Monoazo solvent dyes
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Monoazo solvent dyes:-
A few mono azo dyes are used as solvent dyes and they do not contain any solubilising groups. One example of such series of dyes is the dye, Sudan Red R obtained by the diazotisation of cresidine (2-amino-1-methoxy-4-methyl benzene) and coupling with A-naphthol.
