Abstract: Dye, especially for human hair that consists of the new chemical compounds of the general formula ##STR1## in which Z is selected in the group consisting of hydroxyalkyl, alkoxyalkyl, acylaminoalkyl, carbalkoxyaminoalkyl, mesylaminoalkyl, ureidoalkyl, aminoalkyl, monoalkylaminoalkyl, dialkylaminoalkyl radicals, and the salts of the corresponding acids. Among the preferred acid salts are the sulfates, hydrochlorides, phosphates and tartrates.This dye is particularly suited for use with metadiphenols, metaphenylenediamines, metaaminophenols as well as the couplers of the formula ##STR2## in which R.sub.3 and R.sub.4 are identical or different and may represent hydrogen, alkoxy, or alkyl and in which R.sub.5 is selected from the group consisting of acyl, carbalkoxy and ureido.

Abstract: Dye compositions, especially for human hair containing the new chemical compounds of the general formula ##STR1## in which formula the radical Z is selected in the group formed by the hydroxyalkyl, alkoxyalkyl, acylaminoalkyl, carbalkoxyaminoalkyl, mesylaminoalkyl, ureidoalkyl, aminoalkyl, monoalkylaminoalkyl, dialkyl-aminoalkyl radicals, and the salts of the corresponding acids. Among the preferred acid salts, the sulfates, hydrochlorides, phosphates and tartrates may be mentioned.This dye is particularly suited for use with a coupler of the formula ##STR2## in which formula R.sub.3 and R.sub.4 are identical or different and may represent a hydrogen atom, alkoxy radical, or an alkyl radical and in which R.sub.5 is a radical selected in the group formed by the acyl, carbalkoxy and ureido radicals.