Chlorinated paraffin 52 is a type of chlorinated paraffin, which is a group of synthetic chemicals that are used in a variety of industrial applications, including as flame retardants and plasticizers. Chlorinated paraffin 52 is characterized by having a medium chain length, typically between 14 and 17 carbon atoms, and a chlorine content of around 52%. It is commonly used as a secondary plasticizer and flame retardant in PVC cables and other PVC products. However, chlorinated paraffins have been found to have toxic effects on the environment and human health, and their use is becoming increasingly restricted in many countries.