Discussion in 'Coin Chat' started by Mojavedave, Aug 13, 2019.
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But since it's not exactly the same, I'd want to know for sure (e.g., testimony from other CT members who've actually used it) that it's as safe as acetone before using it on coins I intend to submit for grading.
The answer is no . . . IF MEK performs the same as acetone, which only removes organic compounds on the surface of a coin, and does react with or alter the surface of a coin in any way.
@desertgem suggests that MEK and acetone are interchangeable. Personally, if they were my coins, I'd pick up a quart of acetone at Home Depot or Lowe's for a few dollars and use that, just to be safe.
Not if all you do is soak/swish in the stuff. (Unless the coin has certain types of artificial toning.)
But that doesn't necessarily mean that your MEK is suitable for cleaning coins.
That is, there are different grades of chemical purity.
My Suggestion: Dip a junk coin in your MEK. Then let it air-dry, and see if it leaves a residue that won't rinse off with water or acetone.
BTW, acetone is better than MEK at dissolving water-soluble (polar) contaminants. Acetone is also cheaper and more widely available at retail stores.
More info for a sleepless night: The Differences Between MEK and Acetone
You were lucky you didn't blow your car up. in any case you probably had the cleanest engine in town.
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