PVC and airtite in safe

No, Of course not, and If I implied that, I apologize for my wording.

I said this in the previous posting

I thought this indicated I was 'believing you had seen such' as that is what I intended. I didn't say I "didn't accept" what you said.

There are a lot of thing I believe in , even though I <strong>personally</strong> haven't seen them, such as dark matter, Quantum effects, synthetic life, etc., because they fit into known sets of chemical and physical events.

The original argument was against "that acetone reacted with metals and alloys such as coinage (paraphrased)", not that acetone couldn't react to material on the coin metal surface. I do not believe acetone can directly react with copper, no matter how reactive copper is, in environments that we normal exist, based on even the latest chemical evidence. Even seeing a reaction would only lead me to the conclusion that<strong> something on the metal was reacting, not the metal itself. I have faith that if it was PVC , acetone could remove it, but not copper metal. I am confident that I could put a single BU lincoln cent in acetone for 15 minutes, remove, let dry , and weigh to 0.0001 grams, and put into a sealed glass jar of acetone, and leave it for 5 years, that it would weight the same when I removed, dried and weighed it again.

Doug , I meant no disrespect for you or your opinion, just that I disagreed with the conclusions reached. IMO.

Jim

 

Log in or Sign up to hide this ad.

Well what would the solution be? More soaking time in the acetone? I am a firm believer in distilled water dips after anything being done to a coin. If this reaction occured, would further acetone dips and distilled water baths remove it?

Sorry but I have had too many bad things happen when I did not rinse in distilled water over the years to ever do anything to a coin without this step.

Chris

 

Every coin and surface residue problem is different, I cannot really answer your question. However, I always recommend using the solvent polarity ladder when performing a conservation.

1) distilled water
2) acetone
3) xylene

 

Because copper is able to complex with many more elements (and molecules) than those other metals.

 

On another note, I just placed an aluminum SCD in acetone and got a massive amount of a plastic like residue off of a 38mm SCD. Has anyone heard of medals being dipped in plastic or did I remove a massive amount of plastic residue?

 

Beats me. It might help if you could provide a clue about what SCD stands for.

 

LOL...point taken my friend.

 

SCD is a so called dollar. Rather it was an aluminum medal made for the Columbian exposition in 1893. I looked at a photograph of what a better example looked like and determined that some kind of paint/varnish had been used to give it a dark background. The example I had still had the substance on it but the darker background had turned into a light gray opaque substance. When I dipped it into the acetone all the substance came off at one time. Rather be careful of dipping medals they may have an organic substance placed onto it when it was made. At the very least the stuff that comes off will mess up any container you have the acetone and the medal in.

 

Thanks for the information. I was beginning to wonder if I should dip medals. I still am amazed how much came off and how badly it "glued" things together.