I used a 1 nitric to 4 distilled water mix on two batches of gold-filled at about 60F.
Side Note: I did this in two beakers that were inside a 5 gallon bucket outside. I left the lid on, but not sealed. On of my solutions turned orangish brown and the other was blue. I poured off the brown solution (saved), rinsed with distilled water, then started that one again and ended up with blue solution. When opened to check the first time, I had LOTS of orange/red NOx that was released from the bucket.
Now in both, I have a VERY dark blue solution. Is this normal? I don't seem to be dropping any silver out of solution with clean copper after pouring some off and diluting 50% with distilled water.
I understand that "cold nitric" and "hot nitric" act differently, but I don't know exactly how.
Any thoughts, comments, information, advice, or criticism is appreciated.
Thanks,
MarvinM
Side Note: I did this in two beakers that were inside a 5 gallon bucket outside. I left the lid on, but not sealed. On of my solutions turned orangish brown and the other was blue. I poured off the brown solution (saved), rinsed with distilled water, then started that one again and ended up with blue solution. When opened to check the first time, I had LOTS of orange/red NOx that was released from the bucket.
Now in both, I have a VERY dark blue solution. Is this normal? I don't seem to be dropping any silver out of solution with clean copper after pouring some off and diluting 50% with distilled water.
I understand that "cold nitric" and "hot nitric" act differently, but I don't know exactly how.
Any thoughts, comments, information, advice, or criticism is appreciated.
Thanks,
MarvinM