Homebrew PCBs

i must tell you i was not poisend from cupric chloride
i was working at a place that made pc boards for the
goverment and had to clean larg copper electrodes 
bur even with a resperator and all safty equipment
still got enough through my skin to get realy sick
i still am interested in the cuperic chloride use
but i would probley do it in a vented hood and use
gloves sorry if i mislead anyone but copper poisening
is very bad there was only one docter that knew
exactly how to treat it at the time.
 --- Adam Seychell
 <adam_seychell@...> wrote:
> 
> 
> rolanyang wrote:
> > Yea, from what I read, you just let the let the
> pump bubble/aerate
> > the solution for a while, and then it changes back
> to the
> > green color.... and it seems to work :)
> > 
> > If this were to become popular, it would put those
> Ferric Chloride
> > distributors out of business.
> > 
> > Someone on the list mentioned earlier that they
> were hospitalized
> > for copper poisoning. I am slightly concerned
> about the toxicity
> > of the stuff. From the MSDS, it doesn't sound very
> toxic, but
> > the fact that the guy was sick enough to be put in
> the hospital
> > concerns me..
> > 
> > ~Rolan 
> 
> 
> What he didn't mention was *HOW* he became
> intoxicated. I mean 
> was he drunk one day and his friends dared him to
> drink some 
> cupric chloride solution, or did he get a spec under
> his 
> fingernail and later got poisoned when he bit his
> fingernail.
> Yes, I agree there is reason to be concerned, but no
> more so than 
> any copper compound which includes *ALL* copper
> etchants use for 
> PCB making. For a good understanding on the
> biochemical aspects 
> of copper see;
> 
>
http://www.inchem.org/documents/jecfa/jecmono/v48aje06.htm
> 
> Fatal oral human dose is 200mg/kg bodyweight.
> 
> that translates to a 70kg person eating about 2
> TABLESPOONS 
> (55grams) of copper sulfate.
> 
> Dietary copper intake is 0.05mg/kg bodyweight.
> 
> 
> 
> 
> 


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