i was disolving some copper metal in nitric acid 65% and NO2 gas got in contact with my skin, now i have yellow-redish stains on my fingers.
how much does it take for them to go away.??
[Edited on 19-5-2011 by Megamarko94]ScienceSquirrel - 19-5-2011 at 08:27
The yellow stains are due to the nitration of phenylalanine in the skin.
They will fade as your skin flakes and wears away.
Washing and a little judicious use of a dead skin remover will make them fade quicker.
[Edited on 19-5-2011 by ScienceSquirrel]The WiZard is In - 19-5-2011 at 08:30
i was disolving some copper metal in nitric acid 65% and NO2 gas got in contact with my skin, now i have yellow-redish stains on my fingers.
how much does it take for them to go away.??
Out-out damned spot!
Yup makes you look like a two pack a day smoker. Its been
a long-long time since last time... new skin has to replace your
old stained skin, my WAG would be a — week or two. Unless
you did a really good (bad) job - then the skin will sloth off.
This is a variation of the classic HS chem/bio nitric acid on
(hard cooked) egg white as a test for protein.
You could use K permanganate to stain your other fingers and
see how long that lasts and use the time as a guide.hissingnoise - 19-5-2011 at 12:18
Some of us wore our finger nitro-skin with pride (Ye olde days). . .
And it disappears all too soon!
Nicotine stains are a less appealing brown colour!
