News & Press: Industry

PPFA Commissions Prop 65 Testing

Tuesday, January 7, 2020  
Posted by: Gina Fisher
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PPFA Commissions Prop 65 Testing

The Plastic Pipe and Fittings Association (PPFA) recently commissioned the law firm of Keller and Heckman LLP (K&H) to develop and coordinate testing on acrylonitrile butadiene styrene (ABS), polyvinyl chloride (PVC) and chlorinated PVC (CPVC) pipes for the purpose of supporting our members efforts to comply with California’s Proposition 65 warning requirements.

Proposition 65 prohibits any person “in the course of doing business” in California from knowingly and intentionally exposing any individual to any chemical known to the state to cause cancer or reproductive toxicity without first providing a “clear and reasonable warning” to such individual (known and commonly referred to as a “Proposition 65 warning”).

While two chemicals commonly found in plastic pipes, carbon black and titanium dioxide (TiO₂), are listed as chemicals known to the State of California to cause cancer, the mere presence of Proposition 65 listed chemicals in a product does not necessarily lead to exposure requiring a Proposition 65 warning. For purposes of Proposition 65, a person must be exposed to “airborne, unbound particles of respirable size” of carbon black or TiO₂ in a product in order to trigger the Proposition 65 warning requirements. Accordingly, PPFA’s goal in commissioning the testing was to obtain K&H’s assessment of the potential for relevant exposure to these chemicals under the test conditions.

At PPFA’s direction, K&H coordinated screening-level air-sample testing to determine whether the ABS, PVC and CPVC pipes included in the test emitted or generated airborne and respirable particles of TiO₂ or carbon black when cut by various power tools under conditions similar to the typical installation process for such pipes. As expected, the test results did not reveal airborne, unbound particles of carbon black or TiO2 of respirable size.


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