Organic Peroxide Producers Safety Division (OPPSD)
For more information, contact:
Assistant Director, Regulatory & Technical Affairs
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.
OPPSD provides a forum for plastics companies and materials suppliers to:
- Discuss and resolve safety issues confronting the organic peroxide industry.
- Establish better communications surrounding best safety practices for firms that manufacture, ship, handle and store organic peroxides.
- Identify the hazards presented by mishandling organic peroxides and determine or develop appropriate testing methods to accurately measure these hazards.
- Promote research, development, standardization and publication of reliable data.
- Establish recommended safe practices for organic peroxides.
OPPSD is divided into four committees:
- Product Stewardship
Health & Safety Information
- Safety and Handling of Organic Peroxides Guide (AS-109)
- Safety and Loss Prevention Bulletin -- "The Storage and Handling of Organic Peroxides in the Reinforced Unsaturated Polyester Fabricating Plant Room Temperature and Spray-up Applications"
- HMIS® Classification Table for Organic Peroxides
- Methyl Ethyl Ketone Peroxide Poster
- Organic Peroxide Spill Clean Up
- Glove Types Commonly Used By OPPSD Members
- Respirator Chart
- Organic Peroxide Storage Class Recommendations January 2017
- Process Safety Progress Journal, June 2002, (Issue Vol. 21, No. 2) An example of a Test Method for vent sizing--OPPSD/SPI Methodology
Proper disposal of organic peroxides and their byproducts are important, as risks may still be present. In addition to the resources below, contact your organic peroxide supplier for assistance.
- Dutch Storage Regulations for Organic Peroxides
- UN Recommendation on the Transport of Dangerous Goods (includes list of currently classified organic peroxides)
- UN Manual of tests and criteria (includes classification principles for organic peroxides)
- UN Globally Harmonized System Welcome Page
- UN Globally Harmonized System of Classification and Labeling of Chemicals