Is PVC a flame retardant

Polyvinyl chloride (PVC) is inherently flame-resistant due to its chlorine content, which helps inhibit combustion. However, it is not classified as a flame retardant in the same way that specific additives are. While PVC can self-extinguish when the flame source is removed, it can still release harmful gases when burned. Thus, while it offers some flame-resistant properties, additional flame retardants may be added for enhanced safety.