Amino-derivative (poly)peroxycarboxylic acid monopersulfates having the formula: ##STR1## wherein the symbols have the following meanings: R, R.sub.1 and R.sub.2, which may be alike or different from one another, represent hydrogen atoms, alkyl groups which may be optionally substituted with the proviso that at least one of them is a hydrogen atom; n is an integer different from 0; said --(CH.sub.2).sub.n -- group may be also interrupted by CONR.sub.3 groups; and wherein R.sub.3 represents a hydrogen atom or an alkyl or aryl group. A process for their preparation and their use as bleaching agents are also disclosed.