Golden flash?

[vulture]

I made some KMnO4/Al/S flash (yes i know it's unstable and dangerous, thank you!) and added isopropyl alcohol twice to prevent dust formation.

All the alcohol has evaporated now and i'm looking at little gold colored and shining chunks of flash.
It really looks like gold! :)

Could this be aluminium(poly?)sulfide?
It still performs very good.

[NoltaiR]

Well somehow I doubt that just isopryl alcohol made aluminum sulfide out of aluminum and sulfur without a lot of heat needing to be added. But this would be the first time I have ever heard of flash in chunks! (on purpose anyways.. most people usually sift it through a screen to make it into granules).

But all the same it sounds interesting.. I may have to make a batch myself to experiment with. ;)

[vulture]

The explanation is very simple:
Isopropyl gets oxidized to acetone and the KMnO4 to MnO2. The brown MnO2 layer that forms over the silver Al makes this stuf look like gold or FeS in certain light conditions.

This thread can be closed as it's useless now.