( Liquid nitrogen burns, cryogenic liquid burns, liquid propane, hydrogen, methane, liquefied natural gas, aerosol sprays, R22 Chlorodifluromethane gas- air conditioner and refrigerant gas, liquid ammonia burns, frost bite, cold burns++…..) Cryogenic liquids are gases that are liquefied at very low temperatures and high pressures. In their liquid state they are extremely cold (-150 deg C) and small quantities of liquid can expand to large volumes of gas. When these liquids are converted to…