- Orthophosphoric acid; a strong acid of industrial importance; m.p. 42.35°C; dilute solutions have been used as urinary acidifiers and as dressings to remove necrotic debris. In dentistry, it constitutes about 60% of the liquid used in zinc phosphate and silicate cements; solutions in varying concentrations are used for etching enamel and dentin surfaces prior to applications of various types of resins.- cyclic p. 1. in general, a linear polymer of p. residues in pyrophosphate linkage in which the α and ω residues are similarly linked to make one endless loop or cyclic compound; 2. specifically, a generic term applied to compounds in which one p. residue is esterified to two hydroxyl groups of a single carbon chain, as in adenosine 3′,5′-p., adenosine 2′,3′-p., etc.- glacial p. an anhydride of p. used as a reagent and in the manufacture of zinc oxyphosphate cement for dentistry. SYN: metaphosphoric acid.
* * *phosphoric acid n1) a syrupy or deliquescent tribasic acid H3PO4 used esp. in preparing phosphates (as for fertilizers), in rust-proofing metals, and esp. formerly as a flavoring in soft drinks called also orthophosphoric acid2) a compound (as pyrophosphoric acid or metaphosphoric acid) consisting of phosphate groups linked directly to each other by oxygen
* * *phos·phor·ic ac·id (fos-forґik) 1. orthophosphoric acid, the monomeric form H3PO4. 2. a general term encompassing the monomeric (orthophosphoric acid), dimeric (pyrophosphoric acid), and polymeric (metaphosphoric acid) forms of the acid. Phosphoric acid is an important metabolite; see phosphate and specific acids and salts.
Medical dictionary. 2011.
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Phosphoric acid — Phosphoric Phos*phor ic, a. [Cf. F. phosphorique.] 1. (Chem.) Of or pertaining to phosphorus; resembling, or containing, from us; specifically, designating those compounds in which phosphorus has a higher valence as contrasted with the… … The Collaborative International Dictionary of English
phosphoric acid — n. any of several oxygen acids of phosphorus: see ORTHOPHOSPHORIC ACID, METAPHOSPHORIC ACID, and PYROPHOSPHORIC ACID … English World dictionary
phosphoric acid — ► NOUN Chemistry ▪ a crystalline acid obtained by treating phosphates with sulphuric acid … English terms dictionary
Phosphoric acid — This article is about orthophosphoric acid. For other acids commonly called phosphoric acid , see Phosphoric acids and phosphates. Phosphoric acid … Wikipedia
phosphoric acid — Chem. any of three acids, orthophosphoric acid, H3PO4, metaphosphoric acid, HPO3, or pyrophosphoric acid, H4P2O7, derived from phosphorus pentoxide, P2O5, and various amounts of water. [1785 95] * * * ▪ chemical compound also called… … Universalium
phosphoric acid — noun an acid used in fertilizers and soaps: H3PO4 • Syn: ↑orthophosphoric acid • Hypernyms: ↑oxyacid, ↑oxygen acid * * * phosphoric acid f17 [phosphoric acid] [fɒsˌfɒrɪk ˈæsɪd] … Useful english dictionary
phosphoric acid — [[t]fɒsfɒ̱rɪk æ̱sɪd, AM fɔ͟ːr [/t]] N UNCOUNT Phosphoric acid is a type of acid which contains phosphorus. [TECHNICAL] … English dictionary
phosphoric acid — ortofosfato rūgštis statusas T sritis chemija formulė H₃PO₄ atitikmenys: angl. orthophosphoric acid; phosphoric acid rus. ортофосфорная кислота; фосфорная кислота ryšiai: sinonimas – vandenilio tetraoksofosfatas (3–) sinonimas – fosforo rūgštis … Chemijos terminų aiškinamasis žodynas
phosphoric acid — noun Date: 1784 1. a syrupy or deliquescent tribasic acid H3PO4 used especially in preparing phosphates (as for fertilizers), in rust proofing metals, and especially formerly as a flavoring in soft drinks called also orthophosphoric acid 2. a… … New Collegiate Dictionary
phosphoric acid — phosphor′ic ac′id n. chem. any of three acids, orthophosphoric acid, H3PO4, metaphosphoric acid, HPO3, or pyrophosphoric acid, H4P2O7, derived from phosphorus pentoxide, P2O5, and various amounts of water … From formal English to slang