oxalic acid


oxalic acid
An acid, HOOC–COOH, found in many plants and vegetables, particularly in buckwheat (family Polygoniaceae) and Oxalis (family Oxalidaceae); used as a hemostatic in veterinary medicine, but toxic in elevated levels when ingested by humans; also used in the removal of ink and other stains, and as a general reducing agent; salts of o. are found in renal calculi; accumulates in cases of primary hyperoxaluria.

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ox·al·ic acid (.)äk-.sal-ik- n a poisonous strong acid (COOH)2 or H2C2O4 that occurs in various plants as oxalates and is used esp. as a bleaching or cleaning agent and as a chemical intermediate

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an extremely poisonous acid, C2H2O4. It is a component of some bleaching powders and is found in many plants, including sorrel and the leaves of rhubarb. Oxalic acid is a powerful local irritant; when swallowed it produces burning sensations in the mouth and throat, vomiting of blood, breathing difficulties, and circulatory collapse. Treatment is with calcium lactate or other calcium salts, lime water, or milk.

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ox·al·ic ac·id (ok-salґik) HOOC·COOH, a strong dicarboxylic acid found in foods such as spinach and rhubarb or produced in the body by metabolism of glyoxylic acid or ascorbic acid; it is not metabolized but excreted in the urine. Ingestion of a diet rich in oxalates or a genetic disorder of glycine metabolism (primary hyperoxaluria) may lead to the formation of oxalate calculi in the urinary tract. See also oxalate poisoning, under poisoning.

Medical dictionary. 2011.

Look at other dictionaries:

  • Oxalic acid — Oxalic acid …   Wikipedia

  • Oxalic acid — Oxalic Ox*al ic, a. [From {Oxalis}: cf. F. oxalique.] (Chem.) Pertaining to, derived from, or contained in, sorrel, or oxalis; specifically, designating an acid found in, and characteristic of, oxalis, and also certain plant of the Buckwheat… …   The Collaborative International Dictionary of English

  • oxalic acid — [äk sal′ik] n. [Fr oxalique < L oxalis: see OXALIS] a colorless, poisonous, crystalline acid, (COOH) 2, found in oxalis and other plants or prepared synthetically and used in dyeing, bleaching, etc …   English World dictionary

  • oxalic acid — Chem. a white, crystalline, water soluble, poisonous acid, H2C2O4·2H2O, first discovered in the juice of the wood sorrel species of oxalis and obtained by reacting carbon monoxide with sodium hydroxide or certain carbohydrates with acids or… …   Universalium

  • oxalic acid — an extremely poisonous acid, C2H2O4. It is a component of some bleaching powders and is found in many plants, including sorrel and the leaves of rhubarb. Oxalic acid is a powerful local irritant; when swallowed it produces burning sensations in… …   The new mediacal dictionary

  • oxalic acid — oksalo rūgštis statusas T sritis chemija formulė (HOOC)₂ atitikmenys: angl. oxalic acid rus. щавелевая кислота ryšiai: sinonimas – etano dirūgštis sinonimas – rūgštynių rūgštis …   Chemijos terminų aiškinamasis žodynas

  • oxalic acid — /ɒkˌsælɪk ˈæsəd/ (say ok.salik asuhd) noun a white, crystalline, dibasic acid, (COOH)2.2H2O, first discovered in the juice of a species of oxalis (wood sorrel), used in textile and dye manufacturing, in bleaching, etc. {oxalic, from French… …   Australian English dictionary

  • oxalic acid — noun A colourless, crystalline dicarboxylic acid, (COOH), found in rhubarb, spinach and other plants, often as crystals of the calcium salt. Syn: acid of sugar, ethandioic acid …   Wiktionary

  • oxalic acid — noun Etymology: French (acide) oxalique, from Latin oxalis Date: 1790 a poisonous strong acid (COOH)2 or H2C2O4 that occurs in various plants (as spinach) as oxalates and is used especially as a bleaching or cleaning agent and as a chemical… …   New Collegiate Dictionary

  • oxalic acid — [ɒk salɪk] noun Chemistry a poisonous crystalline organic acid, present in rhubarb leaves, wood sorrel, and other plants. Origin C18: from Fr. oxalique, via L. from Gk oxalis wood sorrel …   English new terms dictionary


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