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oxalic acid
ox·al·ic acid O0204500 (ŏk-săl′ĭk)n. A poisonous, colorless crystalline dicarboxylic acid, C2H2O4, found in many plants, such as spinach, and used as a bleach and rust remover.
[Latin oxalis, wood sorrel; see oxalis + -ic.]oxalic acid (ɒkˈsælɪk) n (Elements & Compounds) a colourless poisonous crystalline dicarboxylic acid found in many plants: used as a bleach and a cleansing agent for metals. Formula: (COOH)2. Systematic name: ethanedioic acid [C18: from French oxalique, from Latin oxalis garden sorrel; see oxalis]ox•al′ic ac′id (ɒkˈsæl ɪk)
n. a white, crystalline, water-soluble, poisonous acid, H2C2O4∙2H2O, used chiefly for bleaching, as a cleanser, and as a laboratory reagent. [1785–95; < French oxalique. See oxalis, -ic] ox·al·ic acid (ŏk-săl′ĭk) A poisonous, crystalline acid found in a number of plants. It is used for many industrial purposes, including rust removal and bleaching.Thesaurus| Noun | 1. | oxalic acid - a toxic colorless crystalline organic acid found in oxalis and other plants; used as a bleach and rust remover and in chemical analysisethanedioic acidacid - any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt |
Translations
oxalic acid
oxalic acid (ŏksăl`ĭk) or ethanedioic acid (ĕth'āndīōĭk), HO2CCO2H, a colorless, crystalline organic carboxylic acid that melts at 189°C; with sublimation. Oxalic acid and oxalate salts are poisonous. Oxalic acid is found in many plants, e.g., sorrel and rhubarb, usually as its calcium or potassium salts. Oxalic acid is the only possible compound in which two carboxyl groupscarboxyl group
, in chemistry, functional group that consists of a carbon atom joined to an oxygen atom by a double bond and to a hydroxyl group, OH, by a single bond. Carboxylic acids are compounds whose molecules contain a carboxyl group that is joined to a hydrogen atom, an
..... Click the link for more information. are joined directly; for this reason oxalic acid is one of the strongest organic acids. Unlike other carboxylic acids (except formic acidformic acid
or methanoic acid
, HCO2H, a colorless, corrosive liquid with a sharp odor; it boils at 100.7°C; and solidifies at 8.4°C;. It has the lowest molecular weight and is the simplest of the carboxylic acids.
..... Click the link for more information. ), it is readily oxidized; this makes it useful as a reducing agent for photography, bleaching, and ink removal. Oxalic acid is usually prepared by heating sodium formate with sodium hydroxide to form sodium oxalate, which is converted to calcium oxalate and treated with sulfuric acid to obtain free oxalic acid.Oxalic Acid HOOC—COOH, the simplest dibasic carboxylic acid. A colorless crystalline compound, oxalic acid has a melting point of 189.5°C. Its solubility in water is 10 g per 100 g H2O at 20°C and 120 g at 100°C. Oxalic acid is poorly soluble in alcohol and ether and is insoluble in benzene and chloroform. It is a relatively strong acid (K125 = 3.6 × 10–2). It forms the hydrate C2H2O42H2O (melting point, 101.5°C), as well as acid and neutral salts (oxalates), esters, amides, and other derivatives. Salts of oxalic acid are found in plants—for example, its acid potassium salt is found in sorrel (genus Oxalis, hence the name). The acid forms in tissues as a metabolic product and, together with the oxalic acid in food, is excreted with urine as potassium oxalate. Oxalates participate in the formation of stones in the kidneys and urinary bladder in cases of disorders of mineral metabolism. Oxalic acid is formed in oxalic acid fermentation. Oxalic acid was first synthesized in 1842 by F. Wöhler from cyanogen. It is produced industrially by the pyrolysis of sodium formate, HCOONa. It is used as mordant in cloth printing; it is also used in the production of dyes and inks, as a bleaching agent, and as a precipitating agent for rare earths. oxalic acid[äk′sal·ik ′as·əd] (organic chemistry) HOOCCOOH·2H2O Poisonous, transparent, colorless crystals melting at 187°C; soluble in water, alcohol, and ether; used as a chemical intermediate and a bleach, and in polishes and rust removers. oxalic acid a colourless poisonous crystalline dicarboxylic acid found in many plants: used as a bleach and a cleansing agent for metals. Formula: (COOH)2 oxalic acid
oxalic acid [ok-sal´ik] a poisonous dicarboxylic acid found in various fruits and vegetables, and formed in the metabolism of ascorbic acid and ethylene glycol. While it is not usually a problem with normal diets, it is seen in high concentrations in certain ornamental plants (such as Diffenbachia), as well as in some bleaches and antirust products. Persons or animals that chew on the plants or otherwise consume the chemical can be poisoned. Oxalic acid is highly toxic and if ingested vomiting should not be induced. If the person is at home, a poison control center and emergency services should be contacted immediately. The acid can be neutralized by administration of calcium by either the oral or the intravenous route. High urinary oxalate concentrations may cause deposition of kidney stones and other calculi" >urinary calculi. ox·al·ic ac·id (ok-sal'ik as'id), An acid 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 oxalic acid are found in renal calculi; accumulates in cases of primary hyperoxaluria.ox·al·ic ac·id (ok-sal'ik as'id) An acid found in many plants and vegetables; used as a hemostatic in veterinary medicine, but toxic when ingested by humans; also used in the removal of ink and other stains, and as a general reducing agent; salts of oxalic acid are found in renal calculi; accumulates in cases of primary hyperoxaluria. ox·al·ic ac·id (ok-sal'ik as'id) Acid found in many plants and vegetables; toxic in elevated levels when ingested by humans; also used in the removal of ink and other stains, and as a general reducing agent. oxalic acid
Related to oxalic acid: oxalic acid poisoningSynonyms for oxalic acidnoun a toxic colorless crystalline organic acid found in oxalis and other plantsSynonymsRelated Words |