Studies on nucleation phenomena occurring in aqueous solutions supersaturated with calcium sulfate. III. The cation:anion ratio

Nucleation rates from solutions of calcium sulfate dihydrate were measured at constant supersaturation but at varying cation:anion ratios. Induction times were also measured. The values of each were found to be dependent on the Ca:SO4 ratio. The results of empirical modeling studies are reported. These suggest that ion pair formation has an impact on the nucleation event beyond that of ion removal.