A system constructed of steel must itself be dry before allowing chlorine to enter in it. C provided that the moisture level is kept high. Titanium is resistant only to wet chlorine, and consideration should be given to a possible fault where dry chlorine could come into contact with the titanium. Other materials which are resistant to the attack of both wet and dry chlorine gas at ambient temperatures include glass stoneware, porcelain and some plastics. Where chlorine is part of the product, such as chlorinated hydrocarbon solvents, it may be liberated in a fire or when in contact with incompatible chemicals giving off hazardous gases and fumes.
Chlorine is a respiratory irritant.
Exposure to chlorine at levels of around 15 ppm leads to irritation of the mucous membranes of the eyes and nose, and especially of the throat and lungs. Liquid chlorine causes frost burns and is corrosive to human tissue. A chlorine vessel of 1 ton releasing liquid at full flow through an open valve will be empty in about 10 minutes, and a cylinder in far less time. A few breaths Likely to be fatal Gas filters are effective against chlorine only at low concentrations. Chlorine is widely used in making many everyday products.