We note that a recent study by An and collaborators has also provided SMILES and values from the iBonD database, including atom indices of dissociation sites, while applying specific curation steps such as removing compounds with significant pK a variance between sources and averaging datapoints where the variance was smaller. Our approach is similar, but DISSOLVE2-ANIONS includes both neutral and anionic SMILES structures, and implements an extensive data cleaning process for entries with high variance. Both datasets are suitable for pK a prediction, though we recommend using our curated set for the nine solvents described herein due to its more rigorous cleaning.