Sciencemadness Discussion Board

Aluminum powder from firecrackers?

v4nt3d - 30-1-2016 at 15:01

Hi everyone! I know that firecrackers use flash powder which contains Al/KClO4 and sometimes Sulfur. So, my question is - can you actually separate the aluminum from the other stuff?
P.S. I tried mixing this powder with water, but it turned to a weird solution with some slag floating on the top.

The_Davster - 30-1-2016 at 15:07

That slag would have been your aluminum....assuming enough water was added to dissolve the perchlorate.

Herr Haber - 31-1-2016 at 01:24

Also consider that some compositions especially those with sulfur use KNO3 instead of KClO4. And sulfur of course is insoluble in water...

hissingnoise - 31-1-2016 at 01:32

Quote:
So, my question is - can you actually separate the aluminum from the other stuff?

And my question is ─ why would you?

I mean, aluminium powder is cheap and readily available . . . ?


vmelkon - 31-1-2016 at 04:41

Dissolve in water to get rid of the KClO4.
Then dissolve in toluene to dissolve the sulfur.