freon, acetylene, ammonia, argon, asphyxiating gas, butane, carbon monoxide, chlorine, coal gas, coolant, ethane, ether, ethyl chloride, ethylene, fluorine, formaldehyde, freezing mixture, helium, hydrogen, ice, ice cubes, illuminating gas, krypton, lewisite, liquid air, liquid helium, liquid oxygen, marsh gas, methane, mustard gas, natural gas, neon, nitrogen, oxygen, ozone, poison gas, propane, radon, refrigerant, sewer gas, xenon