Mercury (element) used in teething powders for infants. The mercury-containing organohalide merbromin (sometimes sold as Mercurochrome) is still widely used but has been banned in some countries such as the U.S. Mercury and most of its compounds are extremely toxic and must be handled with care; in cases of spills involving mercury (such as from certain thermometers or fluorescent light bulbs), specific cleaning procedures are used to avoid exposure and contain the spill. Protocols call for physically merging smaller droplets on hard surfaces, combining them into a single larger pool for easier removal with an eyedropper, or for gently pushing the spill
Toxic Substances Control Act of 1976 new chemical not listed in the 1976 act by using a PMN. Section 5 of the Toxic Substances Control Act (TSCA) does not require any toxicity testing before submitting a PMN No safety information is required to be included in the PMN, so the EPA must rely on computer modeling to determine whether the new chemical "may present an unreasonable risk." In order to regulate new chemicals, the EPA must determine that the chemical "...may present an unreasonable risk to human health or the environment..." or show that the chemical "... is or will be produced in substantial quantities, and