Whst is the proper name of the green crud on this coin?
ajaan
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Not as bad as the image shows.
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Sorry couldn't resist.
Looks like some sort of PVC damage.
Why step over the dollar to get to the cent? Because it's a 55DDO.
Green stuff looks crumbly in your image-some might detach with a soaking or very gentle touching with a q-tip and acetone.
Recently had a green crumb detach with absolutely no impact to the coin surface on a Russian piece; very pleased with acetone. Just pretend you're in Colorado, ankle-deep in a stream, panning for gold. That's the kind of action you want, whether with a q-tip or small (quality) brush or just swirling of the small glass bowl. Gotta be gentle.
And of course, the obligatory "please ventilate and rinse with boiled water"declaimer . I needed 1Jester to feel safe.
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Copper(II) acetate is soluble in alcohol and water and slightly soluble in ether and glycerol. It melts at 115 °C and decomposes at 240 °C. It can be prepared by reacting copper(II) oxide, CuO, or copper(II) carbonate, CuCO3, with acetic acid, CH3COOH .
And Laurent, I don't rinse with water after an acetone bath! LOL...
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<< <i>verdigris
Copper(II) acetate is soluble in alcohol and water and slightly soluble in ether and glycerol. It melts at 115 °C and decomposes at 240 °C. It can be prepared by reacting copper(II) oxide, CuO, or copper(II) carbonate, CuCO3, with acetic acid, CH3COOH . >>
If it is soluble in alcohol, does that mean it can be removed by an alcohol dip? Acetone did nothing to remove verdigris on one of my coins, and I'd like to find something that will take it off.
Obscurum per obscurius
<< <i>I think it's called "ajaan poop".
Looks like it came from a mushroom with a runny nose....
<< <i>
<< <i>verdigris
Copper(II) acetate is soluble in alcohol and water and slightly soluble in ether and glycerol. It melts at 115 °C and decomposes at 240 °C. It can be prepared by reacting copper(II) oxide, CuO, or copper(II) carbonate, CuCO3, with acetic acid, CH3COOH . >>
If it is soluble in alcohol, does that mean it can be removed by an alcohol dip? Acetone did nothing to remove verdigris on one of my coins, and I'd like to find something that will take it off. >>
This will - Biox
<< <i>
<< <i>
<< <i>verdigris
Copper(II) acetate is soluble in alcohol and water and slightly soluble in ether and glycerol. It melts at 115 °C and decomposes at 240 °C. It can be prepared by reacting copper(II) oxide, CuO, or copper(II) carbonate, CuCO3, with acetic acid, CH3COOH . >>
If it is soluble in alcohol, does that mean it can be removed by an alcohol dip? Acetone did nothing to remove verdigris on one of my coins, and I'd like to find something that will take it off. >>
This will - Biox >>
Does that have some 1,1,1-TCE in the bottle?
When using acetone (xylol always seemed more aggressive) you should be able to "roll" the Q-tip over the offending greenie patch and have something let loose. However, just because it's green doesn't mean it copper acetate. It could be a host of other organic compounds.
BTW, 1,1,1-TCE is now banned as a carcinogin (sp)......xylol will also cause chunks of your liver to fall off...lungs too, so don't breathe the stuff or you might wake up with a clean coin but a third thumb protruding from your ear.
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<< <i>verdigris. >>
Yup. And it can't be removed without damaging the coin further.
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