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<p>[QUOTE="RonSanderson, post: 6585608, member: 77413"]Different solvents remove different things. Don’t give up without trying all three of the commonly recommended soaks: Distilled water, acetone, and xylene. There are a number of threads on CoinTalk about this. You may want to search for some of them using “xylene”. Again, this is available in the paint department of hardware stores and big-box home improvement stores.</p><p><br /></p><p>Edit: [USER=116145]@MIGuy[/USER] </p><p>I haven’t heard anyone try heating the distilled water, but chemical reactions occur more quickly at higher temperatures, so I can’t see that it would hurt anything. </p><p><br /></p><p>Most folks have just put the distilled water into a clean container and dropped the coin in for a while. Distilled water is regarded as fairly active - in the distilled state there aren’t any extraneous minerals buffering the active nature of the H and OH radicals, so when they have something they can react with, like some contaminants, the water can actively strip the crud off the metal surface. </p><p><br /></p><p>Some of the working chemists on the forum can tidy up this statement for you - my chemistry was over 50 years ago, now.[/QUOTE]</p><p><br /></p>
[QUOTE="RonSanderson, post: 6585608, member: 77413"]Different solvents remove different things. Don’t give up without trying all three of the commonly recommended soaks: Distilled water, acetone, and xylene. There are a number of threads on CoinTalk about this. You may want to search for some of them using “xylene”. Again, this is available in the paint department of hardware stores and big-box home improvement stores. Edit: [USER=116145]@MIGuy[/USER] I haven’t heard anyone try heating the distilled water, but chemical reactions occur more quickly at higher temperatures, so I can’t see that it would hurt anything. Most folks have just put the distilled water into a clean container and dropped the coin in for a while. Distilled water is regarded as fairly active - in the distilled state there aren’t any extraneous minerals buffering the active nature of the H and OH radicals, so when they have something they can react with, like some contaminants, the water can actively strip the crud off the metal surface. Some of the working chemists on the forum can tidy up this statement for you - my chemistry was over 50 years ago, now.[/QUOTE]
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