Chlorine is a toxic, corrosive gas that can cause severe burns if inhaled or upon skin contact. It is a greenish-yellow nonflammable liquefied compressed gas packed in cylinders under its own vapor pressure. It form fume on contact with moisture in air. The degree of fuming is related to the amount of humidity in the air. It is also an oxidizer and will support the combustion. Products of combustion gases are generally toxic in nature. Chlorine exposure occurs through inhalation or skin or eye contact. Inhalation irritates the mucous membranes of the eyes, nose, throat, and lungs.