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Drying acetone

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Author	Topic: Drying acetone
iudexk Hive Bee	posted 01-04-2000 08:08 AM When I add MgSO4, it goes cloudy and stays that way even after filtration. MgSO4 from the same bag was used to dry other thikngs successfully, so what's the problem?
Methyl Man Hive Bee	posted 01-04-2000 01:32 PM hey, I hear ya, Mr. Agidk finds the same thing happens, especially with acetone, but it's due to superfine silt of MgSO4 powder and does not indicate that it did not succeed in drying your solvent (assuming you used enough). The only way not to get the silt is to use only chunks of drying agent (no powder allowed). For a while he sweated filtering it until he realized that when recrystallizing, he got crystals that were so big anyway that they were effortless to separate from any MgSO4 silt that made it into the flask used to recrystallize. ------------------ O+O+O+O+O+O+O+O+O+O+O+O+O "There's a methyl to my madness"
hellman Hive Bee	posted 01-04-2000 10:06 PM To dry acetone, you can use my very own method, by forming the addition product with NaI, to form beautiful little crystals, filter them off then distill to get --100%. It's on rhodium's page for the exact method. hellman
LaBTop PimpBee	posted 01-04-2000 11:49 PM Another one, fast, clean, easy: use pre-dried silicagel beads, 3-5 mm. Throw 10-20 w/w % silicagel in, wait 10 minutes ,while swirling the closed container by hand, and decant the dry acetone in a new dry container with a perfect closing lid. The silicagel can be used again and again for any drying job imaginable.(flowers will dry fine too.) LT/ ------------------ WISDOMwillWIN
iudexk Hive Bee	posted 01-05-2000 04:46 AM Thankyou, all. I've done it now Hellman - Am I correct in assuming that your NaI addition product works w/P2P as well?
hellman Hive Bee	posted 01-05-2000 07:24 PM iudexk, Yes my little chicken scratch friend, I would strongly assume that it would enjoy a close relationship with p2p, an addition product that is,. Although this method is pretty exotic, it has it's place if you have heavily impure ketones,. Personally, I would just use the silica beads, then the mgso4, then mine in a preferential kinda way. hellman Good to see you Labtop!
iudexk Hive Bee	posted 01-05-2000 11:47 PM Yeah, I used silica. When making your NaI complex, should an excess of NaI bee used or an excess of ketone? i.e. will uncombined NaI ppt. on cooling?
hellman Hive Bee	posted 01-07-2000 08:29 PM I-man Always use an excess of the naI, just to be sure,. Look the truth is, this IS still theoretical, not saying that vogels is unjust, but it just hasn't been real world tested, by any bees, that is.. The best way would be to play around with acetone and NaI first, to get the hang of it,. Then gradually degrade the quality/purity of the acetone to see for yourself just what happens,. It would be an intersting post,. We look forward to anything of value,. Best of the best hellman
iudexk Hive Bee	posted 01-08-2000 06:54 AM hmmmmm........ When making NaI by your proposed synth, it seems to decomposed to I2?????? Also, wouldnt the Na2CO3 bee carried thru the filter?
Sploofer Hive Bee	posted 01-08-2000 06:17 PM Man o man-----Ya dehydrate the solvent by passing it through something like silica gelly balls they become when saturated with water besides of wich ya distll to dehydrate such and such solvent of most of the water as well as adding a dehydrant that is stable and it holds water problem being if ya dont desicate with such catalyst before will or durring refluxing through the stuff ya will get an azetroph of stuff thats why essentially =ya rarelly ever seen a 100 percent anhydrous solvent besides of which it would suck in water as soon as ya opened it..... So use desicant after distilation and to rid the problem of azetroph form..... Indicator is added these are a variety of them out there as ell as fuel dye mandated by the pigs so they can tells who whats when need be where from etc..... Such also gasses are use to dehydrate the resulting azetrophs when cost effective however more often carbon is pummped into such as waste and they dont know what else to do with it all it make polution humm maybe we can hid some in that generic lamp fuel or furnace fuell we got to keep that gas grade auto garde up ya know
Sploofer Hive Bee	posted 01-08-2000 06:20 PM oh something like oil is added to help keep solvent dry otherwise it woul suck back water like a fountain ever had anhydrous before???
hellman Hive Bee	posted 01-08-2000 08:38 PM I-man, I'll check up on you last question,. It came straight from some oooold chem book, I'll find it and extrapolate,. regards hellman
kneegee Hive Bee	posted 01-19-2000 06:30 PM Do any bees know if KI will form an addition product with acetone or butanone, or must the KI be converted to NaI?

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