About: Rhodizonic acid

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Rhodizonic acid is a chemical compound with formula C6H2O6 or (CO)4(COH)2. It can be seen as a twofold enol and fourfold ketone of cyclohexene, more precisely 5,6-dihydroxycyclohex-5-ene-1,2,3,4-tetrone. Rhodizonic acid is usually obtained in the form of a dihydrate C6H2O6·2H2O. The latter is actually 2,3,5,5,6,6-hexahydroxycyclohex-2-ene-1,4-dione, where two of the original ketone groups are replaced by two pairs of geminal diols. The orange to deep-red and highly hygroscopic anhydrous acid can be obtained by low-pressure sublimation of the dihydrate.

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rdf:type	Thing dul:ChemicalObject chemical substance Chemical compound yago:WikicatAromaticCompounds yago:WikicatMolecularFormulas yago:Abstraction100002137 yago:Acid114607521 yago:Agent114778436 yago:Alcohol107884567 yago:AromaticCompound114610088 yago:Beverage107881800 yago:CausalAgent100007347 yago:Chemical114806838 yago:Communication100033020 yago:Compound114818238 yago:Drug103247620 yago:DrugOfAbuse103248958 yago:Fluid114939900 yago:Food100021265 yago:Formula106816935 yago:Hydrocarbon114911057 yago:Ketone114926294 yago:Liquid114940386 yago:Material114580897 yago:Matter100020827 yago:Message106598915 yago:MolecularFormula106817173 yago:OrganicCompound114727670 yago:Part113809207 yago:PhysicalEntity100001930 yago:Relation100031921 yago:WikicatKetones chemical compound yago:Statement106722453 yago:Substance100019613 yago:Substance100020090 yago:WikicatAcids yago:WikicatAlcohols
rdfs:label	Rhodizonsäure (de) Acide rhodizonique (fr) Acido rodizonico (it) Rhodizonzuur (nl) Rhodizonic acid (en) 玫棕酸 (zh)
rdfs:comment	Rhodizonsäure ist eine chemische Verbindung aus der Gruppe der Oxokohlenstoffe. (de) L'acido rodizonico è un composto chimico di formula C6H2O6 oppure (CO)4(COH)2. Si può considerare come un enolo doppio e un chetone quadruplo del cicloesene. (it) 玫棕酸（英語：Rhodizonic acid）是化学式为C6H2O6或(CO)4(COH)2的化合物。它可以看作是环己烯的二重烯醇和四重酮。玫棕酸通常以二水合物C6H2O6 · 2H2O的形式获得。后者实际上是2,3,5,5,6,6-六羟基环己-2-烯-1,4-二酮，其中两个原始酮基团被两对偕二醇取代。二水合物经低压升华可得橙色至深红色、吸湿性强的无水酸。与许多其他烯醇一样，玫棕酸可以从羟基中失去氢正离子H+（pKa1 = 4.378±0.009, pKa2 = 4.652±0.014 at 25 °C）产生玫棕酸氢根阴离子C6HO−6和玫棕酸根阴离子C6O2−6。后者芳香族和对称，因为双键的离域电子均匀分布在六个CO单元上。玫棕酸盐往往具有各种深浅不一的红色，从淡黄色到紫色。玫棕酸已用于钡、铅和其他金属的化学分析。特别是玫棕酸钠测试可用于检测受试者手中的（其中含铅），并区分箭伤和枪伤以执行狩猎法规。 (zh) L'acide rhodizonique est un composé organique de formule brute C6H2O6 ou (CO)4(COH)2. il peut être vu comme le double énol du cyclohexène tétra cétone. L'acide rhodizonique est habituellement sous la forme d'un dihydrate, C6H2O6·2H2O de numéro CAS 71902-19-7. En fait, ce dihydrate est la 2,3,5,5,6,6-hexahydroxycyclohex-2-ène-1,4-dione de masse molaire 206,107 ± 0,007 6 g·mol-1 (C 34,96 %, H 2,93 %, O 62,1 %) dans laquelle deux groupes cétone de l'acide sont remplacés par deux paires d'hydroxyles géminaux (précurseur de cétal). L'acide anhydre, orange à rouge foncé et très hygroscopique peut être obtenu par sublimation du dihydrate à basse pression. (fr) Rhodizonic acid is a chemical compound with formula C6H2O6 or (CO)4(COH)2. It can be seen as a twofold enol and fourfold ketone of cyclohexene, more precisely 5,6-dihydroxycyclohex-5-ene-1,2,3,4-tetrone. Rhodizonic acid is usually obtained in the form of a dihydrate C6H2O6·2H2O. The latter is actually 2,3,5,5,6,6-hexahydroxycyclohex-2-ene-1,4-dione, where two of the original ketone groups are replaced by two pairs of geminal diols. The orange to deep-red and highly hygroscopic anhydrous acid can be obtained by low-pressure sublimation of the dihydrate. (en) Rhodizonzuur is een chemische verbinding met de formule , of met iets meer nadruk op de structuur ervan: . Het kan beschouwd worden als het tweevoudig enol én het viervoudig keton van cyclohexeen, meer precies als: 5,6-dihydroxy-cyclohex-5-een-1,2,3,4-tetron. (nl)
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dcterms:subject	Aromatic compounds Cyclohexenols Oxocarbons Tetraones Analytical chemistry Enediols
Wikipage page ID	23805592 (xsd:integer)
Wikipage revision ID	1105829330 (xsd:integer)
Link from a Wikipage to another Wikipage	Potassium Potassium acetate Potassium carbonate Proton Rubidium Barium Benzenehexol Deltic acid Charcoal Cyclohexane conformation Carbonyl Double bond Johann Florian Heller Austrian people Aromatic compounds Cyclohexenols Oxocarbons Croconic acid Chemical compound Geminal diol Enol Greek language Ketone Tetraones Acetylenediol Cyclohexanehexone Cyclohexene Nitric acid Root mean square Analytical chemistry Lead (disambiguation) Dodecahydroxycyclohexane Arrow Sodium (disambiguation) Squaric acid Hygroscopic Inositol Enediols Gunshot residue

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