What can happen to PVC in a fire?

In a fire, polyvinyl chloride (PVC) can decompose and produce harmful gases, one of which is hydrogen chloride. This is a significant concern for fire safety and health because hydrogen chloride is a toxic substance that can cause respiratory issues and skin irritation upon exposure. PVC does not remain stable; instead, it can break down when subjected to high temperatures, which can lead to the release of this hazardous gas. Understanding the behavior of PVC in fire situations is crucial for fire investigators because it influences both the assessment of the fire's spread and the potential toxic hazards present in the environment. The production of hydrogen chloride is particularly concerning in enclosed spaces, where the gas can accumulate and pose serious risks to both firefighters and victims of the fire.