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Meaning of ammonium carbonate

ammo'nium car'bonate

Pronunciation: [key]
— Chem. Chem.
  1. a water-soluble mixture of ammonium bicarbonate and ammonium carbamate, occurring either as a white powder or in colorless, hard, crystalline masses: used chiefly in the manufacture of smelling salts and baking powder.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.