I have scoured the internet for possible ways to calculate this and cant seem to find out. I am trying to establish a chart for the water suitabilities of alum at a given temperature. I am trying to grow crystals as a new hobby and I'd love to learn more about the chemistry involved. If there is any formula or way to calculate the solubility of Aluminum Potassium Sulfate Dodecahydrate in distilled water at a given temperature. Mainly, I want to establish temperature ranging solubilities of Alum.