and the particle fineness of the binder. Several authors showed that the CA phase is much more reactive than CA 2 and determines the early hydration behavior of CACs . Consequently, if the CA amount increases, more HCl is needed to achieve a defined dissolution inhibition time. However, we buffering effect of H 3 PO 4 (including the formation of an insoluble calcium phosphate phase), the kosmotropic effect of the anions, adsorption of the anions on the surface of CAC, and the impact of the effective surface area of CA. These parameters and their effect are compiled in Table .