Chlorine (Cl2) What is chlorine gas? Chlorine gas (Cl₂) is a corrosive, toxic gas with a greenish-yellow color and a strong odor. Chlorine is most often processed in sizable “chlorine and caustic” plants through electrolysis of a saltwater solution. Uses of chlorine gas Chlorine is frequently applied in the synthesis of several inorganic and organic chemical intermediates such as pharmaceuticals, pesticides, and refrigerants. Because it is an effective oxidizer and is relatively inexpensive to process, chlorine likewise acts as a sterilizer and disinfectant in the treatment of water and wastewater. Additionally, large commercial quantities of Cl2 are used to bleach paper and textiles. Highly-pure chlorine cylinders are utilized in the setup of pilot plants and in research on chemical synthesis. Small amounts of chlorine are can be applied to prepare calibration gas standards for environmental and process monitoring. Where to buy chlorine gas If you're in search of where to by chlorine gas or looking to purchase one of our high-quality PurityPlus® Chlorine options available, use our nearby provider locator at the top of this page to locate and contact your local PurityPlus® distributor. For additional information, check out our website and catalog or give us a call at 877-81P-PLUS (877-817-7587). PurityPlus also provides a Chlorine SDS available via this link or in the sidebar.