*** How to remove AgNO3 on hands ?
Toto Coutougno
Someone knows how to remove AgNO3 on hands.
Thanks for my hands !!!!!!!!!
Chris Clayton
I'm pretty sure that's the compound my mother said her college lab
instructor used to determine the care they took in the lab. They'd do something
with it, and then show their hands at the end of the period and whoever's hands
were blackened was not careful enough. It worked because it _couldn't_ be
washed off!
I'm sure it'll go away after awhile. :)
Chris
--
Chris Clayton
email: cc5...@uxa.cso.uiuc.edu (mis...@uiuc.edu)
WWW: http://uxa.cso.uiuc.edu/~cc56056
Edward John Auerbach
: Hi,
: Someone knows how to remove AgNO3 on hands.
: Thanks for my hands !!!!!!!!!
I think you'll have to wait for it to wear off.
I don't have a text handy, but isn't silver nitrate a carcinogen? It
doesn't sound right, but for some reason I keep thinking there is some
danger associated with it besides the obvious skin problems.
--
Eddie Auerbach, University of Florida, Gainesville FL
WWW - http://grove.ufl.edu/~eja
email - e...@ufl.edu
Matt Wessel
>Toto Coutougno (vanti...@uliiui.unil.ch) wrote:
>: Hi,
>: Someone knows how to remove AgNO3 on hands.
>: Thanks for my hands !!!!!!!!!
>
>I think you'll have to wait for it to wear off.
>
>I don't have a text handy, but isn't silver nitrate a carcinogen? It
>doesn't sound right, but for some reason I keep thinking there is some
>danger associated with it besides the obvious skin problems.
Merck claims AgNO3 is a poison, but says nothing about it being carcinogenic.
Matt W.
Miller H. Peterson
<m...@zeus.chem.psu.edu> wrote:
> e...@grove.ufl.edu (Edward John Auerbach) wrote:
> >Toto Coutougno (vanti...@uliiui.unil.ch) wrote:
> >: Hi,
> >: Someone knows how to remove AgNO3 on hands.
> >: Thanks for my hands !!!!!!!!!
> >
>KODAK Silver Stain Remover S-10
Water 750 ml
Thiourea 75 gm
Citric Acid 75 gm
Water to make 1 liter
I would swab this on for as short a time as possible. Also good for
removing stains from clothes. CAUTION: Thiourea is a strong chemical
fogging agent for photographic film. It is also very difficult to remove
from skin. Wash hands with solution of one fluid ounce of Clorox in one
quart of water.
Or - the Ag stain will wear off in a week or so!
Pete
Yanlong Li
> Hi,
> Someone knows how to remove AgNO3 on hands.
> Thanks for my hands !!!!!!!!!
Your hands turned brown, right?
Next time, wear gloves.
Jeff E. Janes
: Toto Coutougno <vanti...@uliiui.unil.ch> writes:
:
: >Hi,
: >Someone knows how to remove AgNO3 on hands.
: >Thanks for my hands !!!!!!!!!
: I'm pretty sure that's the compound my mother said her college lab
: instructor used to determine the care they took in the lab. They'd do
: something
: were blackened was not careful enough. It worked because it _couldn't_ be
: washed off!
: I'm sure it'll go away after awhile. :)
I've always heard about these silver nitrate stains, but I've never been
staine by it. I have used it a number of times, and have never been
accused of being neat and tidy in lab. I know I've got some on my skin
at least twice, with no effect. Does anyone know how concentrated a
solution must be to cause stains?
--
Jeff Janes jej...@mtu.edu at Michigan Technological University
We have physicists, geometricians, chemists, astronomers, poets,
musicians and painters in plenty; but we no longer have a citizen among
us. --Jean Jacques Rousseau
Stephen W. Commiskey
Best way I know of to get AgNO3 off your hands is to wait a few days :)
Try using an abrasive hand cleaner -- e.g. Lava soap or something similar.
Stephen Commiskey
--
-------------------------------------------------------------------------------
Stephen W. Commiskey sw...@fermi.clas.virginia.edu
Main address----> comm...@urvax.urich.edu
Chemistry major sw...@mathcs.urich.edu
James Ianni
: : Someone knows how to remove AgNO3 on hands.
: : Thanks for my hands !!!!!!!!!
: I think you'll have to wait for it to wear off.
: I don't have a text handy, but isn't silver nitrate a carcinogen? It
^^^^^^^^^^
No, I don't think so. I had an ingrown toe-nail once, and the foot-doctor
applied some AgNO3 to remove some dead skin off....
Edward John Auerbach
: I've always heard about these silver nitrate stains, but I've never been
: staine by it. I have used it a number of times, and have never been
: accused of being neat and tidy in lab. I know I've got some on my skin
: at least twice, with no effect. Does anyone know how concentrated a
: solution must be to cause stains?
I don't know, but it took a few seconds before my hand turned yellow after
treating it with a bottle of 16M nitric acid. I was just working along, and
all of a sudden my hand seemed rather warm.. <g>
WILLIAM DAILEY
: : Toto Coutougno <vanti...@uliiui.unil.ch> writes:
: :
: : >Someone knows how to remove AgNO3 on hands.
: : >Thanks for my hands !!!!!!!!!
: :
: : instructor used to determine the care they took in the lab. They'd do
: : something
: : With it, and then show their hands at the end of the period and whoever's
: : hands
: : were blackened was not careful enough. It worked because it _couldn't_ be
: : washed off!
: : I'm sure it'll go away after awhile. :)
: I've always heard about these silver nitrate stains, but I've never been
: staine by it. I have used it a number of times, and have never been
: accused of being neat and tidy in lab. I know I've got some on my skin
: at least twice, with no effect. Does anyone know how concentrated a
: solution must be to cause stains?
: --
: Jeff Janes jej...@mtu.edu at Michigan Technological University
: We have physicists, geometricians, chemists, astronomers, poets,
: musicians and painters in plenty; but we no longer have a citizen among
: us. --Jean Jacques Rousseau
it doesn't stain until it is exposed to light. light turns it
from brown to an almost purple color. the lower the concentration the
lighter the color. i guess when you spilled it on yourself you didn't
go into the light, either that or you have dark pigmented skin and it
just didn't show through.
bill
Doug McDonald
>Jeff E. Janes (jej...@mtu.edu) wrote:
>: I've always heard about these silver nitrate stains, but I've never been
>: staine by it. I have used it a number of times, and have never been
>: accused of being neat and tidy in lab. I know I've got some on my skin
>: at least twice, with no effect. Does anyone know how concentrated a
>: solution must be to cause stains?
>
I've gotten stains from it while doing exotic photo processes. YEs, they
are very black. Someone mentioned a thio-something removal method.
I've used Farmer's reducer. You mix about a teaspoon each of
sodium or potassium ferricyanide [sic] [NOT ferrocyanide] and sodium
or potassium bromide and dissolve in about 250 cc of water. You decant
the clear liquid and swab this liberally over the afflicted spot on
skin or clothing. Eventually the spot will go away. You have now converted
the silver to silver bromide, which is still on the object. You remove this
with ordinary photograpic fixer, or plain sodium thiosulfate solution.
None of these chemicals are very poison, unless you eat or drink them.
I've also tried the bleach-fix used in the modern processes of color
photography. They don't work. (The method I use uses chemicals from
the predecessor color negative process called C-22).
P.S. Gold (i.e. H2AuCl4) or platimun (H4PtCl6) makes purple stains on skin.
I've not found a remover for these.
Doug McDonald
Warren Vidrine
the stain with a solution of Na hypochlorite, then soak your
hands in Na thiosulfate to ge out the Ag salts. Then, of
course, you will have to deal with the skin irritation that will
result from this treatment, as well as depigmentation and
possible peeling.
Caution & cheap gloves work much better than this treatment.
--
Warren Vidrine, Vidrine Consulting
Tel 1-(714)-489-8372, FAX 1-(714)-489-8379
e-mail: vid...@aol.com
amde...@gold.up.ac.za
>From: mcdo...@aries.scs.uiuc.edu (Doug McDonald)
>Subject: Re: *** How to remove AgNO3 on hands ?
>Date: Sat, 24 Jun 1995 15:35:22 GMT
>>Jeff E. Janes (jej...@mtu.edu) wrote:
>>: I've always heard about these silver nitrate stains, but I've never been
>>: staine by it. I have used it a number of times, and have never been
>>: accused of being neat and tidy in lab. I know I've got some on my skin
>>: at least twice, with no effect. Does anyone know how concentrated a
>>: solution must be to cause stains?
>>
>I've gotten stains from it while doing exotic photo processes. YEs, they
>are very black. Someone mentioned a thio-something removal method.
>I've used Farmer's reducer. You mix about a teaspoon each of
>sodium or potassium ferricyanide [sic] [NOT ferrocyanide] and sodium
>or potassium bromide and dissolve in about 250 cc of water. You decant
>the clear liquid and swab this liberally over the afflicted spot on
>skin or clothing. Eventually the spot will go away. You have now converted
>the silver to silver bromide, which is still on the object. You remove this
>with ordinary photograpic fixer, or plain sodium thiosulfate solution.
Take care with the bromide solution. The bromide ion is toxic. It causes
cells to die prematurely, or to divide abnormally because of deformed cell
walls.
In fact, the bromide ion is not necessary at all. One can remove much of the
silver stain, especially in the early stages, by merely the thiosulpate
solution.
>None of these chemicals are very poison, unless you eat or drink them.
>I've also tried the bleach-fix used in the modern processes of color
>photography. They don't work. (The method I use uses chemicals from
>the predecessor color negative process called C-22).
>P.S. Gold (i.e. H2AuCl4) or platimun (H4PtCl6) makes purple stains on skin.
>I've not found a remover for these.
>Doug McDonald
At de Lange
Pretoria
AlChazz
skin. That's why it's black. You'll have to wait until it is replaced with
new dead skin. :-)
axels
One way to remove it is using about 10% solution of Na2S2O3 (substance
widely used in photography) which is harmless undoubtly.
The other way is to wait for two days.
On 22 Jun 1995, Toto Coutougno wrote:
Antoni S. Gozdz 21621
>
>P.S. Gold (i.e. H2AuCl4) or platimun (H4PtCl6) makes purple stains on skin.
>I've not found a remover for these.
Since the use of aqua regia in this instance is not recommended, perhaps
first dissolving Au with the tincture of iodine followed by the
treatment with thiosulfate solution would work? Unfortunately, I don't
know how to dissolve Pt without dissolving the 'substrate'...
But, seriously, why not wear at least latex gloves when working
with these compounds?
Tony
---------------------
Antoni S. Gozdz PWr '72 'Atoms are not things'
to...@nyquist.bellcore.com W. Heisenberg
Doug McDonald
>In article <mcdonald.15...@aries.scs.uiuc.edu> mcdo...@aries.scs.uiuc.edu (Doug McDonald) writes:
>>
>>P.S. Gold (i.e. H2AuCl4) or platimun (H4PtCl6) makes purple stains on skin.
>>I've not found a remover for these.
>Since the use of aqua regia in this instance is not recommended, perhaps
>first dissolving Au with the tincture of iodine followed by the
>treatment with thiosulfate solution would work? Unfortunately, I don't
>know how to dissolve Pt without dissolving the 'substrate'...
>But, seriously, why not wear at least latex gloves when working
>with these compounds?
Because when I did this, in the 1960's, nobody used gloves. In fact,
in our undergrad labs, gloves were forbidden! "If you used gloves,
we couldn't grade you on whether your hands got stained".
I did get allowed to use gloves when handling betanapthylylamine by
giving the TA a graphic description of the treatment used for
bladder cancer, which is caused by that chemical.
Doug McDonald