Sodium hydroxide
Sodium So"di*um, n. [NL., fr.E. soda.] (Chem.) A common metallic element of the alkali group, in nature always occuring combined, as in common salt, in albite, etc. It is isolated as a soft, waxy, white, unstable metal, so highly reactive that it combines violently with water, and to be preserved must be kept under petroleum or some similar liquid. Sodium is used combined in many salts, in the free state as a reducer, and as a means of obtaining other metals (as magnesium and aluminium) is an important commercial product. Symbol Na ({Natrium}). Atomic weight 22.990. Specific gravity 0.97. [1913 Webster]

{Sodium amalgam}, an alloy of sodium and mercury, usually produced as a gray metallic crystalline substance, which is used as a reducing agent, and otherwise.

{Sodium carbonate}, a white crystalline substance, {Na2CO3.10H2O}, having a cooling alkaline taste, found in the ashes of many plants, and produced artifically in large quantities from common salt. It is used in making soap, glass, paper, etc., and as alkaline agent in many chemical industries. Called also {sal soda}, {washing soda}, or {soda}. Cf. {Sodium bicarbonate}, and {Trona}.

{Sodium chloride}, common, or table, salt, {NaCl}.

{Sodium hydroxide}, a white opaque brittle solid, {NaOH}, having a fibrous structure, produced by the action of quicklime, or of calcium hydrate (milk of lime), on sodium carbonate. It is a strong alkali, and is used in the manufacture of soap, in making wood pulp for paper, etc. Called also {sodium hydrate}, and {caustic soda}. By extension, a solution of sodium hydroxide. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • Sodium hydroxide — Sodium hydroxide …   Wikipedia

  • sodium hydroxide — n a white brittle deliquescent solid NaOH that dissolves readily in water to form a strongly alkaline and caustic solution and that is used in pharmacy as an alkalizing agent called also caustic soda * * * a powerful alkali in widespread use as a …   Medical dictionary

  • sodium hydroxide — ► NOUN ▪ a strongly alkaline white compound used in many industrial processes; caustic soda …   English terms dictionary

  • sodium hydroxide — n. a white, deliquescent substance, NaOH, in the form of a powder, flakes, sticks, etc.: it is a strong caustic base, widely used in chemistry, oil refining, etc …   English World dictionary

  • sodium hydroxide — natrio hidroksidas statusas T sritis chemija formulė NaOH atitikmenys: angl. caustic soda; sodium hydroxide rus. каустик; каустическая сода; натрий едкий; натрия гидроксид ryšiai: sinonimas – natrio šarmas sinonimas – kaustinė soda …   Chemijos terminų aiškinamasis žodynas

  • sodium hydroxide — noun a strongly alkaline caustic used in manufacturing soap and paper and aluminum and various sodium compounds • Syn: ↑caustic soda • Hypernyms: ↑hydroxide, ↑hydrated oxide, ↑lye …   Useful english dictionary

  • sodium hydroxide — NaOH, highly caustic alkali used to make acids neutral and make sodium salts …   English contemporary dictionary

  • sodium hydroxide — noun Date: 1885 a white brittle solid NaOH that is a strong caustic base used especially in making soap, rayon, and paper …   New Collegiate Dictionary

  • sodium hydroxide — Chem. a white, deliquescent, water soluble solid, NaOH, usually in the form of lumps, sticks, chips, or pellets, that upon solution in water generates heat: used chiefly in the manufacture of other chemicals, rayon, film, soap, as a laboratory… …   Universalium

  • sodium hydroxide — noun a strong, caustic alkali, NaOH, used in the manufacture of soap, detergents, paper, textiles and having many other industrial applications Syn: caustic soda, E524, acidity regulator, lye, soda lye …   Wiktionary

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