Good Morning Orchid-Land!
I have read & researched the blogs, and cannot find the exact answer
I am looking for, so I thought I would just stop wasting my time and
I need to do some silver etching with Nitric acid. I have found a
few sites online to make the purchase, (the shipping is a tremendous
amount of the cost due to its hazardous nature), but what I have not
figured out is what concentration I need for my etching purposes. I
can buy the concentrate, which is 69-71%, for a relatively reasonable
price. The amount I need is probably about 500cc. My concern is not
storage, I have a cabinet, (vented) in the garage that I can lock,
and I can etch under a hood, wear my chem-mask, gloves, etc. to make
it safer. I have used Nitric before when in school, and understand
the safe usage, hazards, warnings, etc. (I take safety very
My biggest concern is that I don’t know whether to dilute it, or just
go ahead and use it at the strength it comes in. At University we
always got our acids from the chemical storage at our college, and it
was what they called “spent”, meaning used, and I would assume less
concentrated. Will a 70% solution be too high? If I order 500cc and
dilute it will I have a TON of the stuff left over to store forever?
I would like to keep it on hand, but I don’t need enough to devour
the world either, lol. I am pretty certain that there are jewelers
out here who do silver and gold etchings, so I am asking for some
educated advice. Any help here would be greatly appreciated before I
place my order. THANKS!