Acetone - Page 2 - Coin Community Forum

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Author	Replies: 21 / Views: 3,402	Page: of 2

BadThad Bedrock of the Community United States 19949 Posts	Posted 02/15/2011 11:58 pm Indeed. I think in a lot of these reported cases there was an artificial colorant or other residue that was removed to reveal the true surfaces. I've used lab grade acetone on thousands of copper coins without ill-effect. I've even soaked a few for weeks to try to replicate the reported "bad results" and nothing happened. I know Carl has done it too and has gone so far as to place the coins in the sun while they're soaking. Lincoln Cent Lover! VERDI-CARE™ INVENTOR https://verdi.care/ Report this Post to the Staff
just carl Bedrock of the Community United States 20753 Posts	Posted 02/16/2011 10:18 am Some time back there was a flood or references to an an article on the web on how Copper is effected by Acetone in Sunlight. I naturally had to see this to believe it. So I placed Copper coins in a glass jar with Acetone and placed them in the Sun, the shade, in cold weather, hot weather, in my garage, in my house on a window sill and all over a period of several weeks to almost a Month. Nothing happed except I got tired of moving the jar. The solution did not change, the coins did not change. The jar did not change. Summation is the people that made those statements possibly used a different Sun than I did. On another investigative adventure I placed a variety of coins in a jar with Acetone. Copper coins sucha s Large Cent, Indian cent, Lincoln Cents, Nickel, Dime. Allowed them to soak for a long time and the Large Cent and Indian cent took on a real Red appearance. One Lincoln Cent got real dark. Other than that, no real change. Summation is not to mix coins in Acetone. Report this Post to the Staff
just carl Bedrock of the Community United States 20753 Posts	Posted 02/16/2011 10:58 am Quote: Is the acetone for cleaning copper coins, the same as the "acetone" beauty parlors or manicurists use to clean fingernails before applying nail lacquer? thanks That is an easy one. Just go to any store and pick a bottle of fingernail polish remover and read the lable. More STUFF in that bottle that most people can't even pronounce. It is for women's nails, not coins. Quote: Speaking of zillions, A man is reading a newspaper and one of the headlines reads: "An airplane crash in South America. Two Brazilian pilots are killed!". A woman sitting next to the man asks, excuse me, sir, how many is a brazilian? I wrote that one down. Edited by just carl 02/16/2011 11:00 am Report this Post to the Staff
scurry64 Pillar of the Community United States 900 Posts	Posted 04/08/2011 1:10 pm Quote: I find it best to do several quick soaks with a change of acetone between each. Please define quick. Thank you. Report this Post to the Staff
just carl Bedrock of the Community United States 20753 Posts	Posted 04/08/2011 3:39 pm In the past I've had a few sort of bad experiences with over soaking of coins in Acetone. And as already noted it could and probably did occure due to several reasons. 1. The purity of the Acetone was not as pure as it should have been. 2. Excessive dust in the air settled on the Acetone if and when the lid was left off. 3. The glass jar this was in was not as clean as it should have been for experimentation purposes. 4. And now here is one possible problem that people never think about. The glass itself dissolves into the Acetone. For this one you just remember there are numerous types of glass on the market today. So many of our labs are restricted to Pyrex or similar types of glass. Yet glass itself is not really such a great solid as people think. Some glass products actually sag due to lack of solidity. I always remember in a chem class it was discussed how way back a scientist attempted to make the purest water possible at that time. He did many distilling steps and finally enclossed his sample in a very, very claen jar and sealed the top and all with glass. This now is in a museum somewhere. The water is now all cloudy. Due to the water being so pure, it just had to dissolve some of the glass. Water is one of the worlds greatest substances for absorbing almost anything. Would be interesting to see if Acetone would also dissolve glass over a long, long period of time. As noted in Wikepedia: Quote: Normally, other substances are added to simplify processing. One is sodium carbonate (Na2CO3), which lowers the glass transition to about 1500 Â°C. However, the soda makes the glass water soluble, Report this Post to the Staff
JimHSoars Valued Member United States 72 Posts	Posted 04/26/2012 12:19 pm Hi: Perhaps this post in the Acetone Question thread might help. - Jim Report this Post to the Staff
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