Sunflower stalks for charcoal?

[DavidF]

From Chemistry of powder and explosives by Tenney L. Davis:

 

"Cocoa powder was more sensitive to friction than ordinary black powder. Samples were reported to have inflamed from shaking in a canvas bag."

 

The powder was made using a partially burned brown charcoal that started out as rye straw. Cocoa powders had low or no sulfur content.

 

I hope this helps.

[Arthur]

Several useful books are actually available as free downloadable PDFs, COPAE is for certain. Type it in a search engine of choice and click to download

[cmjlab]

From Chemistry of powder and explosives by Tenney L. Davis:

 

"Cocoa powder was more sensitive to friction than ordinary black powder. Samples were reported to have inflamed from shaking in a canvas bag."

 

The powder was made using a partially burned brown charcoal that started out as rye straw. Cocoa powders had low or no sulfur content.

 

I hope this helps.

Thanks, I knew I read about it somewhere!