any liquid mixture having constant minimum and maximum boiling points and distilling off without decomposition and in a fixed ratio, as isopropyl alcohol and water.
a mixture of liquids that boils at a constant temperature, at a given pressure, without change of composition

azeotrope a·ze·o·trope (ə-zē’ə-trōp’, ā’zē-)
A liquid mixture of two or more substances that retains the same composition in the vapor state as in the liquid state when distilled or partially evaporated under a certain pressure.
a’ze·o·trop’ic (a’zē-ə-trŏp’ĭk, -trō’pĭk) adj.


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  • Azobenzene

    an orange-red, crystalline, water-insoluble powder, C 12 H 10 N 2 , obtained from nitrobenzene by reduction: used chiefly in the manufacture of dyes and as an insecticide. Historical Examples The parent substance is “azobenzene,” and these three colouring-matters are mono-, di- and triamido-azobenzene respectively. Coal Raphael Meldola noun a yellow or orange crystalline solid […]

  • Azo dye

    any of a large class of dyes containing one or more azo groups. noun any of a class of artificial dyes that contain the azo group. They are usually red, brown, or yellow and are obtained from aromatic amines

  • Azo radical

    azo group. the bivalent group −N=N− united to two aromatic groups, as in azobenzene.

  • Azo group

    the bivalent group −N=N− united to two aromatic groups, as in azobenzene.

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