Cyclopentadiene

Chemical reference number (CAS): 542-92-7

Cyclopentadiene is a manmade chemical. It is either a clear liquid or solid, with a sweet odor like turpentine or camphor. Manufacturers use cyclopentadiene to make resins and other chemicals.

Cyclopentadiene is not commonly found in home-use products. It is found in tobacco smoke and car exhaust. It’s also found in exhaust from coal and oil-fueled fires.

When released into the air, cyclopentadiene breaks down to a less toxic chemical within a few hours

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Last Revised: December 30, 2015