Log in or Sign up
Coin Talk
Home
Forums
>
Coin Forums
>
Coin Chat
>
PVC removal.
>
Reply to Thread
Message:
<p>[QUOTE="bruthajoe, post: 4958664, member: 108656"]I know there there are countless articles, videos and info about this but I would like to share an observation about removing volatile organic compounds which can be deposited on the surface of a coin during the off-gassing of polyvinyl chloride. I may have missed this somewhere along the line during others presentations of how to deal with PVC residue. I recently acquired 2 proof Jefferson nickels which obviously had PVC residue but I was able to get them at a fair price and did so confidently knowing that PVC deposits can be removed with the use of acetone. There are many demonstrations showing this process and I have found most of these demonstrations do not follow through on the complete removal of the voc's. I believe I was very successful at removing all of the deposits on both of these coins. But this came with a learning curve. I had followed the common method of soaking the coin for about 30 seconds to a minute. I was initially not happy at all with the result. I proceeded to soak the coin and use a Q-tip to roll the surface to agitate the residue followed by another rinse of acetone. What I immediately noticed was the contamination was not gone but had moved around the coin. My reasoning led me to believe that although the acetone dissolved the solids, after removing the coin the acetone quickly evaporates and leaves the solids re-deposited on the surface of the coin. I did this several times and several times the PVC deposits would appear in another place and sometimes even worse. So it appeared to me although the acetone dissolves the compounds it also becomes quickly contaminated with them. This led me to one final step which I believe is key in completely removing the contamination. Immediately after removing the coin from acetone as it is still wet with acetone and before the acetone can evaporate and redeposit the contamination, I placed the coin in a very soapy solution of water and rinsed it. My first results were dramatic. Almost all of the contamination had gone. I repeated this two more times with spectacular results. I did my best to illustrate the difference below.[ATTACH=full]1192056[/ATTACH] [ATTACH=full]1192057[/ATTACH] [ATTACH=full]1192055[/ATTACH] [ATTACH=full]1192061[/ATTACH] [ATTACH=full]1192060[/ATTACH][ATTACH=full]1192063[/ATTACH] [ATTACH=full]1192062[/ATTACH] [ATTACH=full]1192065[/ATTACH] [ATTACH=full]1192066[/ATTACH][/QUOTE]</p><p><br /></p>
[QUOTE="bruthajoe, post: 4958664, member: 108656"]I know there there are countless articles, videos and info about this but I would like to share an observation about removing volatile organic compounds which can be deposited on the surface of a coin during the off-gassing of polyvinyl chloride. I may have missed this somewhere along the line during others presentations of how to deal with PVC residue. I recently acquired 2 proof Jefferson nickels which obviously had PVC residue but I was able to get them at a fair price and did so confidently knowing that PVC deposits can be removed with the use of acetone. There are many demonstrations showing this process and I have found most of these demonstrations do not follow through on the complete removal of the voc's. I believe I was very successful at removing all of the deposits on both of these coins. But this came with a learning curve. I had followed the common method of soaking the coin for about 30 seconds to a minute. I was initially not happy at all with the result. I proceeded to soak the coin and use a Q-tip to roll the surface to agitate the residue followed by another rinse of acetone. What I immediately noticed was the contamination was not gone but had moved around the coin. My reasoning led me to believe that although the acetone dissolved the solids, after removing the coin the acetone quickly evaporates and leaves the solids re-deposited on the surface of the coin. I did this several times and several times the PVC deposits would appear in another place and sometimes even worse. So it appeared to me although the acetone dissolves the compounds it also becomes quickly contaminated with them. This led me to one final step which I believe is key in completely removing the contamination. Immediately after removing the coin from acetone as it is still wet with acetone and before the acetone can evaporate and redeposit the contamination, I placed the coin in a very soapy solution of water and rinsed it. My first results were dramatic. Almost all of the contamination had gone. I repeated this two more times with spectacular results. I did my best to illustrate the difference below.[ATTACH=full]1192056[/ATTACH] [ATTACH=full]1192057[/ATTACH] [ATTACH=full]1192055[/ATTACH] [ATTACH=full]1192061[/ATTACH] [ATTACH=full]1192060[/ATTACH][ATTACH=full]1192063[/ATTACH] [ATTACH=full]1192062[/ATTACH] [ATTACH=full]1192065[/ATTACH] [ATTACH=full]1192066[/ATTACH][/QUOTE]
Your name or email address:
Do you already have an account?
No, create an account now.
Yes, my password is:
Forgot your password?
Stay logged in
Coin Talk
Home
Forums
>
Coin Forums
>
Coin Chat
>
PVC removal.
>
Home
Home
Quick Links
Search Forums
Recent Activity
Recent Posts
Forums
Forums
Quick Links
Search Forums
Recent Posts
Competitions
Competitions
Quick Links
Competition Index
Rules, Terms & Conditions
Gallery
Gallery
Quick Links
Search Media
New Media
Showcase
Showcase
Quick Links
Search Items
Most Active Members
New Items
Directory
Directory
Quick Links
Directory Home
New Listings
Members
Members
Quick Links
Notable Members
Current Visitors
Recent Activity
New Profile Posts
Sponsors
Menu
Search
Search titles only
Posted by Member:
Separate names with a comma.
Newer Than:
Search this thread only
Search this forum only
Display results as threads
Useful Searches
Recent Posts
More...