/si"treuhl/, n. Chem.
a pale yellow, water-insoluble, liquid aldehyde, C10H16O, having a strong lemonlike odor, consisting in natural form of two isomers (citral a or geranial and citral b or neral), usually obtained from the oils of lemon and orange or synthetically: used chiefly in perfumery, flavoring, and the synthesis of vitamin A.
[1890-95; CITR(US) + -AL1]

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also called  3,7-dimethyl-2,6-octadienal 

      a pale yellow liquid, with a strong lemon odour, that occurs in the essential oils (essential oil) of plants. It is insoluble in water but soluble in ethanol ( ethyl alcohol), diethyl ether (ethyl ether), and mineral oil. It is used in perfumes (perfume) and flavourings (flavouring) and in the manufacture of other chemicals. Chemically, citral is a mixture of two aldehydes (aldehyde) that have the same molecular formula but different structures.

      Lemongrass oil contains 70–80 percent citral, which may be isolated by distillation. Other natural sources include the oils of Verbena and citronella (citronella oil). Citral can be synthesized from myrcene. Ionone and methylionone, made from citral, are used in perfumery; ionone is also converted into synthetic vitamin A.

William H. Brown

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Universalium. 2010.

Look at other dictionaries:

  • Citral — Citral[1] …   Wikipedia

  • citral — ● citral nom masculin Dénomination courante d un aldéhyde monoterpénique que l on rencontre dans les essences de citron, de lemon grass et de verveine. (Outre son usage comme parfum de citron, le citral est employé pour la synthèse de l ionone,… …   Encyclopédie Universelle

  • Citrāl — (Geranial) C10H16O, ein Aldehyd, der sich im Zitronenöl, Lemongrasöl (70–80 Proz.), im Pomeranzenöl, im westindischen Limettöl, im Melissenöl, Bay und Pimentöl, im japanischen Pfefferöl, im Sassafrasblätteröl und im Öl von Eucalyptus Staigeriana… …   Meyers Großes Konversations-Lexikon

  • Citral — Citral, s. Riechstoffe, künstliche …   Lexikon der gesamten Technik

  • citral — cìtrāl m <G citrála> DEFINICIJA kem. terpenski aldehid, sastavni dio mnogih eteričnih ulja (limun, naranča i dr.) ETIMOLOGIJA lat. citrus ← grč. kítron: limun + al …   Hrvatski jezični portal

  • citral — [si′trəl] n. [ CITR(I) + AL(DEHYDE)] a liquid aldehyde, C9H15·CHO, with a pleasant odor, found in oil of lemon, oil of lime, etc. and used as a flavoring agent and in perfumes …   English World dictionary

  • Citral — Strukturformel links Geranial (Citral A), rechts Neral (Citral B) …   Deutsch Wikipedia

  • Citral — Citrals néral (haut) et géranial (bas) Général Nom IUPAC 3,7 diméthyl 2,6 octadiènal …   Wikipédia en Français

  • Citral — Ci|t|ral [lat. citrus = Zitronenbaum (↑ Citronensäure) ↑ al], das; s; Syn.: 3,7 Dimethylocta 2,6 dien: nach Zitrone riechendes fl. Stereoisomerengemisch aus Geranial (trans oder (E) Citral, früher: C. a) u. Neral ( …   Universal-Lexikon

  • citral — ˈsi.ˌtral noun ( s) Etymology: International Scientific Vocabulary citr + al : an unsaturated liquid aldehyde C9H15CHO that has a strong lemon and verbena odor, is found in many essential oils (as lemon oil and citronella oil), is used in… …   Useful english dictionary

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