Mesoxalic acid

Mesoxalic acid
Mesoxalic acid
CAS number 473-90-5
PubChem 10132
ChemSpider 9727 YesY
DrugBank DB03589
KEGG C00830 YesY
ChEBI CHEBI:30842 YesY
Jmol-3D images Image 1
Molecular formula C3H2O5
Molar mass 118.04 g mol−1
 YesY acid (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Mesoxalic acid, also called oxomalonic acid or ketomalonic acid, is an organic compound with formula C3H2O5 or HO-(C=O)3-OH.

Mesoxalic acid is both a dicarboxylic acid and a ketonic acid. It readily loses two protons to yield the divalent anion C3O52−, called mesoxalate, oxomalonate, or ketomalonate. These terms are also used for salts containing this anion, such as sodium mesoxalate, Na2C3O5); and for esters containing the -C3O5- or -O-(C=O)3-O- moiety, such as diethyl mesoxalate, C2H5)2C3O5. Mesoxalate is one of the oxocarbon anions, which (like carbonate CO32− and oxalate C2O42−) consist solely of carbon and oxygen.

Mesoxalic acid readily absorbs and reacts with water to form a product commonly called "mesoxalic acid (mono)hydrate", more properly dihydroxymalonic acid, HO-(C=O)-C(OH)2-(C=O)-OH.[1] In product catalogs and other contexts, the terms "mesoxalic acid", "oxomalonic acid", etc. often refer to this "hydrated" compound. In particular, the product traded as "sodium mesoxalate monohydrate" is almost always sodium dihydroxymalonate.


Mesoxalic acid can be obtained synthetically by hydrolysis of alloxan with baryta water,[1] by warming caffuric acid with lead acetate solution,[1] or from glycerin diacetate and concentrated nitric acid in the cold. The product can be obtained also by oxidation of tartronic acid [2] or glycerol.[3] Since they are carried out in water, these procedures generally give the dihydroxy derivative.

See also


  1. ^ a b c Henry Enfield Roscoe (1888), A Treatise on Chemistry, volume 3, part2 Organic Chemistry, p. 161. D. Appleton and Co., New York.
  2. ^ Rosaria Ciriminna and Mario Pagliaro (2004), Oxidation of tartronic acid and dihydroxyacetone to sodium mesoxalate mediated by TEMPO. Tetrahedron Letters, volume 45, issue 34, pp. 6381–6383. doi:10.1016/j.tetlet.2004.07.021
  3. ^ Rosaria Ciriminna and Mario Pagliaro (2003), One-Pot Homogeneous and Heterogeneous Oxidation of Glycerol to Ketomalonic Acid Mediated by TEMPO. Advanced Synthesis & Catalysis, volume 345, issue 3, Pages 383–388. doi:10.1002/adsc.200390043

Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • mesoxalic acid — mezoksalo rūgštis statusas T sritis chemija formulė (HOOC)₂CO atitikmenys: angl. mesoxalic acid rus. мезоксалевая кислота ryšiai: sinonimas – oksopropano dirūgštis …   Chemijos terminų aiškinamasis žodynas

  • mesoxalic acid — |me]ˌzäk|salik , |mē], ]ˌsäk|salik noun Etymology: mes + oxalic acid : a crystalline acid CO(COOH)2 or C(OH)2(COOH)2 made especially by oxidation of amino malonic acid …   Useful english dictionary

  • Mesoxalic — Mes ox*al ic, a. [Mes + oxalic.] (Chem.) Pertaining to, or designating, an acid, {CH2O2(CO2H)2}, obtained from amido malonic acid. [1913 Webster] …   The Collaborative International Dictionary of English

  • Dihydroxymalonic acid — IUPAC name 2,2 Dihydroxypropanedioic acid …   Wikipedia

  • Tartronic acid — Chembox new ImageFile = Tartronic acid.png ImageSize = IUPACName = 2 Hydroxypropanedioic acid OtherNames = Tartronic acid, 2 tartronic acid, hydroxymalonic acid, 2 hydroxymalonic acid, hydroxypropanedioic acid Section1 = Chembox Identifiers CASNo …   Wikipedia

  • Dioxosuccinic acid — Identifiers CAS number …   Wikipedia

  • tartronic acid — (ˈ)tär.|tränik noun Etymology: French tartronique, from tartr + onique (as in malonique malonic) : a crystalline hydroxy acid HOCH(COOH)2 obtained by reducing mesoxalic acid and by hydrolysis of bromo malonic acid; hydroxy malonic acid …   Useful english dictionary

  • Martinet dioxindole synthesis — The Martinet dioxindole synthesis is a chemical reaction used to synthesize dioxindoles 3 from anilines and esters of mesoxalic acid 1.[1][2] Reaction mechanism Heating a N substituted aniline in the presence …   Wikipedia

  • Tartronsäure — Strukturformel Allgemeines Name Tartronsäure Andere Namen …   Deutsch Wikipedia

  • mesoxalyl — mə̇ˈzäksələ̇l, ˈsä noun Etymology: International Scientific Vocabulary mesoxalic + yl : the bivalent radical CO(CO)2 or C(OH)2(CO)2 of mesoxalic acid …   Useful english dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”