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ammonium carbonate

American  

noun

Chemistry.
  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.


ammonium carbonate British  

noun

  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: (NH 4 )HCO 3 .(NH 4 )CO 2 NH 2

  2. an unstable substance that is produced by treating this compound with ammonia. Formula: (NH 4 ) 2 CO 3

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of ammonium carbonate

First recorded in 1880–85

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A dozen cleaning agents were proposed before the restorers settled on a solution of distilled water and 25% ammonium carbonate.

From Time Magazine Archive

This is the cause of boiler scale, and to check this a small amount of sal ammoniac may be added to the water, which converts the carbonate into soluble calcium chloride and volatile ammonium carbonate.

From Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. by Thomssen, E. G.

C. It is prepared by the action of ammonium carbonate on benzoyl chloride.

From The Project Gutenberg Encyclopedia Volume 1 of 28 by Project Gutenberg

It has been suggested that urea is formed by polymerization of ammonium carbonate, and formic aldehyde is synthesized from CO2 and OH2.

From Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy" by Various

Add to the filtrate about 1.5 gram of ammonium carbonate; evaporate to about 40 c.c., and add a little more ammonic carbonate and some ammonia.

From A Text-book of Assaying: For the Use of Those Connected with Mines. by Beringer, Cornelius

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