Patent ID: 7943657

Claim:
A bleach or a disinfectant composition comprising an imido-alkanpercarboxylic acid represented by formula (I): wherein A is wherein: R1 is hydrogen, chlorine, bromine, C 1 -C 20 alkyl, C 2 -C 20 alkenyl, aryl, or alkylaryl, R2 is hydrogen, chlorine, bromine —SO 3 M, —CO 2 M, —CO 3 M or —OSO 3 M, M is hydrogen, an ammonium alkaline metal, or an alkaline-earth metal equivalent, and X is C 1 -C, 19 alkylene or an arylene; wherein said imido-alkanpercarboxylic acid is in a beta crystalline form having an average size of lower than 30 microns.