Chloromethyl ether is a chemical compound with the formula C2H5ClO. It is a colorless liquid that has a sweet odor and is primarily used in the production of various chemicals and pharmaceuticals. Due to its reactivity, it can be involved in several chemical reactions, making it valuable in organic synthesis. However, chloromethyl ether is also known to be a hazardous substance. It is classified as a potential carcinogen, meaning it may increase the risk of cancer with prolonged exposure. Proper safety measures are essential when handling this compound to minimize health risks.