Specific Questions Re: Polarity Ladder - Step 2: Acetone

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dd27 Pillar of the Community United States 666 Posts	Posted 08/25/2016 5:49 pm Referring to BadThad's very helpful THE FIRST STEPS OF CONSERVATION, employing the solvent POLARITY LADDER, here are some specific questions. All the quotes are from BadThad's post [ http://www.coincommunity.com/forum/.57008#447106 ]. I decided to break this up into three posts as it was becoming rather long. This is Part II. Quote: STEP 2: ACETONE: Acetone chemically, OC(CH3)2 , is a very polar, organic, volatile solvent. High grade acetone can be purchased at most hardware stores. It can also be ordered over the internet in a higher grade like ACS (American Chemical Society) but at a much higher cost. It will remove many organic materials from the coin surface. * How long should one soak Lincoln cents in acetone? Should the acetone be changed once or twice, or is one soak good enough? * How many coins per ounce of acetone would you recommend? * Should one gently swirl the coins and acetone in the tightly sealed glass container, or would that potentially cause more problems than it's worth? * Which of the following acetone products would you buy? (Or others?) MG Chemicals Acetone (Pure Grade) 32 fl oz Can {hard to open - see reviews} Price: $9.46 - Free Shipping for Prime Members https://smile.amazon.com/gp/product...page_o04_s00 Cutex 16oz Pure Acetone - FREE Shipping $10.66 for 16 ounces $13.98 for 32 ounces $30.52 for 96 ounces https://smile.amazon.com/Cutex-16oz...pd_sbs_328_3 The Science Company®, NC-0007, Acetone 16oz Price: $14.95 + $8.49 shipping https://smile.amazon.com/Science-Co...pd_sbs_328_2 Edited by dd27 08/25/2016 5:54 pm Report this Post to the Staff

Saruma Pillar of the Community United States 968 Posts	Posted 08/25/2016 7:59 pm I'm not a chemistry expert so I'll let those guys delve deep into this. But I've found Acetone loosens up most gunk (that it is going to loosen) within a few minutes. You should just go down to Home Depot, Lowes, or a similar store and go to the paint section. They sell jugs of pure Acetone and Xylene right off the shelves there. I wouldn't deal with shipping unless you live far from a store like that Report this Post to the Staff
just carl Bedrock of the Community United States 20753 Posts	Posted 08/25/2016 9:36 pm The Acetone at Walmart, HomeDepot. Menards, etc usually sells for about $4 to $5 a quart. It is just as good as any you can get anywhere. Regardless of where you get some, pour some on a clean glass dish and allow to evaporate. If no residue, it is good. How long to let a coin lay in Acetone. I've had some pennies in Acetone for weeks due to just forgetting they were there. I suspect if you leave Copper coins in Acetone for a million years, not much would happen. However, you would have to find some way to go into the future to check. As a general rule, put a coin in Acetone for a few minutes. That should remove stuff that is disolvable in Acetone. Report this Post to the Staff
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