naphthol

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 dyes, organic chemicals, and rubber products. SYN: naphthalenol.

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naph·thol 'naf-.thȯl, 'nap-, -.thōl n either of two isomeric derivatives C10H8O of naphthalene found in coal tar or made synthetically:
a) one used chiefly in synthesizing dyes called also alpha-naphthol
b) one used chiefly as an intermediate (as for dyes and pharmaceuticals) and esp. formerly in medicine as an antiseptic and parasiticide called also beta-naphthol

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naph·thol (nafґthol) a crystalline, antiseptic substance from coal tar occurring in two forms, α- or 1-naphthol and β- or 2-naphthol, used in dyes, organic synthesis, perfumes, insecticides, and formerly in pharmaceutical compounds; it is toxic by ingestion and skin absorption. See also under poisoning.

Medical dictionary. 2011.

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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 — 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} …   The Collaborative International Dictionary of English

  • 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 — 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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