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California regulators have officially listed styrene as a substance known to cause cancer under guidelines set by Proposition 65.


Styrene was linked to cancer in 2011 by the National Toxicology Program, which found that the organic compound can “reasonably be anticipated to be a human carcinogen.” In 2014, the National Research Council affirmed the report.


Styrene is a chemical building block that’s used to manufacture a range of products including high-performance plastics, building insulation, composite materials and polystyrene, which has been a popular material in food packaging.


The potential cancer link contributed to concerns about how styrene can leach out of polystyrene packaging like foam coffee cups or Chinese food containers and expose people to the chemical. Polystyrene foam can also be hazardous for the environment. If not properly discarded, it can accumulate in waterways, absorb contaminants, and be a health hazard for marine life.



To continue reading, Calif. Lists Styerene as a Carcinogen Under Prop 65, click the Chem.Info link above. Please contact Nexreg to find out more about Prop 65 Compliance.