alongside Al(OH) 3 . In these diluted conditions, no formation of AFm phases containing the acid anions is expected for proton concentration of 82 µmol/g CAC and up to 200 µmol/g CAC . Consequently, the differences among the strong acids point towards an anion-specific effect on the inhibition period before the onset of CA dissolution. The sequence of inhibition power is H 2 SO 4 > HCl > HNO 3 > HClO 4 . It is striking that the sequence of anions corresponds to the Hofmeister series, which ranks ions in order of their relative influence on the physical behavior of a wide variety of aqueous processes :