> HNO 3 > H 2 SO 4 > HCl, significantly differs from the sequence in section 3.2. Only the position of phosphoric acid is unchanged, i.e., it shows both the largest retardation in the isothermal calorimetry experiment and the longest dissolution inhibition. Perchloric acid, which showed the lowest impact on initial CA-dissolution, has the strongest retardation power among the strong acids on the main CA reaction (see Figure ). The anions (ClO - 4 , NO - 3 , SO 2- 4 , and Cl -) must be responsible for the observed differences of the retardation time, as the proton amount and all other factors were kept constant or identical.