Potash alum is another name for potassium alum. Alum is a class of molecular compounds, and included in the class is potassium alum. So, they are not the same thing, but yet very similar in that potash alum is a member of the alum class.

If you think to the crystalline structure this is cubic.

The address of the Alum Creek is: Fuquay Creek, Alum Creek, 25003 0530

non ferric alum is the purer form of alum as compared to Ferric alum. Non ferric alum is used in pulp and paper industry while ferric alum is used in water treatment plants.

yes alum is deliquescent