What do nail polish, children’s foam-padded sleeping mats and tires have in common? Not much at first glance, but all have been identified as “priority products” under California’s Safer Consumer Products regulations administered by the California Department of Toxic Substances Control (DTSC) under the state’s Green Chemistry law. The Regulation and Its Requirements The regulation designating motor vehicle tires containing the chemical N-(1,3-dimethylbutyl)-N’-phenyl-p-phenylenediamine (6PPD) as a priority product became final on July 3, 2023, making tires containing 6PPD the seventh priority product identified under the law.

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