Learn more about citing Wikipedia.
From Wikipedia, the free encyclopedia
(Redirected from Monoammonium phosphate)
Jump to: navigation, search
This article does not cite any references or sources. (June 2008)
Please help improve this article by adding citations to reliable sources. Unverifiable material may be challenged and removed.
Ammonium phosphate - Molecular Mass = 149.12g/mol. The normal ammonium phosphate, (NH4)3PO4, is obtained as a crystalline powder, on mixing concentrated solutions of ammonia and phosphoric acid, or on the addition of excess of ammonia to the acid phosphate (NH4)2HPO4. It is soluble in water, and the aqueous solution on boiling loses ammonia and the acid phosphate NH4H2PO4 is formed. Ammonium phosphate is used as an ingredient in some fertilizers as a high source of elemental nitrogen.
Diammonium hydrogen phosphate, or diammonium phosphate, (NH4)2HPO4, is formed by evaporating a solution of phosphoric acid with excess of ammonia. It crystallizes in large transparent prisms, which melt on heating and decompose, leaving a residue of metaphosphoric acid, (HPO3).
Ammonium dihydrogen phosphate, or monoammonium phosphate, NH4•H2PO4, is formed when a solution of phosphoric acid is added to ammonia until the solution is distinctly acid. It crystallizes in quadratic prisms. Monoammonium phosphate is often used in the blending of dry agricultural fertilizers. It supplies soil with the elements nitrogen and phosphorus in a form which is usable by plants. The compound is also a component of the ABC powder in some dry chemical fire extinguishers.
This inorganic compound-related article is a stub. You can help Wikipedia by expanding it.
Retrieved from "http://en.wikipedia.org/wiki/Ammonium_phosphate"
Categories: Phosphates | Ammonium compounds | Fire suppression agents | Inorganic compound stubs
Hidden categories: Articles lacking sources from June 2008 | All articles lacking sourcesViewsArticle Discussion Edit this page History Personal toolsLog in / create account Navigation
Donate to Wikipedia
What links here
Cite this page
This page was last modified on 22 June 2008, at 19:57. All text is available under the terms of the GNU Free Documentation License. (See Copyrights for details.)
Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a U.S. registered 501(c)(3) tax-deductible nonprofit charity.