RST Engineering wrote:
I appreciate the information but note that:

a. I cannot send my students/readers down to Home Depot to pick up a pound
of copper chloride along with the muriatic (swimming pool grout etch) acid.

b. Now I've got a couple of gallons of etchant to keep around the lab in a
proper container for the next go-around.

BTW, what is the color of the CuCl2 and the HCl mixed together?

If you start off with HCl and H2O2, you get CuCl2. You don't need to
actually buy the stuff, it gradually becomes more concentrated with
use. Some form of chemical titration is needed with CuCl2 to ensure
that the concentration is correct and that it has the right pH.

Leon

On 1 Jun 2006 02:16:48 -0700, "Leon"
wrote:


RST Engineering wrote:
I appreciate the information but note that:

a. I cannot send my students/readers down to Home Depot to pick up a pound
of copper chloride along with the muriatic (swimming pool grout etch) acid.

b. Now I've got a couple of gallons of etchant to keep around the lab in a
proper container for the next go-around.

BTW, what is the color of the CuCl2 and the HCl mixed together?

If you start off with HCl and H2O2, you get CuCl2. You don't need to
actually buy the stuff, it gradually becomes more concentrated with
use. Some form of chemical titration is needed with CuCl2 to ensure
that the concentration is correct and that it has the right pH.


Maybe this will help if you want to try...

http://www.xertech.net/Tech/CuCl_ech.html

Excellent. I gotta get me a copy of that out of print book.

Jim




Maybe this will help if you want to try...

http://www.xertech.net/Tech/CuCl_ech.html