The strength of the influence on the morphology qualitatively corresponds to the order observed in the kinetics of the dissolution and nucleation experiments. Succinic acid does not have a powerful structure-modifying effect nor significantly influences dissolution or nucleation. Citric acid and tartaric acid both led to ultra-small calcium hydroxide crystals. For the C-S-H phases, we could observe notable differences between citric and tartaric acid. The TEM micrographs with tartaric acid revealed both amorphous C-S-H particles and large non-agglomerated sheets, while citrate caused a denser network of C-S-H sheets.