Does anyone know how to make "cracker snaps" that are used in english poppers? Thanks

I am trying to make handmade English popper/crackers that make a "pop" when you pull them apart. I am having a hard time locating the part that makes the cracking sound. So I would like to try to make my own. One ingredient might be saltpetre. Thank you for any help you can give.

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TheresaC41 year ago

they have tons on ebay but no instructions on how to make them that i can find. i want to make some XL ones for my kids christmas gifts

From all my research (fairly minimal, I want to know specifics too!) both the little poppers you throw on the ground and Christmas crackers use silver fulminate instead of nitrogen tri-iodide because it's a little bit more stable and doesn't produce iodine vapor, which is A Bad Thing to inhale. As far as my research as shown, there are essentially two pieces of card-stock or similar, both with silver fulminate coated on them and one has an abrasive on top of that; they are sandwiched together, explosive sides facing each other on either side of the abrasive, which sets it off when pulled. I do not, however, know how to (easily and safely) make and coat the silver fulminate, nor do I know what kind of abrasive is used.
mrs.ham6 years ago
i THINK YOU ARE THINKING OF SOMETHING CALLED A CRACKER SNAP. YOU CAN FIND THEM ON THE INTERNET...HERE'S A LINK FOR THEM https://www.oldenglishcrackers.com/. YOU PLACE IN THEM IN HOMEMADE PARTY CRACKERS TO GET THAT "POP". YOU DON'T NEED ANY CHEMICALS, JUST CRACKER SNAPS!
lemonie7 years ago
You want "cracker snaps", see this page step 2 for sources. As they use some kind of explosive you'll probably find it harder to make them. Yes you could use nitrogentriiodide, but it'll cover things in iodine - not good.

L
ah....I thought she was talking about those little things you throw at the floor made from an Iodine salt. Funny. if it's "not good", I wonder why they sell them so freely, even to minors, without any warning re: iodine.
They're not iodine-based, some kind of azide perhaps?

L
I *think I was referring to ammonium triIodide, but whatever, it's academic, since I was mistaken as to the actual devices the author was talking about, and I've since looked thru your link and can see that whateever is used is nothing like the crystals that are interspersed with the majority filler material in the poppers I am familiar with (which are, from  a bit of surgery a ways back when I actually cared, a simple teardrop of paper wrapped to hold a tiny amount of filler and a few crystals, and which detonate upon impact, leaving a really small brownish stain on the ground where they impact.
My research says the rocks are coated with silver fulminate.

L

Ah...ok then.
Berkin7 years ago
I think it might be a very friction-sensitive flash powder.
seandogue7 years ago
As I recall, it's an unstable iodine salt, isn't it?