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more about alkalis
alkalis |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Alkali \Al"ka*li\ (?; 277), n.; pl {Alkalis} or {Alkalies}. [F. alcali ultimately fr Ar alqal[=i] ashes of the plant saltwort, fr qalay to roast in a pan, fry.] 1. Soda ash; caustic soda, caustic potash, etc 2. (Chem.) One of a class of caustic bases, such as soda, potash, ammonia, and lithia, whose distinguishing peculiarities are solubility in alcohol and water, uniting with oils and fats to form soap, neutralizing and forming salts with acids, turning to brown several vegetable yellows, and changing reddened litmus to blue. {Fixed alkalies}, potash and soda. {Vegetable alkalies}. Same as {Alkaloids}. {Volatile alkali}, ammonia, so called in distinction from the fixed alkalies.
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