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When making certain plastics, organic peroxides are used to initiate a process called polymerization, where one molecule links with other molecules, over and over again, to create plastic polymers. Organic peroxides are essential in the manufacture of plastics like polystyrene (PS), polyvinyl chloride (PVC), and composite products like fiberglass. There are hundreds of different organic peroxides, and each variety has its own properties and uses that enable them to create different polymers with different qualities. 

The same reactivity that makes organic peroxides so useful in facilitating the manufacture of plastic materials also makes them dangerous if handled carelessly. Following recommended storage and handling practices can effectively reduce the risk of fires or explosions associated with organic peroxides. Promoting these safe practices is part of the mission of the Plastics Industry Association’s Organic Peroxide Producers Safety Division (OPPSD). OPPSD aims to promote the safer handling of these compounds and serves as a resource for plastics companies, and the public, about the science behind them.

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  • About the Division

    OPPSD provides a forum for plastics companies and materials suppliers to:  Discuss and resolve safety issues confronting the organic peroxide...

  • Health and Safety

    This information is provided as guidance and general recommendations on the safety and handling of organic peroxides. After reading this guidance,...

  • Disposal Information

    The following recommendations are provided for disposal of solids, liquid, and empty containers. After reading this guidance, please contact your...

  • Transportation Information

    This information is provided as guidance and general recommendations on the transportation of organic peroxides. After reading this guidance, please...

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