ammonium carbonate

noun Chemistry.
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.

Origin:
1880–85

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World English Dictionary
ammonium carbonate
 
n
1.  an unstable pungent soluble white powder that is a double salt of ammonium bicarbonate and ammonium carbamate: used in the manufacture of baking powder, smelling salts, and ammonium compounds. Formula: (NH4)HCO3.(NH4)CO2NH2
2.  an unstable substance that is produced by treating this compound with ammonia. Formula: (NH4)2CO3

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

ammonium carbonate n.

  1. A carbonate of ammonium.

  2. The double salt of ammonium bicarbonate and ammonium carbamate, produced commercially and used in powder form in smelling salts.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Ammonium carbonate-for use only as a leavening agent.
In particular, the apple volatiles attracted nearly as many flies as the ammonium carbonate lure.
Ammonium carbonate--for use only as a leavening agent.
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