Abstract: 1,5-dihydroxy-4,8-diaminoanthraquinone compounds of the formula I ##STR1## wherein Y represents a linear or branched alkyl group of 1 to 5 carbon atoms,R represents a hydrogen atom, an unsubstituted or substituted alkyl group of 1 to 5 carbon atoms or the cyclohexyl group, andEach of R.sub.1 and R.sub.2 independently represents a hydrogen atom, the methyl, ethyl or iso-propyl group.

Abstract: Fibre-reactive anthraquinone dyestuffs are disclosed which are of the formula ##STR1## wherein X and Y represent independently of each other hydrogen or SO.sub.3.sup.- M.sup.+,Z represents a fibre-reactive radical bound to -NH- directly or via a bridging member selected from carbonyl, sulphonyl or carbonylimino; and forming with the substrate especially polyamide or cellulose at least one covalent bond, andM.sup.+ represents one equivalent of a colorless cation.These dyestuffs are useful for the pad-dyeing and printing of organic materials, especially materials made from polyamide or cellulose.The resulting dyeings are distinguished by excellent fastness to wet processing such as, in particular to washing, water, perspiration, alkali and rubbing, as well as by a good fastness to light.