[xzavour]

some friends and i have been trying to come up with a new type of paint grenade to dominate all other paint grenades. but we hit a snag we need to find a chemical reaction that isn't consedered a pyrotechnic and does not create a combustibal, toxic, or acidic substance... it needs to fill a core to the point of bursting and needs to have about a 3 second delay or a simple way to make it have a delay...if any such thing exsists i would love to know what it is so as to help my friends finish our "toy"

and thanks ahead for any *delete me*

[Arkcon]

See, here's the problem -- anything that expands really quickly from a small amount and is sealed in a burst-able container is an explosive.  It might not be a registered pyrotechnic, but the hazard is still there.  Search these boards, people are always looking for insight, and we're limited in what we can say, for legal reasons.  I came up with a simple, non-pyrotechnic "bang" and it got erased by a Mod:

[Borek]

http://www.chemicalforums.com/index.php?topic=6090.0

[xzavour]

yeah my friends and i tryied the bakeing soda vin. trick by making the core like a hour glass with a pull string to unblock the hole so that they could react but after a few blew up in my face we discovered that it was to fast of a reaction. I've talked to my chemistry teacher and my physics and earth science teacher about this and they agreed but couldn't think of a way of replaceing the reactions with something else or how to slow it down. so i know the baking soda/vin. trick won't work i've had about 5 blow up on me from trying different ways to slow the reaction down. i'm hoping for something like the works/alum. foil trick but that doesn't create a toxic, cumbustible, or dangerously acidic product, but the speed of this reaction is great but again to dangerous. the simplest way is fire crackers but the SPPL(the paintball league i play in) does not alow pyrotechnics or open flames. and obviously the water balloon trick is no good either.... but thanks for the help and i hope that someone will be able to figure this out.