ammonia alum

Definitions

  • WordNet 3.6
    • n ammonia alum a white crystalline double sulfate of aluminum: the ammonium double sulfate of aluminum
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Usage

In literature:

The substances employed for this purpose are borax, alum, soluble glass, and phosphate of ammonia.
"The Art of Travel" by Francis Galton
Potash alum is most commonly used, soda and ammonia alums to a less extent.
"Human Foods and Their Nutritive Value" by Harry Snyder
Free from Ammonia, Alum, or any other adulterant.
"Harper's Round Table, April 30, 1895" by Various
Free from Ammonia, Alum, or any other adulterant.
"Harper's Round Table, May 7, 1895" by Various
The alum produced would, in any event, be mostly ammonia alum.
"De Re Metallica" by Georgius Agricola
On August 13, 1878, I obtained letters patent for the exclusive right to use exsiccated ammonia alum in baking powders.
"Scientific American, Vol. XXXIX.--No. 24. [New Series.], December 14, 1878" by Various
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