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descaling agent
A descaling agent or chemical descaler is a chemical substance used to remove limescale from metal surfaces in contact with hot water, such as in boilers, water heaters, and kettles.〔 "Descaler", Wiktionary, Accessed January 14, 2014〕 Descaling agents are typically acidic compounds such as hydrochloric acid that react with the alkaline carbonate compounds present in the scale, producing carbon dioxide gas and a soluble salt. Strongly acidic descaling agents are often corrosive to the eyes and skin.
Notable descaling agents include citric acid, formic acid, glycolic acid, hydrochloric acid, phosphoric acid, sulfamic acid and acetic acid.
== See also ==
*Dealkalization of water
*Hydronics
*Pickling (metal)
*Water softening
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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