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Leach :: Leach (v. t.) To dissolve out; -- often used with out; as, to leach out alkali from ashes..

Alkali :: Alkali (n.) Soda ash; caustic soda, caustic potash, etc..

Lixiviate :: Lixiviate (v. t.) To subject to a washing process for the purpose of separating soluble material from that which is insoluble; to leach, as ashes, for the purpose of extracting the alkaline substances..

Antalkaline :: Antalkaline (a.) Of power to counteract alkalies.

Fraxin :: Fraxin (n.) A colorless crystalline substance, regarded as a glucoside, and found in the bark of the ash (Fraxinus) and along with esculin in the bark of the horse-chestnut. It shows a delicate fluorescence in alkaline solutions; -- called also paviin..

Helianthin :: Helianthin (n.) An artificial, orange dyestuff, analogous to tropaolin, and like it used as an indicator in alkalimetry; -- called also methyl orange..

Nitrification :: Nitrification (n.) A process of oxidation, in which nitrogenous vegetable and animal matter in the presence of air, moisture, and some basic substances, as lime or alkali carbonate, is converted into nitrates..

Indicator :: Indicator (n.) That which indicates the condition of acidity, alkalinity, or the deficiency, excess, or sufficiency of a standard reagent, by causing an appearance, disappearance, or change of color, as in titration or volumetric analysis..

Flux :: Flux (n.) Any substance or mixture used to promote the fusion of metals or minerals, as alkalies, borax, lime, fluorite..

Alkalify :: Alkalify (v. i.) To become changed into an alkali.

Spermatin :: Spermatin (n.) A substance allied to alkali albumin and to mucin, present in semen, to which it is said to impart the mucilaginous character..

Phthalein :: Phthalein (n.) One of a series of artificial organic dyes made as condensation products of the phenols with phthalic acid, and well represented by phenol phthalein. Their alkaline solutions are fluorescent..

Magnesia :: Magnesia (n.) A light earthy white substance, consisting of magnesium oxide, and obtained by heating magnesium hydrate or carbonate, or by burning magnesium. It has a slightly alkaline reaction, and is used in medicine as a mild antacid laxative. See Magnesium..

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..

Alkali :: 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..

#NAME? :: -genous () A suffix signifying producing, yielding; as, alkaligenous; endogenous..

Amphoteric :: Amphoteric (a.) Partly one and partly the other; neither acid nor alkaline; neutral.

Ebullition :: Ebullition (n.) Effervescence occasioned by fermentation or by any other process which causes the liberation of a gas or an aeriform fluid, as in the mixture of an acid with a carbonated alkali..

Guanidine :: Guanidine (n.) A strongly alkaline base, CN3H5, formed by the oxidation of guanin, and also obtained combined with methyl in the decomposition of creatin. Boiled with dilute sulphuric acid, it yields urea and ammonia..

Brazilin :: Brazilin (n.) A substance contained in both Brazil wood and Sapan wood, from which it is extracted as a yellow crystalline substance which is white when pure. It is colored intensely red by alkalies..

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