sal soda /ˈsælˈsodə/ 名詞
 純鹼,碳酸鈉,蘇打晶鹼,結晶碳酸鈉


 Sal·so·da n. See Sal soda, under Sal.

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 Sal n.  Chem. & Pharm. Salt.
 Sal absinthii [NL.] Old Chem., an impure potassium carbonate obtained from the ashes of wormwood (Artemisia Absinthium).
 Sal acetosellae [NL.] Old Chem., salt of sorrel.
 Sal alembroth. Old Chem. See Alembroth.
 Sal ammoniac Chem., ammonium chloride, NH4Cl, a white crystalline volatile substance having a sharp salty taste, obtained from gas works, from nitrogenous matter, etc. It is largely employed as a source of ammonia, as a reagent, and as an expectorant in bronchitis. So called because originally made from the soot from camel's dung at the temple of Jupiter Ammon in Africa. Called also muriate of ammonia.
 Sal catharticus [NL.] Old Med. Chem., Epsom salts.
 Sal culinarius [L.] Old Chem., common salt, or sodium chloride.
 Sal Cyrenaicus. [NL.] Old Chem. See Sal ammoniac above.
 Sal de duobus, Sal duplicatum [NL.] Old Chem., potassium sulphate; -- so called because erroneously supposed to be composed of two salts, one acid and one alkaline.
 Sal diureticus [NL.] Old Med. Chem., potassium acetate.
 Sal enixum [NL.] Old Chem., acid potassium sulphate.
 Sal gemmae [NL.] Old Min., common salt occuring native.
 Sal Jovis [NL.] Old Chem., salt tin, or stannic chloride; -- the alchemical name of tin being Jove.
 Sal Martis [NL.] Old Chem., green vitriol, or ferrous sulphate; -- the alchemical name of iron being Mars.
 Sal microcosmicum [NL.] Old Chem. See Microcosmic salt, under Microcosmic.
 Sal plumbi [NL.] Old Chem., sugar of lead.
 Sal prunella. Old Chem. See Prunella salt, under 1st Prunella.
 Sal Saturni [NL.] Old Chem., sugar of lead, or lead acetate; -- the alchemical name of lead being Saturn.
 Sal sedativus [NL.] Old Chem., sedative salt, or boric acid.
 Sal Seignette [F. seignette, sel de seignette] Chem., Rochelle salt.
 Sal soda Chem., sodium carbonate. See under Sodium.
 Sal vitrioli [NL.] Old Chem., white vitriol; zinc sulphate.
 Sal volatile. [NL.] (a) Chem. See Sal ammoniac, above. (b) Spirits of ammonia.

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 So·da n.
 1. Chem. (a) Sodium oxide or hydroxide. (b) Popularly, sodium carbonate or bicarbonate.  Sodium bicarbonate is also called baking soda
 Caustic soda, sodium hydroxide.
 Cooking soda, sodium bicarbonate. [Colloq.]
 Sal soda. See Sodium carbonate, under Sodium.
 Soda alum Min., a mineral consisting of the hydrous sulphate of alumina and soda.
 Soda ash, crude sodium carbonate; -- so called because formerly obtained from the ashes of sea plants and certain other plants, as saltwort (Salsola). See under Sodium.
 Soda fountain, an apparatus for drawing soda water, fitted with delivery tube, faucets, etc.
 Soda lye, a lye consisting essentially of a solution of sodium hydroxide, used in soap making.
 Soda niter. See Nitratine.
 Soda salts, salts having sodium for the base; specifically, sodium sulphate or Glauber's salts.
 Soda waste, the waste material, consisting chiefly of calcium hydroxide and sulphide, which accumulates as a useless residue or side product in the ordinary Leblanc process of soda manufacture; -- called also alkali waste.
 Washing soda, sodium carbonate. [Colloq.]

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 So·di·um n.  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.
 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.

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 sal soda
      n : a sodium salt of carbonic acid; used in making soap powders
          and glass and paper [syn: sodium carbonate, {washing
          soda, soda ash, soda]