Sodium carbonate
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.

Look at other dictionaries:

  • Sodium carbonate — Sodium carbonate …   Wikipedia

  • sodium carbonate — n. 1. the anhydrous sodium salt of carbonic acid, Na2CO3 2. any of the hydrated carbonates of sodium; esp., SAL SODA …   English World dictionary

  • sodium carbonate — n a sodium salt of carbonic acid used esp. in making soaps and chemicals, in water softening, in cleaning and bleaching, and in photography: as a) a hygroscopic crystalline anhydrous strongly alkaline salt Na2CO3 b) WASHING SODA * * * [NF] the… …   Medical dictionary

  • sodium carbonate — noun a sodium salt of carbonic acid; used in making soap powders and glass and paper • Syn: ↑washing soda, ↑sal soda, ↑soda ash, ↑soda • Hypernyms: ↑salt * * * sodium carbonate [sodium carbonate …   Useful english dictionary

  • sodium carbonate — natrio karbonatas statusas T sritis chemija formulė Na₂CO₃ atitikmenys: angl. calcined soda; soda ash; sodium carbonate rus. кальцинированная сода; натрий углекислый; натрия карбонат ryšiai: sinonimas – dinatrio trioksokarbonatas sinonimas –… …   Chemijos terminų aiškinamasis žodynas

  • sodium carbonate — Chem. 1. Also called soda ash. an anhydrous, grayish white, odorless, water soluble powder, Na2CO3, usually obtained by the Solvay process and containing about 1 percent of impurities consisting of sulfates, chlorides, and bicarbonates of sodium …   Universalium

  • sodium carbonate — noun Date: 1868 a sodium salt of carbonic acid used especially in making soaps and chemicals, in water softening, in cleaning and bleaching, and in photography: as a. a hygroscopic crystalline anhydrous strongly alkaline salt Na2CO3 b. the… …   New Collegiate Dictionary

  • sodium carbonate — noun A salt, NaCO formally derived from sodium hydroxide and carbonic acid; it is a white powder, soluble in water, with domestic, commercial and industrial uses; it occurs naturally as natrite Syn: soda …   Wiktionary

  • sodium carbonate — so′dium car′bonate n. 1) chem. Also called soda ash an anhydrous, grayish white, odorless, water soluble powder, Na 2 CO 3 , used in the manufacture of glass, ceramics, soaps, paper, petroleum products, sodium salts, as a cleanser, for bleaching …   From formal English to slang

  • sodium carbonate — /soʊdiəm ˈkabənət/ (say sohdeeuhm kahbuhnuht) noun a compound of sodium, Na2CO3, occurring in an anhydrous form as a white powder, called soda ash, and as a hydrate, Na2CO3.10H2O, known as washing soda …   Australian English dictionary

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