ammonium hydroxide

noun Chemistry.
a basic compound, NH 4 OH, existing only in solution, formed by dissolving ammonia gas in water.
Compare ammonia.


Origin:
1900–05

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Collins
World English Dictionary
ammonium hydroxide
 
n
Also called: aqueous ammonia a compound existing only in aqueous solution, formed when ammonia dissolves in water to form ammonium ions and hydroxide ions. Formula: NH4OH

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
ammonium hydroxide  
A colorless, basic, aqueous solution of ammonia used as a household cleanser and in the manufacture of a wide variety of products, including textiles, rayon, rubber, fertilizer, and plastic. Chemical formula: NH4OH.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

ammonium hydroxide

solution of ammonia gas in water, a common commercial form of ammonia. It is a colourless liquid with a strong characteristic odour. In concentrated form, ammonium hydroxide can cause burns on contact with the skin; ordinary household ammonia, used as a cleanser, is dilute ammonium hydroxide.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
It dissolves readily in water to form ammonium hydroxide, a corrosive and alkaline solution, in high concentrations.
Ammonia gas dissolves easily in water to form ammonium hydroxide, a caustic solution and weak base.
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