Sorry I'm late responding. I think those ratios sound OK (though I'd probably use less H2O2, maybe 2H2O, 1H2O2, 2HCl,) but I would do water first, then H2O2, then HCl. The HCl dissolving in sater will evolve a lot of heat; the mixture of H2O and H2O2 will absorb the heat as it is generated.
NEVER add water to acid. A small amount of water added to a strong acid (and every mixture begins with a small amount of the added material) will get very hot very quickly, will boil, and then splash undiluted acid back at you. Bad bongos!! (Do as you oughta, add adic to water!)
HTH,
Donald.
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----- "Slavko Kocjancic" <
eslavko@...> wrote:
> msilv3r pravi:
> > Hi. I'm new to this. I recently got some H202 and HCL from a
> chemical company. The H2O2 is 35%. I'm not sure what percentage the
> HCL is, however it's labeled "Hydrochloric Acid, 8, PG II." I don't
> know what ratio to use. Should I dilute the H202 with water? I'm
> worried about the combination turning into boiling water. Also, are
> lined latex gloves, the kind you use for kitchen cleaning, sufficient
> gloves? Does it matter which you pour in first? I plan on doing this
> outside. I have a plastic container for both the etching and the
> remaining enchant.
> >
> > Thanks.
> > -Mike
> >
> Just use 1:1:1 ratio and should be ok.
> If HCl is diluted just little longer etching time will be.
>
> Pour watter into bowl after that HCl and last H2O2. You need little
> amount of liquid just to cover board. Do not preheat anithing and do
> all
> the thing outside.
>
>
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