Definition of alkali

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Alkali (n.) 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..

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Antalkaline :: Antalkaline (a.) Of power to counteract alkalies.
Calcium :: Calcium (n.) An elementary substance; a metal which combined with oxygen forms lime. It is of a pale yellow color, tenacious, and malleable. It is a member of the alkaline earth group of elements. Atomic weight 40. Symbol Ca..
Alkalinity :: Alkalinity (n.) The quality which constitutes an alkali; alkaline property.
Lixivial :: Lixivial (a.) Having the qualities of alkaline salts extracted from wood ashes.
Potassium :: Potassium (n.) An Alkali element, occurring abundantly but always combined, as in the chloride, sulphate, carbonate, or silicate, in the minerals sylvite, kainite, orthoclase, muscovite, etc. Atomic weight 39.0. Symbol K (Kalium)..
Borax :: Borax (n.) A white or gray crystalline salt, with a slight alkaline taste, used as a flux, in soldering metals, making enamels, fixing colors on porcelain, and as a soap. It occurs native in certain mineral springs, and is made from the boric acid of hot springs in Tuscany. It was originally obtained from a lake in Thibet, and was sent to Europe under the name of tincal. Borax is a pyroborate or tetraborate of sodium, Na2B4O7.10H2O..
Alkalimetric :: Alkalimetric (a.) Alt. of Alkalimetrica.
Alcalimeter :: Alcalimeter (n.) See Alkalimeter.
Potash :: Potash (n.) The hydroxide of potassium hydrate, a hard white brittle substance, KOH, having strong caustic and alkaline properties; -- hence called also caustic potash..
Chloroform :: Chloroform (n.) A colorless volatile liquid, CHCl3, having an ethereal odor and a sweetish taste, formed by treating alcohol with chlorine and an alkali. It is a powerful solvent of wax, resin, etc., and is extensively used to produce anaesthesia in surgical operations; also externally, to alleviate pain..
Alum :: Alum (n.) A double sulphate formed of aluminium and some other element (esp. an alkali metal) or of aluminium. It has twenty-four molecules of water of crystallization.
Kaligenous :: Kaligenous (a.) Forming alkalies with oxygen, as some metals..
Lithia :: Lithia (n.) The oxide of lithium; a strong alkaline caustic similar to potash and soda, but weaker. See Lithium..
Alkaloidal :: Alkaloidal (a.) Pertaining to, resembling, or containing, alkali..
Alkalescent :: Alkalescent (a.) Tending to the properties of an alkali; slightly alkaline.
Pearlash :: Pearlash (n.) A white amorphous or granular substance which consists principally of potassium carbonate, and has a strong alkaline reaction. It is obtained by lixiviating wood ashes, and evaporating the lye, and has been an important source of potassium compounds. It is used in making soap, glass, etc..
Corrector :: Corrector (n.) One who, or that which, corrects; as, a corrector of abuses; a corrector of the press; an alkali is a corrector of acids..
Kill :: Kill (v. t.) To destroy the effect of; to counteract; to neutralize; as, alkali kills acid..
Protamin :: Protamin (n.) An amorphous nitrogenous substance found in the spermatic fluid of salmon. It is soluble in water, which an alkaline reaction, and unites with acids and metallic bases..
Fluorescein :: Fluorescein (n.) A yellowish red, crystalline substance, C20H12O5, produced by heating together phthalic anhydride and resorcin; -- so called, from the very brilliant yellowish green fluorescence of its alkaline solutions. It has acid properties, and its salts of the alkalies are known to the trade under the name of uranin..
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