This dataset contains the mid IR spectrum and XRD pattern of synthesized pyromorphite and the Pb, P, Cl, pH and EC measurements for the solubility batch reactions. This dataset is associated with the following publication: Chevis, D., Y. Wan, and K. Scheckel. An integrated experimental and modeling approach to understand pyromorphite solubility. CHEMOSPHERE. Elsevier Science Ltd, New York, NY, USA, 388: 144694, (2025).