AUGUSTA – Maine’s Department of Environmental Protection is set to end the public comment period on a citizens’ petition to regulate phthalates in household products.

A proposed rule change would elevate four phthalates from “high concern” to “priority chemical” status under state regulations. That means manufacturers would need to report the use of the chemicals in products sold in the state. Comments are due to the state by Sept. 29.

Phthalates chemicals are used in products such as vinyl flooring and personal care items. The U.S. Centers for Disease Control and Prevention says some types of phthalates have affected reproductive systems in lab animals.

The DEP commissioner will have 120 days to make a ruling once comments are closed.