Magnesium is highly flammable, especially when powdered or shaved into thin strips, though it is difficult to ignite in mass or bulk. [19] Flame temperatures of magnesium and magnesium alloys can reach 3,100°C (5,610°F), [22] although flame height above the burning metal is usually less than 300mm (12in). [23] Once ignited, such fires are difficult to extinguish because they resist several substances commonly used to put out fires; combustion continues in nitrogen (forming magnesium nitride), in carbon dioxide (forming magnesium oxide and carbon), and in water (forming magnesium oxide and hydrogen, which also combusts due to heat in the presence of additional oxygen). This property was used in incendiary weapons during the firebombing of cities in World War II, where the only practical civil defense was to smother a burning flare under dry sand to exclude atmosphere from the combustion.

http://www.mlodzilekarzerodzinni.pl/wp-content/uploads/2018/09/Stosowanie-witamin-i-mikroelement%C3%B3w-u-kobiet-planuj%C4%85cych-ci%C4%85%C5%BC%C4%99-ci%C4%99%C5%BCarnych-i-karmi%C4%85cych.pdf The name magnesium originates from the Greek word for locations related to the tribe of the Magnetes, either a district in Thessaly called Magnesia [42] or Magnesia ad Sipylum, now in Turkey. [43] It is related to magnetite and manganese, which also originated from this area, and required differentiation as separate substances. See manganese for this history.Spurgeon, Brad (11 June 2015). "On Auto Racing's Deadliest Day". The New York Times. ISSN 0362-4331 . Retrieved 7 May 2023.

James MF (2010). "Magnesium in obstetrics". Best Pract Res Clin Obstet Gynaecol. 24 (3): 327–337. doi: 10.1016/j.bpobgyn.2009.11.004. PMID 20005782. tubulopatie wrodzone ( choroby nerek, w których upośledzone jest wchłanianie zwrotne lub wydzielanie w cewkach nerkowych, są to np.: zespół Gitelmana, zespół Barttera, hipomagnezemia rodzinna z hiperkalciurią, hipomagnezemia z wtórną hipokalcemią, mutacja aktywująca receptor wapniowy) W rzadkich przypadkach nadmiar soli magnezu worganizmie może prowadzić do biegunki iodwodnienia. Inne poważne skutki nadmiaru magnezu obserwowane głównie uosób, którym podawano go dożylnie to: niewyraźna mowa, podwójne widzenie iparaliż. Suplementacja magnezu Pal, Uday B.; Powell, Adam C. (2007). "The Use of Solid-Oxide-Membrane Technology for Electrometallurgy". JOM. 59 (5): 44–49. Bibcode: 2007JOM....59e..44P. doi: 10.1007/s11837-007-0064-x. S2CID 97971162.

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Magnesium hydroxide ( brucite) is insoluble in water and can be filtered out and reacted with hydrochloric acid to produced concentrated magnesium chloride. Luo, Alan A. & Powell, Bob R. (2001). Tensile and Compressive Creep of Magnesium-Aluminum-Calcium Based Alloys (PDF) (Report). Materials & Processes Laboratory, General Motors Research & Development Center. Archived from the original (PDF) on 28 September 2007 . Retrieved 21 August 2007. Automotive The Bugatti Type 57 Aérolithe featured a lightweight body made of Elektron, a trademarked magnesium alloy. Therefore, water cannot extinguish magnesium fires. The hydrogen gas produced intensifies the fire. Dry sand is an effective smothering agent, but only on relatively level and flat surfaces.