Maine officials are set to make a ruling about whether to tighten the state’s rules about household chemicals.

The proposed rules concern phthalates, which are used in products like raincoats, vinyl flooring and personal care items. The change would elevate four phthalates from “high concern” to “priority chemical” status under state rules. Manufacturers would need to report the use of the chemicals in products sold in the state.

Maine Department of Environmental Protection officials say Commissioner Patricia Aho has until Jan. 27 to rule on the proposal. Environmental organizers have said they sent more than 500 letters in support of the new regulations.

The U.S. Centers for Disease Control and Prevention says some types of phthalates have affected reproductive systems in lab animals.

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