[pure-silver] Re: Thiocarbamide Toner: now chemicals

My first experience with concentrated nitric was doing a Geology lab in college. I was using the acid to dissolve rock samples when I slopped some onto a couple of fingers. Thinking that I was about to see my appendages dissolve before my eyes - after all, I was dissolving ROCKS with the stuff! - I made a dive for the sink. About the time I reached the faucet, it dawned on me that I hadn't felt any discomfort yet, so I chanced a glimpse - probably my last - at my fingers and was amazed to find that they were still there! Somewhat yellow, but intact. I washed it off anyway, and learned the next day that I had not had a life- (or appendage-)threatening event (which was OK with me!)

-Bill


On Friday, June 24, 2005, at 03:05  PM, Koch, Gerald wrote:


I remember back in my chemistry days discovering the following day that
I had gotten conc nitric acid on my hand. There would be a yellow or
orange area of hardened skin, something like a callous. No discomfort
from the initial contact though. No lasting damage either. 

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