It is used to conduct electricity (i.e. Mercury was the remedy of choice for syphilis in Protestant Europe. Mercury sphygmomanometers (blood pressure meter) and various other laboratory equipment also make use of mercury. Mercuric … Mercury is used in thermometers and traditional blood pressure monitors. All forms of mercury are quite toxic, and each form exhibits different health effects. Deuterodemercuration finds use in the preparation of deuterofurans ( Scheme 110 ) 〈74JCS(P1)1141〉 . Despite the danger of this element, mercury still has many important uses. Mercury is used in laboratories for making thermometers, barometers, diffusion pumps, and many other instruments. Recently, atomic clocks containing this metal have been presented in various international scientific presentations. 3-Chloromercuriofuran is available by pyrolysis of the mixed salt ( 397 ) and is readily converted into the iodo compound ( 398 ; Scheme 111 ), which is a valuable source of 3-substituted furans via the lithio derivative 〈72CJC3749〉 . It is used in floodlights, streetlights, and other outdoor or powerful lights. Dental clinics have to install high-performance filters, … It is used as an electrode in some types of electrolysis and for making batteries (mercury cells). These contain 50% mercury. An organic compound of mercury, thimerosal, is used as a disinfectant in multi-dose vials of vaccines. Mercury is important in some types of industry, for instance for … Much mercury is utilized in the preparation of pharmaceuticals and agricultural and industrial fungicides. Paracelsus (1493-1541) formulated mercury as an ointment because he recognised the toxicity and risk of poisoning when administrating mercury as an elixir. Because of its structure, it destroys bacteria without harming humans. Mercury(II) chloride, HgCl 2 (also called bichloride of mercury or corrosive sublimate), is perhaps the commonest bivalent compound. It is also used as a catalyst in the chemical manufacturing industry. Chemical compounds of mercury have found uses in batteries, in biocides in paper industry, in paints, and on seed grain, as antiseptics in pharmaceuticals, as reagents in laboratories, and as catalysts. However, today the use of mercury is being phased out for safer mercury-free products. The restriction conditions are listed as follows. Mercury is also no longer allowed in most switches and relays found in electronic equipment.

Energy-efficient lamps using mercury technology are only permitted on the market with a reduced mercury content. A local facility using mercury compounds as reaction catalysts in the production of plastic discharged mercury as a component of the waste stream into Minamata Bay. Mercury and its compounds and REACH annex XVII Mercury and its compounds are included in REACH Annex XVII restricted substances list (entry 18 and 18a). Since July 2018, the biggest remaining application for mercury in the EU, dental amalgam, is prohibited from use on vulnerable patients. Mercury is used in its pure form in thermometers and barometers. Although extremely toxic, this odourless, colourless substance has a wide variety of applications. Mercury ointments continued to be used well into the 19th and early 20th century.

Many batteries contain mercury. Due to the high molecular weight, low ionization energy, and high liquid density, it was used as a propellant for electric propulsion systems.

Mercury and its compounds are mainly used for producing measuring devices and some metal products. In agriculture it is used as a fungicide; in medicine it is sometimes employed as a topical antiseptic in concentrations of one part per 2,000 parts of water; and in the



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