sodium pyrosulfite/Bonide stump out

Well today I went to the home depot planning on picking up some grants stump remover, they were all out and the only other similar item was bonide stump out, it didn't have an ingredient list, and really wasn't comfortable asking the sales guy if this stump remover had explosives in it. (Especially since im 15.) so i bought it came home and did some research. So this crap has no potassium nitrate, but i found its 98% sodium pyrosulfite, now the name has the word PYRO in it so I'm hoping someone out their knows something I can do with it, right now all i have figured out is when it comes in contact with water it makes sodium dioxide, which is really smelly gas, so I have an idea for an impact stink bomb, any other ideas.

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Its used for precipitating Gold out of solution.
photis225 years ago
I suggest creating an apparatus for bubbling the SO2 through water to produce sulfuric acid, get some KNO3 and put that with the sulfuric acid and boil it- if you distill the gas that comes off you'll have some nice nitric acid you can use for nitrocellulose shells or nitroglycerin. this is purely speculation though, I have no idea how pure the sulfuric acid you produce with SO2 will be.
TXWolfie6 years ago
Ok does anyone read the ingredients for the Bomide stump out its Sodium Metabisulfite, it wont blow up or can you use it for anything Pyro related. Its a chemical that when added to water turns out a very deadly gas. So read before you decide to experiment.
I too got a lb of Bonide. Oh well, I do happen to have three stumps in the back yard. FYI, if anyone is still looking for potassium nitrate, you can get it from ebay, 1lb for $9 or 3 lbs for $15 and free shipping(!).
emesis6 years ago
It does say on the label "contains no explosives". But nothing else though. That's why I had to look it up and ended up here.
I've found that Kno3 will be listed on the label if the product contains it.
It doesn't seem like anyone actually wants to remove any stumps. If it weren't for smoke bombs would they sell any stump remover?
ToddisI7 years ago
LOL, Same here, I was wondering why when i put a map gas torch to it it wouldn't burn pink. Let alone burn at all!
me too dammit. i just made some gunpowder with the stuff and it does not work. it really pisses me off to spend 6$ on something that does not do what i need it for. besides they were all out of green light.
kelseymh9 years ago
The chemical prefix "pyro-" doesn't really have anything to do with fire. It is a holdover from an older, and now obsolete, system of chemical nomenclature. For acidic radicals with multiple oxidation states, the "pyro-" prefix indicates an intermediate state, between "ortho-" (most hydrated) and "meta-" (least hydrated).

For the chemical above, the S2O7 is intermediate, between SO2 and SO4.

As many other people have noted, when Na2S2O7 is hydrated, it evolves SO2 gas which is highly toxic. Most assuredly not a good choice for a stink bomb, or anything else for that matter.
Well now! Hearing this, bubbling the gas through water should do nicely to generate some high quality sulfuric acid! I smell an instructible in the making! (No pun intended). Maybe homemade car batteries... Or a precursor to other highly useful things...
Hear a certain someone scream in anguish...
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