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Question about cleaning chemicals
Just curious. Why should turpentine not be used for dissolving/removing tar and other related substances from coins. It appears to me that it would do a better job than acetone on certain greasy residue. The coin can always be bathed in goo gone and acetone afterward to remove any turpentine residue.
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BadThad could probably explain it best....but I believe that turpentine is acidic.
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Besides being nasty to work with (harsh fumes, irritating to skin/eyes, flammable) turpentine is actually a variable mixture of many non-polar turpine compounds. In that sense, it's rather unpredictable for coin conservation purposes. I have experimented with it and found it can adversely affect the patina.
When performing conservation, you want predictable results - which is why we typically choose single component solvents such as water, acetone and xylene. Turpentine is a non-polar solvent, for that, we have xylene, which will give much more controlled results.
VERDI-CARE™ ALL METAL CONSERVATION FLUID
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