Gallium highly reactive (rubidium and caesium) nor highly toxic (mercury) and can therefore be used in metal-in-glass high-temperature thermometers. It is also notable for having one of the largest liquid ranges for a metal, and for having (unlike mercury) a low vapor pressure at high temperatures. Gallium's boiling point, 2673 K, is more than eight times higher than its melting point on the absolute scale, the greatest ratio between melting point and boiling point of any element. Unlike mercury, liquid gallium metal wets glass and skin, along with most other materials (with the exceptions of quartz, graphite, and Teflon), making it
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