nannah
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Crystals formed in my acetone. What could they be?
Hi guys. Today when i took a look at my OTC acetone i found that small white crystals had formed. I have it standing in the fridge, in a erlenmeyer
flask thats wrapped in aluminum foil to keep it from evaporating.
Before i put it in the fridge a couple of days ago i tried to dry it with some CaCl² to see if there were any water in it.
On the bottle and its msds it said that its just acetone in there.
/n
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DraconicAcid
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Weird. Maybe a very small amount of calcium chloride dissolved in the acetone, and crystallized out when you put it in the fridge.
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Bert
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Get a crystal out, dry it and place in a methanol or natural gas burner flame on a clean loop of Pt wire. Does it give the characteristic Calcium
pink-orange spectrum to a flame?
[Edited on 4-1-2015 by Bert]
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chemrox
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use of CaCl2 with ketones and aldehydes
Due to the possible presence and/or formation of Ca(OH)2 and CaCl(OH) using CaCl2 is not recommended so even if the test for CaCl2 fails you may have
one of the impurities listed ppt or a reaction product from the reaction of hydroxyl with acetone (http://bit.ly/1AcxPSh). I haven't worked through this but I would imagine a small degree of nucleophillic attack (Bert?)possibly forming a ppt.
You might try a melting point.
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