methyl orange

methyl orange
A weakly acid dye used as a pH indicator (red at 3.2, yellow at 4.4). SYN: helianthine.

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methyl orange n a basic azo dye C14H14N3NaO3S that is used chiefly as an acid-base indicator and whose dilute solution is yellow when neutral and pink when acid

Medical dictionary. 2011.

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  • Methyl orange — Methyl orange …   Wikipedia

  • Methyl orange — 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,… …   The Collaborative International Dictionary of English

  • Méthyl orange — Hélianthine Pour les articles homonymes, voir MO. Hélianthine[1],[2 …   Wikipédia en Français

  • methyl orange — Helianthin He li*an thin, n. [Prob. fr. L. helianthes, or NL. helianthus, sunflower, in allusion to its color.] (Chem.) An artificial, orange dyestuff, analogous to tropaolin, and like it used as an indicator in alkalimetry; called also {methyl… …   The Collaborative International Dictionary of English

  • methyl orange — metiloranžinis statusas T sritis chemija apibrėžtis Indikatorius. formulė (CH₃)₂NC₆H₄N=NC₆H₄SO₃Na atitikmenys: angl. helianthin; methyl orange rus. гелиантин; метиловый оранжевый ryšiai: sinonimas – heliantinas sinonimas – natrio 4 [4… …   Chemijos terminų aiškinamasis žodynas

  • methyl orange — noun an azo dye used as an acid base indicator; used for titrations involving weak bases • Hypernyms: ↑azo dye, ↑acid base indicator * * * noun Usage: sometimes capitalized M&O : a basic azo dye (CH3)2NC6H4N . NC6H4SO3Na which is made by coupling …   Useful english dictionary

  • methyl orange — Chem. an orange yellow, slightly water soluble powder, C14H14N3NaO3S, used chiefly as an acid base indicator. Also called gold orange, helianthine B, orange III, tropaeolin D, tropeolin D. Cf. methyl red. [1880 85] * * * …   Universalium

  • methyl orange — meth′yl or′ange n. chem. an orange yellow, slightly water soluble powder, C14H14N3NaO3used chiefly as an acid base indicator • Etymology: 1880–85 …   From formal English to slang

  • methyl orange — noun Date: 1881 an alkaline dye used as a chemical indicator …   New Collegiate Dictionary

  • methyl orange — noun An azo dye used as an acid base indicator for titrations involving a weak base …   Wiktionary

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