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orthophosphoric acid

[awr-thoh-fos-fawr-ik, -for-, awr-]

noun

Chemistry.
  1. a colorless, crystalline solid, H 3 PO 4 , the tribasic acid of pentavalent phosphorus: used chiefly in fertilizers, as a source of phosphorus salts, and in soft drinks as an acidulant and flavoring agent.



orthophosphoric acid

/ ˌɔːθəʊfɒsˈfɒrɪk /

noun

  1. Also called: phosphoric acida colourless soluble solid tribasic acid used in the manufacture of fertilizers and soaps. Formula: H 3 PO 4

“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
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Word History and Origins

Origin of orthophosphoric acid1

First recorded in 1870–75; ortho- + phosphoric acid
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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.

Write the equations for the preparation of the three sodium salts of orthophosphoric acid.

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These facts may be illustrated with the aid of orthophosphoric acid, which is tribasic:— Acid.

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orthophosphateorthophosphorous acid