Sodium amalgam

Sodium amalgam
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 amalgam — Sodium amalgam, commonly denoted Na(Hg), is an amalgam, or alloy of mercury, with sodium metal. When metallic sodium is dissolved in mercury, it reacts exothermically to produce the intermetallic compound NaHg2, with enough heat to cause… …   Wikipedia

  • sodium amalgam — noun an alloy of sodium and mercury; used as a powerful reducing agent, and in certain types of sodium lamp …   Wiktionary

  • Sodium peroxide — Sodium peroxide …   Wikipedia

  • 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… …   The Collaborative International Dictionary of English

  • 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 …   The Collaborative International Dictionary of English

  • Sodium chloride — 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 …   The Collaborative International Dictionary of English

  • sodium hydrate — 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 …   The Collaborative International Dictionary of English

  • 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 …   The Collaborative International Dictionary of English

  • amalgam — /euh mal geuhm/, n. 1. an alloy of mercury with another metal or metals. 2. an alloy that consists chiefly of silver mixed with mercury and variable amounts of other metals and is used as a dental filling. 3. a rare mineral, an alloy of silver… …   Universalium

  • sodium — /soh dee euhm/, n. 1. Chem. a soft, silver white, metallic element that oxidizes rapidly in moist air, occurring in nature only in the combined state, and used in the synthesis of sodium peroxide, sodium cyanide, and tetraethyllead: a necessary… …   Universalium

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