Hey, thanks for all the comments!
Lots of interesting stuff, but I'll just post the trimmed-down
version
>yes, and the result is possible injury or death if you have enough
>etchant.
>
>You have a WAY too strong mixture!!
Could you perhaps be a bit more specific regarding the possible
injury and death? Those risks are a typical part of my daily life and
it's the specific details that allow me to take appropriate precautions.
Are there other potential results beyond boilover and a corrosive mess?
Like say, explosive disassociation of the hydrogen, chlorine, and oxygen
with subsequent ignition of same (ultra-bad news)?
It was a total of 225 ml, 1/3 ~37% HCl, 2/3 "40 volume" (12%?)
peroxide. When fresh and cool, it ∗was∗ extremely effective, but not
something I'd recommend to the inexperienced. Please see below.
>If you are going to use the 1/3 acid 2/3 peroxide use the 3% medicinal
>grade peroxide you get at the drug store. The hcl is common pool acid
>sold everywhere it is about 33-37% hcl. I add 2/3 cup of peroxide to a
>plastic container dry the cup, add 1/3 cup acid. This is best done
>outdoors as some fumes may be given off as the acid is added. After
>all the acid is added the fuming if any will stop and it may be moved
>indoors. (carefully, it is quite acidic)
Thank You. Is that simple note in the files section?
All newbies please follow the simple procedure above. Be really
careful with the acid, buy and wear goggles and gloves, and keep a gallon
jug of distilled water (with the seals opened) near enough to grab with
your eyes closed. Store the acid secured against access by children and
idiots and preferably away from anything of value (HCl makes nasty fumes,
sometimes even through a closed container). Add baking soda in very small
amounts until the etchant no longer bubbles before sending down the
drain. Do not attempt to replicate my own activities without serious
industrial safety training and equipment, and remember that it's
sometimes better to be lucky than good.
Oh, and aside from the safety recommendations, don't take me or my
posts seriously enough to warrant flaming. For me, much of the time the
process itself is the project.
Thanks again,
-Gary