Chlorinated hydrocarbons are organic compounds that contain chlorine atoms bonded to carbon and hydrogen. They are often used in industrial applications, such as solvents, pesticides, and refrigerants. Some common examples include dichloromethane and DDT. These compounds can be effective in their uses but may also pose environmental and health risks. Due to their chemical stability, chlorinated hydrocarbons can persist in the environment, leading to potential accumulation in living organisms. This persistence raises concerns about their impact on ecosystems and human health, prompting regulations and research into safer alternatives.