Sciencemadness Discussion Board

Extracting Ammonium Nitrate from Instant Cold Packs

coyote - 6-7-2022 at 23:45

I created a procedure for extracting ammonium nitrate from instant cold packs, I found and old used instant cold pack in my first-aid kit, and decided to extract the AN from it.

https://imgur.com/a/zMYlt0b

I started by cutting open the instant cold pack and transferring the wet ammonium nitrate into a beaker. I added cold water to the beaker until all the AN was dissolved. (Its important to use cold water because some instant cold packs have calcium ammonium nitrate which is not very soluble in cold water, but AN is very soluble in pretty much all temps of water) Once it was all dissolved I filtered it, then added the liquid to a beaker on a hot plate. I heated it until it reached 170C, and then poured it out onto a sheet of aluminum foil. Once the AN solidified I cracked it into small pieces and crushed it up with a mortar and pestle.

The yield I got was pretty terrible in this, mostly because I did a lot of experimenting with it, anyone have anything to add that could improve this method?

hissingnoise - 7-7-2022 at 09:49

Quote: Originally posted by coyote  

The yield I got was pretty terrible in this, mostly because I did a lot of experimenting with it, anyone have anything to add that could improve this method?


C.A.N. fertiliser might just improve everything?

https://www.yara.co.uk/crop-nutrition/fertiliser/nitrate/yar...


RogueRose - 8-7-2022 at 08:46

save yourself some time & go to a sporting good store that has "reactive targets" and buy yourself a few. It is pure and you get a little bonus of some very fine German Dark aluminum powder!

Tannerite

MadHatter - 9-7-2022 at 12:46

From wikipedia:

The product, developed by Daniel Jeremy Tanner, and initially formulated in
1996,[3] consists of two components: a fuel mixed with a catalyst or sensitizer,
and a bulk material or oxidizer. The fuel/catalyst mixture is 90% 600-mesh dark
flake aluminium powder, combined with the catalyst that is a mixture of 5% 325-
mesh titanium sponge and 5% 200-mesh zirconium hydride[1] (with another
patent document[9] listing 5% zirconium hydroxide). The oxidizer is a mixture of
85% 200-mesh ammonium nitrate and 15% ammonium perchlorate.[1] The
patents on these formulations were applied for on August 20, 2001.

This is the most common reactive target mix. It's an extremely loud explosion
when struck by a projectile moving >= 2000 fps.

It's a modified ammonal(ammonium nitrate/aluminum). Getting the perchlorate
out shouldn't be too much of problem. The nitrate is more than 10 times as
soluble at freezing. I consider the perchlorate a bonus.

SaccharinSlayer157 - 22-7-2022 at 19:53

If you're ever anywhere that has Krogers around their generic version instant cold packs have pure AN pellets inside, nothing else!