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Seperation of AcOH and Ac2O
Unfortunately I have no Ac2O on hand presently and my lab is still down after shifting houses a few ... |
24-3-2007 at 00:26
by: Sauron |
keten lamp
@Hector, please take note. Try avoiding any contact between the acetyl chloride and the acetic anhyd ... |
24-3-2007 at 00:22
by: Sauron |
This is a new one....
Some of those common household chemicals of course combined with other common household chemicals ar ... |
24-3-2007 at 00:10
by: Sauron |
keten lamp
@Hector's process is to add AcCl to NaOAc anhydr. Perhaps the (stainless?) steel vessels are being a ... |
23-3-2007 at 23:13
by: Sauron |
keten lamp
I think you will find that Merck sells lots of chemicals in bulk just as Aldrich does, Acros does, E ... |
23-3-2007 at 22:50
by: Sauron |
Seperation of AcOH and Ac2O
Those are possinations. I'm sure there are x-number of solvents that will do this job. Finding them ... |
23-3-2007 at 21:17
by: Sauron |
keten lamp
Thanks, @leu. Unfortunately this while interesting is not helpful. @Hector has all but totally disca ... |
23-3-2007 at 21:08
by: Sauron |
Acetic anhydride preparation
I have been using www.freepatentsonline for several years and while I think their search engine suck ... |
23-3-2007 at 20:44
by: Sauron |
Seperation of AcOH and Ac2O
Thanks for clarification.
CHCl3 and CCl4 are miscible in all proportions with both AcOH and Ac2O ... |
23-3-2007 at 20:26
by: Sauron |
Seperation of AcOH and Ac2O
Thanks @ n_i. If I read that correctly then CS2 dissolves Ac2O up to 35mol% @25 C. Since CS2 is not ... |
23-3-2007 at 20:09
by: Sauron |
Seperation of AcOH and Ac2O
Let me toss this out to the forum in general.
Suppose we have a relatively large amount of AcOH 9 ... |
23-3-2007 at 13:42
by: Sauron |
Imported Chinese grain product linked to Pet Poisonings
This is far from unique.
Last year in USA tere was a huge recall of pet food after a large number ... |
23-3-2007 at 12:45
by: Sauron |
keten lamp
I am first to concede I am not a chemical engineer. On the other hand, making 20 L or 50 L a day is ... |
23-3-2007 at 12:06
by: Sauron |
Acetic anhydride preparation
Thee and me. However, you also see I'm sure that a lab bench procedure that might work, is not the s ... |
23-3-2007 at 11:21
by: Sauron |
keten lamp
@n_i, if you look carefully I mentioned ethylidene diacetate -> acetaldehyde + acetic anhydride b ... |
23-3-2007 at 10:51
by: Sauron |
keten lamp
I suspect your supplier is making acetyl chloride by POCl3 or PCl3 and not purifying so still contai ... |
23-3-2007 at 06:33
by: Sauron |
Acetic anhydride preparation
@S.C., those two US patent number you cited appear to be wrong, two different patent sites rejected ... |
23-3-2007 at 05:33
by: Sauron |
keten lamp
@hector 2000 already explained that in his country cellulose acetate is $30/Kg, and he is making his ... |
23-3-2007 at 05:29
by: Sauron |
keten lamp
Of course acetic anhydride is highly restricted here for same stupid reason. But I am sure they make ... |
23-3-2007 at 04:23
by: Sauron |
Acetic anhydride preparation
Kirk-Ohmer mentioned two other "prospective" routes but these seemed so far fetched that I have paid ... |
23-3-2007 at 03:02
by: Sauron |
keten lamp
Acetaldehyde is far far LESS irritating than acetic anhydride and even less than ketene which is dea ... |
23-3-2007 at 02:48
by: Sauron |
keten lamp
After the reaction, you will have a mixture of acetaldehyde, acetic anhydride, unreacted vinyl aceta ... |
23-3-2007 at 01:29
by: Sauron |
Sulfur
I am perfectly calm. Perhaps you are too touchy. |
22-3-2007 at 22:36
by: Sauron |
Sulfur
Ah. So this is a wild goose chase. You aren't interested in ultrapure sulfur but in getting the crap ... |
22-3-2007 at 14:47
by: Sauron |
Acetic anhydride preparation
According to Ullmann's (2003) CD edition, vinyl acetate (cheap solvent) can be reacted over Pd(II) c ... |
22-3-2007 at 04:31
by: Sauron |
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