Debonding of succinic and tartaric anions from mechanocomposites of these acids with talc and kaolinite and their transition into solution are investigated. It is found that under the experimental conditions, the talc-based composites get dissolved almost completely within 1 min. The dissolution of the composites of succinic acid and kaolinite occurs gradually within similar to20 min; the rate of dissolution is depending on activation time. The time necessary for dissolution of mechanocomposites of tartaric acid both with talc and with kaolinite is 1 min. Probable reasons of differences in the solubility of the composites are discussed. (C) 2004 Kluwer Academic Publishers.