42 U.S. Code § 14332. Limitations on sale of alkaline-manganese batteries containing mercury

No person shall sell, offer for sale, or offer for promotional purposes any alkaline-manganese battery manufactured on or after May 13, 1996, with a mercury content that was intentionally introduced (as distinguished from mercury that may be incidentally present in other materials), except that the limitation on mercury content in alkaline-manganese button cells shall be 25 milligrams of mercury per button cell.