I have a big problem...
I'd like to remove ink from stamps, but i dont know what is right chemical which can remove it.
I try to reacting many kinds substances for example
-sodium borohydride soluted in THF
-cc. hydrazine and diluted hydrazine
-king's water
-35% H2O2
-organic solvents (acetone, methanol, pentanol, ethanol, 2-propanol, ethyl-acetate, nitromethane, toluene, benzaldehyde, butoxy ethanol, THF, propane,
xylol, dichloromethane, carbontetrachloride, chloroform, petrol)
-inorganic salt solution (citric acid, NaOH, Potassium ferrocyanide, Potassium ferricyanide, sodium pyrophospate, sodium dithionite, sodium hydrogen
sulfite, potassium sulfite etc.)
But nothing cant remove ink...
Can someone help me, please?
or give advice?
Thank you!bbartlog - 5-5-2011 at 12:33
So what's the ink, and what is it on? Frankly I find it very strange that you would have access to all of these chemicals, have tried them all, and
yet somehow be ignorant of the fact that knowing what the ink is composed of is the key to answering your question. kicsiatom - 5-5-2011 at 13:12
We know, the ink which saturated on sponge is odorless, dark coloured, on the paper is black.
The ink can dissolve in water, then it is black coloured, this solution can decolour bleach, peroxysulfuric acid and nascens hydrogen (produce Zn+NaOH
or Zn+HCl!), the bleach and peroxysulfuric acid damage the paper and other paints, the nascens hydrogen cant remove ink from stamps...
The ink can dissolve in ethyl alcohol, then it is dark green coloured.
If this solution reacting with sodium, changes colour to pink, which subside after some days.
The ink cant dissolve in diethyl ether, dichloromethane, carbon tetrachloride, but can dissolve (very poor!) in acetone, then it is yellow and pale
brown coloured...
If the alcohol solution reacting to hydrazine, the solution colour change to blue.
It is interesting, if the ink reacting concentrated base or acid ( H2SO4, NaOH) the ink colour change to pink!
But on the paper, much difficult reacting with something...The WiZard is In - 5-5-2011 at 13:18
Raises up now the cry – Burial as sea was not in keeping with
Muslim tradition. Ok. You want a tradition favored by the
Religion of Peace, they should have strapped a suicide vest
on him and then used the remains for catfish food.
As an expedient – a half-dozen thermite grenades would have
served. Their placement being optional.
He would still be alive if he had followed my advice —
get a job in a Brooklyn (3 million people) Yemeni bodega. As
Sherlock Holmes said – the best place to
hide something is in plain sight. gutter_ca - 5-5-2011 at 16:32
Wiz, reread the thread. He's talking about inkpad ink for rubber stamps.
Edited because my spacebar was on vacation..
[Edited on 5/6/2011 by gutter_ca]Arthur Dent - 5-5-2011 at 16:57
I recall a friend who used benzene to remove the obliteration ink without affecting (too much) the stamp's printing, but that was for monochrome
offset-printed old-style stamps. I don't know how the modern CMYK stamps would fare in that solvent.
Wiz, reread the thread. He's talking about inkpad ink for rubber stamps.
Edited because my spacebar was on vacation..
[Edited on 5/6/2011 by gutter_ca]
I have a big problem...
I'd like to remove ink from stamps,
Is open to interpolation. [I wanted to use interpretation,
however, my spell checker choked on my spelling and
suggested interpolation which sounds more impressive.] food - 5-5-2011 at 18:19
I thought that they meant stamps
now that's been cleared up I know that they actually meant stamps
still don't know what's being discussedkicsiatom - 5-5-2011 at 19:37
I thought: a small adhesive token stuck on a letter or package to indicate that that postal fees have been paid.
Anyways i thought what if i try to react with LiAlH4 soluted in diethyl ether?
Or what do i do to analyze the ink components?gutter_ca - 6-5-2011 at 08:41
Ha! Guess it's both...kicsiatom - 6-5-2011 at 11:52
What can i do that i know what is the ink's component?
Or what can damage/remove ink?
