What can I do with hydrochloric acid?

I have about two gallons of 12 M Hydrochloric acid. What can I do with it? And I don't want to dissolve metal or put magnesium strips in it or dump baking soda in it. I'm looking for something creative, something interesting that I can do with it.

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NurdRage8 years ago
etch copper start fires make nitric acid make sulfuric acid create transition metal complexes test fertilizer for nitrates make iodine make heat... lots of it make hydrogen gas make chlorine gas (pretty dangerous actually...) and those are just off the top of my head, there are definetly more things than just dissolve random metal. check my instructables for a couple of those things.
I totally already answered that! ...by proxy...
lemonie8 years ago
Crikey! I didn't think 12M was possible as that's >43%. Nasty stuff anyway, I'll ask someone. L
in my local tractor supply co they sell 45% hcl at $10 a gallon
12M is pretty potent! I'd love to get my hands on some...metaphorically speaking. HCL is expensive everywhere I've looked (ex unitednuclear is like 50 bucks for a 500 ml)
That's a rip-off, you can get 2.5L of 37% for about 20 pounds, e.g.:
(I don't think 12M is possible in water)

frollard8 years ago
I think there is a way to etch pcb's with it... nurdrage has some cool ibles/youtube vids that lots of them require hcl.