Methyl Meth"yl, n. [See {Methylene}.] (Chem.) A univalent hydrocarbon radical, {CH3-}, not existing alone but regarded as an essential residue of methane, and appearing as a component part of many derivatives; as, methyl alcohol, methyl ether, methyl amine, etc. [Formerly written also {methule}, {methyle}, etc.] [1913 Webster]

{Methyl alcohol} (Chem.), a light, volatile, inflammable liquid, {CH3.OH}, obtained by the distillation of wood, and hence called {wood alcohol} or {wood spirit}; tecnically referred to as {methanol}; -- called also {methol}, {carbinol}, etc.

{Methyl amine} (Chem.), a colorless, inflammable, alkaline gas, {CH3.NH2}, having an ammoniacal, fishy odor. It is produced artificially, and also occurs naturally in herring brine and other fishy products. It is regarded as ammonia in which a third of its hydrogen is replaced by methyl, and is a type of the class of substituted ammonias.

{Methyl ether} (Chem.), a light, volatile ether {CH3.O.CH3}, obtained by the etherification of methyl alcohol; -- called also {methyl oxide} or {dimethyl ether}.

{Methyl green}. (Chem.) See under {Green}, n.

{Methyl orange}. (Chem.) See {Helianthin}.

{Methyl violet} (Chem.), an artificial dye, consisting of certain methyl halogen derivatives of rosaniline. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • methyl — univalent hydrocarbon radical, 1840, from Ger. methyl (1840) or directly from Fr. méthyle, back formation from Fr. méthylène (see METHYLENE (Cf. methylene)) …   Etymology dictionary

  • Methyl — Methyl, C2H3, das Radical des Holzgeistes u. seiner Verbindungen. Man hat es in neuerer Zeit isolirt dargestellt durch die Einwirkung von Kalium auf Cyanäthyl, ferner bei der Zersetzung des essigsauren Kalis durch den galvanischen Strom, endlich… …   Pierer's Universal-Lexikon

  • Methyl — CH3, einwertiges Radikal, das in zahlreichen organischen Verbindungen auftritt, im freien Zustand aber nicht existieren kann. Bei dem Versuch, es zu isolieren, vereinigen sich 2 Moleküle M. zu Dimethyl (Äthan, s. d.) C2H6 …   Meyers Großes Konversations-Lexikon

  • Methyl — Methȳl, einwertiges organisches Radikal, gibt mit Wasserstoff Methan (Grubengas), mit Hydroxyl den Methylalkohol; bei der Abscheidung aus Verbindungen vereinigen sich zwei Methyle zu Äthan …   Kleines Konversations-Lexikon

  • Methyl... — Methyl...   [französisch méthyle, rückgebildet aus méthylène »Holzgeist«, zu griechisch méthy »Wein« und hýlē »Holz«], Bezeichnung der chemischen Nomenklatur für die Atomgruppe CH3 …   Universal-Lexikon

  • methyl — ► NOUN Chemistry ▪ the radical CH3, derived from methane. ORIGIN from Greek methu wine + hul wood …   English terms dictionary

  • methyl — [meth′əl] n. [Fr méthyle, back form. < méthylène: see METHYLENE] the monovalent hydrocarbon radical CH3, normally existing only in combination, as in methanol methylic [me thil′ik] adj …   English World dictionary

  • Methyl-K — Chembox new ImageFile = Methyl K.png ImageSize = IUPACName = 1 (1,3 benzodioxol 5 yl) N methylpentan 2 amine OtherNames = Section1 = Chembox Identifiers CASNo = PubChem = SMILES = C1=C2C(=CC=C1CC(NC)CCC)OCO2 Section2 = Chembox Properties Formula …   Wikipedia

  • méthyl- — ⇒MÉTH(YL) , (MÉTH , MÉTHYL )élém. de compos. Élém. représentant le subst. méthyle dans un certain nombre de composés du domaine de la chim.; le 2e élém. est le plus souvent soudé. A. Méth . V. méthacrylique, méthane, méthionine et aussi:… …   Encyclopédie Universelle

  • methyl- — (= CH3) Specific reference to the methyl group is made when macromolecules are modified after synthesis by enzymic addition of methyl groups. The group is transferred to nucleic acids and proteins. See also methyl transferase and DNA methylation …   Dictionary of molecular biology

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