Naphthol Naph"thol, n. [Naphthalene + -ol.] (Chem.) Any one of a series of hydroxyl derivatives of naphthalene, analogous to phenol. In general they are crystalline substances with a phenol (carbolic) odor. [1913 Webster]

{Naphthol blue}, {Naphthol orange}, {Naphthol yellow} (Chem.), brilliant dyestuffs produced from certain complex nitrogenous derivatives of naphthol or naphthoquinone. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • Naphthol — Naphthol. Wie alle Monosubstitutionsprodukte des Naphthalins, existiert auch das Monoxynaphthalin C10H7OH in zwei isomeren Formen, die sich durch ihre physikalischen Eigenschaften sowie durch ihr verschiedenartiges Verhalten gegen einzelne… …   Lexikon der gesamten Technik

  • Naphthol — may refer to: 1 Naphthol 2 Naphthol This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article …   Wikipedia

  • naphthol — [naf′thōl΄, naf′thôl΄; nap′thōl΄, nap′thôl΄] n. [ NAPHTH(ALENE) + OL1] either of two white, crystalline isomeric compounds, C10H7OH, derived from naphthalene and used as antiseptics and in dyes, pharmaceuticals, etc …   English World dictionary

  • Naphthol — Naphthole Name 1 Naphthol 2 Naphthol Andere Namen α Naphthol, 1 Hydroxynaphthalin β Naphthol, 2 Hydroxynaphthalin Strukturformel …   Deutsch Wikipedia

  • naphthol — /naf thawl, thol, nap /, n. Chem. either of two isomeric hydroxyl derivatives, C10H7OH, of naphthalene (alpha naphthol or 1 naphthol and beta naphthol or 2 naphthol), white or yellowish crystals, with a phenolic odor, that darken on exposure to… …   Universalium

  • naphthol — A phenol of naphthalene, occurring in two forms: α n., a dye intermediate used in cytochemistry for l arginine localization; β n., also known as isonaphthol, used as an anthelmintic and antiseptic. Both forms are also used in the manufacture of… …   Medical dictionary

  • Naphthol — Naph|thol 〈n. 11; Chem.〉 1. 〈i. e. S.〉 1 N., ein Naphthalinmolekül, das am Kohlenstoff 1 eine Hydroxylgruppe trägt 2. 〈i. w. S.〉 Oberbegriff für verschiedene Naphthalinmoleküle, die eine od. mehrere Hydroxylgruppen im Molekül aufweisen… …   Universal-Lexikon

  • naphthol — noun either of two phenols derived from naphthalene • Hypernyms: ↑phenol • Hyponyms: ↑alpha naphthol, ↑beta naphthol …   Useful english dictionary

  • naphthol AS — noun Usage: usually capitalized N Etymology: German naphthol AS, from naphthol + AS, from anilid anilide + säure acid 1. : a crystalline phenolic anilide HOC10H6CONHC6H5 used as a coupling component for azoic dyes; the anilide of 3 hydroxy 2… …   Useful english dictionary

  • naphthol — /ˈnæfθɒl/ (say nafthol) noun either of two hydroxy derivatives of naphthalene, having the formula C10H7OH, and occurring in coal tar, used as antiseptics and in dye manufacture. See beta naphthol. Also, naphtol /ˈnæftɒl/ (say naftol). {naphth(a)… …  

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