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Similarly, liquid mercury was used as a coolant for some nuclear reactors; however, sodium is proposed for reactors cooled with liquid metal, because the high density of mercury requires much more energy to circulate as coolant. [115] Mercury was a propellant for early ion engines in electric space propulsion systems.
This is a list of prices of chemical elements.Listed here are mainly average market prices for bulk trade of commodities. Data on elements' abundance in Earth's crust is added for comparison.
Mercury regulation in the United States limit the maximum concentrations of mercury (Hg) that is permitted in air, water, soil, food and drugs. The regulations are promulgated by agencies such as the Environmental Protection Agency (EPA) and Food and Drug Administration (FDA), as well as a variety of state and local authorities.
Crystals of mercury(II) sulfide and several other mercury compounds are deeply colored red, but have no publicly known use in nuclear weapons.. Red mercury is a discredited substance, most likely a hoax perpetrated by con artists who sought to take advantage of gullible buyers on the black market for arms. [1]
Sodium amalgam, with the common formula Na(Hg), is an alloy of mercury and sodium. The term amalgam is used for alloys, intermetallic compounds , and solutions (both solid solutions and liquid solutions) involving mercury as a major component.
Calomel is a mercury chloride mineral with formula Hg 2 Cl 2 (see mercury(I) chloride). It was used as a medicine from the 16th to early 20th century, despite frequently causing mercury poisoning in patients. [5] The name derives from Greek kalos (beautiful) and melas (black) because it turns black on reaction with ammonia. This was known to ...
It is also used to calibrate NMR instruments for detection of mercury (δ 0 ppm for 199 Hg NMR), although diethylmercury and less toxic mercury salts are now preferred. [ 8 ] [ 9 ] [ 10 ] Around 1960, Phil Pomerantz, a man working at the Bureau of Naval Weapons , suggested that dimethylmercury be used as a fuel mix with red fuming nitric acid ...
A medical mercury-in-glass maximum thermometer showing the temperature of 38.7 °C (101.7 °F). One special kind of mercury-in-glass thermometer, called a maximum thermometer, works by having a constriction in the neck close to the bulb. As the temperature rises, the mercury is pushed up through the constriction by the force of expansion.