abstract |
A compound of the formula (I) n ALK—SO 2 —O—O—SO 2 OX,n wherein ALK is a branched or unbranched alkyl group, especially a methyl, ethyl, propyl, butyl, isopropyl, isobutyl group, or a higher alkyl group, and X=hydrogen, zinc, Aluminium, an alkali or alkaline earth metal. |