What is produced as a byproduct of burning plastic?

When plastic is burned, a variety of gases and chemicals can be produced due to the complex composition of plastics. One notable byproduct of burning many types of plastic, especially those containing nitrogen, is hydrogen cyanide. This toxic gas can result from the combustion of certain synthetic materials, like polyurethanes, which may release hydrogen cyanide when subjected to high heat, especially in environments with limited oxygen.

While carbon dioxide is a common product of combustion and can be produced from burning organic materials, it is not the most significant or dangerous byproduct associated specifically with plastic burning. Likewise, ammonia and chlorine gas may be produced in certain situations, but they are less commonly highlighted than hydrogen cyanide in the context of plastic combustion. The presence of toxic gases like hydrogen cyanide emphasizes the hazards associated with burning plastics, making it crucial for safety and environmental concerns in fire management and health risk assessments.