acid azo dye

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• azo dye — Chem. any of a large class of dyes containing one or more azo groups. [1880 85] * * * Any of a large class of synthetic organic compounds, dyes containing two nitrogen atoms joined by a double bond (see bonding, covalent bond) in the form ―N=N―… …   Universalium

• azo rubine — ˌazōˈrüˌbēn, ˌāz , bə̇n noun Usage: usually capitalized A&R Etymology: az + Latin rubeus red + English ine more at ruby : a mordant acid azo dye that dyes wool bluish red called also carmoisin; see dye …   Useful english dictionary

• Acid dye — is a member of a class of dye that is applied from an acidic solution. In the home or art studio, the acid used in the dyebath is often vinegar (acetic acid) or citric acid. The uptake rate of the dye is controlled with the use of sodium chloride …   Wikipedia

• dye — dyable, dyeable, adj. dyer, n. /duy/, n., v., dyed, dyeing. n. 1. a coloring material or matter. 2. a liquid containing coloring matter, for imparting a particular hue to cloth, paper, etc. 3. color or hue, esp. as produced by dyeing. 4. of the… …   Universalium

• Dye — For other uses, see Dye (disambiguation). Yarn drying after being dyed in the early American tradition, at Conner Prairie living history museum. A dye is a colored substance that has an affinity to the substrate to which it …   Wikipedia

• Azo compound — General chemical formula of azo compounds Azo compounds are compounds bearing the functional group R N=N R , in which R and R can be either aryl or alkyl. IUPAC defines azo compounds as: Derivatives of diazene (diimide), HN=NH, wherein both… …   Wikipedia

• dye — A stain or coloring matter; a compound consisting of chromophore and auxochrome groups attached to one or more benzene rings, its color being due to the chromophore and its dyeing affinities to the auxochrome. Dyes are used for intravital… …   Medical dictionary

• Azo coupling — An azo coupling is an organic reaction between a diazonium compound and a dialkylaniline (C6H5NR2), phenol or other aromatic compound which produces an azo compound.[1][2] In this reaction the diazonium salt is an electrophile and the activated… …   Wikipedia

• azo yellow — noun : an acid dye see dye table I (under Acid Yellow 63) …   Useful english dictionary

• acid dye — Chem. any of a class of dyes containing one or more acidic groups, as the sulfo group: used in acid solution chiefly for dyeing wool and silk. [1885 90] * * * ▪ chemical compound       any bright coloured synthetic organic compound whose molecule …   Universalium

• Amaranth (dye) — Chembox new ImageFile=Amaranth new.png ImageSize=200px IUPACName=trisodium (4E) 3 oxo 4 [(4 sulfonato 1 naphthyl)hydrazono] naphthalene 2,7 disulfonate OtherNames=FD C Red No. 2, E123, C.I. Food Red 9, Acid Red 27, Azorubin S, C.I. 16185 Section1 …   Wikipedia