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 Replies: 29 / Views: 10,702 |
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Rest in Peace
United States
18456 Posts |
I Use Acetone When A coin calls for it. But What's better for removing crud and slime from all coins ? Also is one more costly then the other ? one more question, why do some members say they give a Final rinse of the coin in distilled water. ? what is the benefit of that ?  |
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Rest in Peace
United States
4078 Posts |
Lets start with, the final rinse should be a clean bath of fresh acetone. Why? I believe the impurities in distilled water hurt the cleaning.
Acetone versus Xylene not sure of the results or cost. Wait for more informed members to post.
Good question T-BOP.
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Moderator
 United States
188770 Posts |
Quote:
Lets start with, the final rinse should be a clean bath of fresh acetone. Why? I believe the impurities in distilled water hurt the cleaning. Also, acetone will dehydrate the coin. No need to wipe or dab dry like you would after using water. As long as the last acetone rinse is fresh and clean, just let the coin air dry (takes seconds). Here is my go to post for coin conservation... http://www.coincommunity.com/forum/...ly_ID=447106 |
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Bedrock of the Community
United States
20753 Posts |
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Why? I believe the impurities in distilled water hurt the cleaning. IF it is distilled water, should be no impurities. |
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Bedrock of the Community
United States
94367 Posts |
In any event, avoid xylene - it is in a completely different class of chemicals, and is much more toxic than acetone, in addition to taking longer to evaporate.
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Moderator
United States
188770 Posts |
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IF it is distilled water, should be no impurities. For final rinse, acetone is still preferred over distilled water. |
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Rest in Peace
United States
4078 Posts |
 When it is distilled all impurities are taken out. I believe. Acetone is still the best last rinse. Edited by bpoc1
01/05/2016 5:35 pm
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Moderator
United States
188770 Posts |
Distilled water should be pure water. However, that assumes there are no impurities in the condenser or collection apparatus used. The advantage of acetone is the expedited drying time. Mere seconds, versus the minutes (or hours) for water.
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Moderator
Australia
16837 Posts |
Acetone and xylene do not work identically; acetone is more polar than xylene. There are things that will readily dissolve in acetone that won;t dissolve in xylene, and vice-versa. I have found xylene to be better than acetone at getting off really stubborn old stickytape residue, for example.
Xylene's drawbacks are: it's more toxic / less pleasant vapours (though personal reactions to the two chemicals may vary from "normal"); it's slower to evaporate and, for environmentally conscious, it's more polluting. Acetone is soluble in water, xylene is not, so cleaning up afterwards is easier with acetone.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis
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Pillar of the Community
United States
1314 Posts |
Is there any way to test the purity of distilled water?
I'm thinking of collecting some from a portable household dehumidifier.
Naturally, I'd start with a clean collection basin.
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Rest in Peace
 United States
18456 Posts |
 Ok , Thanks for everyone's findings on this subject. so it looks like the hands down winner is : Acetone and NO distilled water. |
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Valued Member
United States
398 Posts |
I was a distilled water guy but this post may of changed my mind ..... I use distilled as my well water has heavy minerals!
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Moderator
United States
188770 Posts |
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I'm thinking of collecting some from a portable household dehumidifier.
Naturally, I'd start with a clean collection basin. I would not. Air impurities are pulled in by the fan across the condenser coils (no filter is that good) and the basin is open, allowing dust to settle in it. |
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Bedrock of the Community
United States
19961 Posts |
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In any event, avoid xylene - it is in a completely different class of chemicals, and is much more toxic than acetone, in addition to taking longer to evaporate. Xylene has a VERY low acute toxicity, greater than 3500 mg/kg (rat/oral), it is basically NON-TOXIC to humans. While it's animal testing based toxicity is slightly lower than acetone, it's not enough to cause alarm. Due to it's slower evaporation rate compared with acetone, I actually prefer to work with xylene over acetone. Don't let unfounded "chemical phobia" keep you from using an important conservation solvent. |
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Bedrock of the Community
United States
19961 Posts |
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I would not. Air impurities are pulled in by the fan across the condenser coils (no filter is that good) and the basin is open, allowing dust to settle in it. INDEED! Never use dehumidifier water on coins. You also have to consider the bacteria level as it can also cause corrosion, residues or other strange problems. Lincoln Cent Lover!VERDI-CARE™ INVENTOR https://verdi.care/
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Bedrock of the Community
United States
19961 Posts |
Quote:
Is there any way to test the purity of distilled water? Conductivity, that's what labs use. Highly purified water has a resistance of about 18 MOhm, it's nearly non-electroconductive. Most of the conductivity of water is due to dissolved impurities and gases - which are removed during purification. As far as the need to test for use on coins - that's a non-factor. The widely available distilled or deionized water is good enough and I'm sure those manufacturers continuously monitor the conductivity of their products as it will tell them if there's a production problem. Edited by BadThad
01/06/2016 11:51 am
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Replies: 29 / Views: 10,702 |
Posted 01/05/2016 4:48 pm
