N-Nitrosodiethylamine (NDEA) is a chemical compound classified as a nitrosamine. It is formed by the reaction of diethylamine with nitrous acid. NDEA is primarily used in laboratory research and has been studied for its potential carcinogenic effects in animals. Exposure to NDEA can occur through various sources, including certain foods, tobacco smoke, and industrial processes. Due to its association with cancer, regulatory agencies monitor its levels in the environment and workplace. Understanding NDEA's properties helps in assessing risks and implementing safety measures.