College pranks, Part 2.
Actually, we did this in high school, but what the hell...

There's this stuff called nitrogen tri-iodide. I'll leave it to you to find out on your own how to make it- but it's a very highly unstable compound, and when it explodes it turns everything in the immediate vicinity purple and will not wash off. And it takes almost nothing to make it explode.

We used to paint it on the undersides of the toilet seats in the girls' bathrooms. We could always spot our victims in gym class...
( The Resident Loon Not a demographic. Do not measure., Thu 13 Dec 2007, 16:59, 4 replies)

I love that stuff
And it's so easy to make, if a bit smelly!

I have the ingredients in the lab. Tomorrow could be fun...
( K2k6 has a proper job these days, Thu 13 Dec 2007, 18:20, closed)

If you do, be careful.
I don't know if you've messed with it before or not, but it's pretty touchy stuff. Please don't blow yourself up...
( The Resident Loon Not a demographic. Do not measure., Thu 13 Dec 2007, 18:33, closed)

yep
We used to fuck about with it at uni - till I heard a story about a cleaner who lost her fingers :(

Made some for my nipper and it nearly took my hand off, just put down a dish with some in and it detonated, leaving me with a purple hand, and lots of fragments of dish...it's not the only thing that's shock sensitive, I found.
(Countryslicker, Fri 14 Dec 2007, 11:15, closed)

Yep
I only make extremely small quantities. And if you use high purity ingredients it's not so sensitive.

I once dropped some in between blocks in a parquet floor, which was fun. It was popping away for days afterwards, when people walked over the floor.
( K2k6 has a proper job these days, Fri 14 Dec 2007, 14:41, closed)