Most any hardware store should carry it. Big box stores need to deal in large volumes to keep the margins up -- try a local hardware.
I'm not sure what you want the NaOH for. You can use that to neutralise FeCl when you want to dispose of it, but for CuCl, all you need is H2O2 (hydrogen peroxide) from the druggist (3%) or beauty supply (12%) is better.
HTH,
Donald.
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----- "Frank P" <
qz9090@...> wrote:
> Mark,
> I checked at my local HomeDepot and, although they had muriatic acid
> for swimming pools, it came in a large, two-pack container. Have you
> found it in smaller quantities at other hardware store? If so, where
> and how small?
>
> Also, where do you get your NaOH?
>
> I have been vacillating between using FeCl and CuCl but I have
> concerned about storage and disposal for both. I am also trying to
> keep my quantities on hand small, so I am not storing a lot of
> potentially harmful liquids around my home.
>
> Thanks.
>
>
>
> --- In Homebrew_PCBs@yahoogroups.com, Mark Lerman <mlerman@...>
> wrote:
> >
> >
> > Whoops - I mean no bubbler or heater used - there is heat and
> > bubbling produced by the etching process.
> >
> >
> > At 10:06 AM 6/10/2010, you wrote:
> > >I don't make a lot of boards, and most of them are quite small, so
> > >I've been looking for a simple, fast way to etch. After
> experimenting
> > >with a few suggested recipes, I use a 1:1 ratio of muriatic acid
> > >(31.45%) to 12% hydrogen peroxide. The muriatic acid is available
> in
> > >any hardware store, the peroxide is easily obtained from a beauty
> > >supply store as "40 volume developer" - get the clear, not the
> creme.
> > >They are both very inexpensive, and the etching takes 1-2 minutes
> > >with a little hand agitation, no bubbling, no heat. DO THIS
> OUTDOORS
> > >or with a chemical hood. Then use NaOH to neutralize.
> > >
> > >For an etching container I use a polypropylene storage bin - they
> > >sell them is many sizes and they are very inexpensive.
> > >
> > >Mark
> > >
> > >
> > >
> > >------------------------------------
> > >
> > >Be sure to visit the group home and check for new Links, Files, and
> Photos:
> > >http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> > >
> > >
> > >
> >
>
>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links, Files, and
> Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>