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potassium carbonate

potassium carbonate, chemical compound, K2CO3, white, crystalline, deliquescent substance that forms a strongly alkaline water solution. It is available commercially as a white, granular powder commonly called potash, or pearl ash. It was originally obtained from wood ashes or from the residue left in pots after certain plants, e.g., kelp, were burned in them. It is prepared commercially chiefly by electrolysis of potassium chloride to form potassium hydroxide, which is then carbonated (e.g., by adding carbon dioxide gas). It is used in the manufacture of soft soaps and glass, for washing wool, and in the production of other potassium compounds.

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potash

potash (pl.) lixiviated ashes of vegetables evaporated in pots XVII; potassium carbonate (which these contain in crude form); hydroxide or monoxide of potassium XVIII. — Du. potasschen (mod. potasch); see POT, ASH2.
So F. potasse, whence potass XVIII. potassa XIX. modL. form, appropriated to potassium monoxide by Davy, who (1807) coined the name potassium to designate the metallic element which is the basis of potash.

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potash

pot·ash / ˈpätˌash/ • n. an alkaline potassium compound, esp. potassium carbonate or hydroxide.

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potash

potash: see potassium carbonate.

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potash

potashabash, ash, Ashe, bash, brash, cache, calash, cash, clash, crash, dash, encash, flash, gash, gnash, hash, lash, mash, Nash, panache, pash, plash, rash, sash, slash, smash, soutache, splash, stash, thrash, trash •earbash • kurbash • calabash •slapdash • pebbledash • balderdash •spatterdash • backlash • backslash •whiplash • eyelash • goulash •newsflash • thunderflash • mishmash •gatecrash • Midrash • potash •succotash

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