Chlorine (Cl), also identified by Chemical Abstracts Service (CAS) number 7782-50-5, is a light, highly reactive gaseous element exhibiting a yellow-green color at room temperature. Although pure chlorine is too reactive to exist in its original state, various naturally occurring chlorine compounds are essential to human life. For example, the hydrochloric acid in our stomachs aids digestion by breaking down food and killing harmful bacteria. And most of us have used sodium chloride (table salt) to season our food. Chlorine gas is produced via the electrolysis of a sodium chloride solution, which yields a caustic soda known as sodium hydroxide along with hydrogen gas. Brenntag North America is a top chlorine gas distributor for industrial and manufacturing applications.