Companies may find some relief from regulations requiring they provide warnings for their products that contain styrene, according to the American Composites Manufacturers Association (ACMA).

Polystyrene is found in a variety of building products including sealants and wood-fiber composites.

Considered a substance “known to the State to cause cancer,” under California’s Prop 65 regulation, products with certain levels of the chemical have to provide warnings—unless their levels aren’t high enough.

Under California Environmental Protection Agency’s “No Significant Risk Level” (NSRL) rule, styrene levels that do not exceed 27 micrograms per day do not have to come with warnings.

According to the ACMA, the recent ruling allows manufacturers, distributors, OEMs and importers of products containing styrene that are sold in California to have until April 2017 to determine if styrene exposures associated with use of their products are below the NSRL.

“It is important to remember that this applies to any company in or outside of California whose product is sold in California, whether or not the company knew or intended it to be sold in the state,” says ACMA president, Tom Dobbins.

ACMA has a members-only Prop 65 compliance program available with “the guidance and tools composites manufacturers need” to determine if they meet the NSRL exemption. Members can access that information here.

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