did you try pouring a little on the ground and igniting it?

Yes, I tried that once. I was a twelve year old kid looking through my uncles garage where I found a rusted thru can of Dupont black powder. My uncle said to put it in the trash but being a kid I thought burning it on the drive way might prove interesting. Nearly a pound of powder was poured out and matches thrown at it with no result. Then I got the bright idea of lighting it from a cigarette. When I pushed the burning ember into that pile of powder it lit off with a flash like a camera flash. After beating out my hair on fire and looking in a mirror I found a good 'sun burn' on my face and hand. With no eyebrows and crisped hair my father knew what happened but never said a work. Some lessons are best learned the hard way.