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Author: Subject: Ethyl Acetate?
smaerd
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[*] posted on 18-1-2011 at 08:18


Hahahaha I love this forum :D
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497
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[*] posted on 10-6-2011 at 05:23


Well, I don't want to turn this into a dick sizing competition... but I got you all beat! Fortunately it did not come out of thermometers, though I've broken more than my fair share of them. Heheh.. I suppose its only a matter of time before some lucky bastard blocks half the picture with their 76 pound flask full of it...

On a more relevant note, according to google saturating impure EtOAc with CaCl2 (I'd leave excess in the still pot) and distilling it directly should break the azeotropes with water and alcohols. I suspect you may get better results that way.. With a bit of alcohol contamination, you could have way more water in your EtOAc than you bargained for and still no phase separation. Trying to get that out by letting it sit on CaCl2 then filtering may be ineffective, or at least inefficient. Of course you'll still have to dry it more thoroughly after distilling from the CaCl2 solution, but at least there should only be a small amount of H2O/EtOH to deal with.

I wonder what other additives could be used besides CaCl2? There's a lot of options.. Maybe a nonionic hygroscopic compound like glycerol or glycol could work well? With a liquid hygroscopic agent there would be no limitation on the concentration and you could afford to use a lot. At least they're very cheap, OTC and reusable. Oh, or use both CaCl2 and glycol/glycerol! :P

I'm going to attempt to distill some nail polish remover soon so I'll try to post my results.

Does anybody know where to get the damn current MSDSs for "Cutex" brand non-acetone nail polish remover? I searched high and low, and never found anything but the acetone based one and some really old ones that don't correspond to the ingredients listed on the bottle.. I couldn't find an MSDS for the generic Kroger brand version either (which is methyl acetate based according to the bottle.) It's strange because normally I've found MSDSs for common consumer products are very easy to get. I suppose I'll find out the concentrations of the important stuff soon enough..

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[*] posted on 10-6-2011 at 05:45


I had to get MSDS on everything at our office. The products that were generic store brands I had to call the number on the bottle to get them to fax the MSDS. Publix in particular doesn't have them online. They will gladly send them to you if you tell them the sku # (the number below the bar code).





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rrkss
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[*] posted on 12-6-2011 at 14:41


I've always shaken my impure EtOAc with a saturated CaCl2 solution and distilled after seperation giving me a good clean product pretty much free from EtOH. I 1 mL of H2O for every gram of CaCl2 I use and it has always worked well for me.
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[*] posted on 16-6-2011 at 00:12


I got it backwards in my last post, the Cutex stuff has methyl acetate and the kroger product is ethyl acetate. The kroger stuff also has a bunch of ethanol in it so it makes it a real pain in the ass to purify. Cutex gives a nice clean 95% AcOMe 5%H2O azeotrope which is easily dried with MgSO4 or CaCl2. Unfortunately Cutex is only 30-40% AcOMe.. Comes to about 30-40$/liter of AcOMe. Not too bad I guess.. Also if you wanted it you get a good 250-350ml of monobutyl diethylene glycol from it, but the purification of that would probably be tougher. I wonder how suspicious people would get seeing someone buying 10 or 20 bottles of nail polish remover?

Does anyone know of a good ethyl acetate source besides nail polish remover?
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