guenron said:Hi!
I've managed to lose this post twice, so I'll make it short.
1. Is "Alum" short for "Aluminum"??? No.
2. Does it contain trace amounts of aluminum in it? No, there is no elemental AL in alum.
Let's make it painless. Alum, a compound used by the ancients, is a hydrated crystal (contains lottsa water molecules (24 if recall) in its lattice). It also contains two "metals," one an "alkali," and the other a trivalent metal form both as sulfates. Neither of these are elemental, and as a matter of fact the alkali metal is sometimes ammoniacal sulfate. If memory serves again, the trivalent metallic is found as aluminum, chromium, iron, et al.
The styptic stick many use is typically made by dehydrating the crystal (heating to force off the lottsa water molecules) and using a binder to shape and form the resulting powder.