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 Replies: 92 / Views: 20,721 |
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Valued Member
United States
96 Posts |
I am also a chemist and can clear say that acetone will not harm the surface of coins. I was thinking about using MEK and Acetone washes. Since MEK is non polar and Acetone is polar they are not miscible. I haven't practice chemistry in 20 years but maybe another chemist out there could perform a few tests using MEK, distilled water and Acetone and post the results.
On a side note, I tried using acetic acid to speed up the process of raising dates on buffalo. (Vinegar is a 6% acetic acid solution in water whereas straight acetic acid is 40% solution in water, 6 times stronger). Well, as I figured, the acetic acid was too harsh and , it appears, dissolved the harder date alloy. So, to everyone out there, DON'T USE GLACIAL ACETIC ACID!
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Bedrock of the Community
United States
19968 Posts |
Quote:
On a side note, I tried using acetic acid to speed up the process of raising dates on buffalo. Nitric acid is #1 for bringing out dates. I use a micropipet with conc HNO3 and most dates show in under a minute. Plus, you don't ruin the whole coin if you use just a few microliters on the date area. Lincoln Cent Lover!VERDI-CARE™ INVENTOR https://verdi.care/
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Valued Member
United States
96 Posts |
When I worked in the lab, we threw a nickel into concentrated nitric acid.
The nitric acid decomposed the nickel in less than a minute and created a lot of fumes. I believe the solution was a bluish green color.
Mack
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Pillar of the Community
 United States
1795 Posts |
After the first of the year I will start my final project with this and try all the different methods along with before and after photos of coins cleaned. I have been saving coins with similar problems to clean. Hopefully we can learn something useful. But I do agree cleaning coins is really not the thing to do except when one might need a certain coin and makes note that it was cleaned. But again that is my opinion.
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Valued Member
United States
112 Posts |
Great thread about acetone and other cleaning options. Thanks for all the info... Please, please post some pictures. I have been researching acetone and it seems safe, but I am a visual person and constantly am wanting more evidence. What seems to be lacking isn't information and opinions about acetone, but before and after photos.
P.S. thanks to all the science sorties!
Edited by Vesper
12/15/2012 01:34 am
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Bedrock of the Community
United States
19968 Posts |
Lincoln Cent Lover!VERDI-CARE™ INVENTOR https://verdi.care/
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Pillar of the Community
United States
1795 Posts |
Thank You Vesper I will do my best to provide you as well as the others with before and after photos of as many various cleaning methods as I possibly can.
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Pillar of the Community
United States
1795 Posts |
I believe I have enough coins ( many cents, halves, quarters and a few dollar coins). I bought glass containers for the assorted cleaning materials. I have different vinegars...rice and white. I have acetone for beauty shop and from hardware. Looking for the other types of chemicals mentioned here. In the process of taking before cleaning photo's of the coins to be cleaned. So that is my progress thus far.
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Pillar of the Community
United States
1795 Posts |
Now I have a problem trying to download photo's. I have a mac and download for image resize is not loading. Working on getting it to download the photo's. This is terrible!
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Bedrock of the Community
United States
10044 Posts |
I have a Mac and I switched to using Mozilla Firefox to load pics to CCF. For some reason CCF and Safari don't seem as compatible. Also - you can open your pic in preview on the Mac, choose save as, and use the slider (pink arrow) at the bottom of the screen to size your pic to 100 or below (yellow arrow shows size).  How much squash could a Sasquatch squash if a Sasquatch would squash squash? Download and read: Grading the graders Costly TPG ineptitude and No FG Kennedy halveshttps://ln5.sync.com/dl/7ca91bdd0/w...i3b-rbj9fir2Edited by Earle42
02/14/2013 08:51 am
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Rest in Peace
United States
4078 Posts |
Thanks Earle. I'm a Mac guy to.
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Bedrock of the Community
United States
10044 Posts |
No problem - its rare but sometimes when I have 7M pic from my camera, it will only reduce down to about 330K this way. So I save it as small as I can and then then upload it to the CCF optimizer to knock it all the way down to 100 or less.
How much squash could a Sasquatch squash if a Sasquatch would squash squash? Download and read: Grading the graders Costly TPG ineptitude and No FG Kennedy halveshttps://ln5.sync.com/dl/7ca91bdd0/w...i3b-rbj9fir2 |
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Pillar of the Community
United States
521 Posts |
Lots of great info, which I've enjoyed reading. But what happened to the after pictures of the vinegar soaked Buffalo nickels? |
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Pillar of the Community
United States
1795 Posts |
Earl just saw this now I know its on my mac somewhere...Ty Again
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Bedrock of the Community
United States
10044 Posts |
Just click on a picture and preview automatically opens
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Replies: 92 / Views: 20,721 |
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Posted 11/04/2012 11:31 pm
