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Have organic molecule base in Ethyl acetate, precipitate with tartaric acid in methanol?
I'm talking about alkaloid bases. |
7-10-2018 at 11:20
by: beerwiz |
Have organic molecule base in Ethyl acetate, precipitate with tartaric acid in methanol?
[rquote=541490&tid=96278&author=Tsjerk]Depends on how much methanol you use [/rquote]
Sho ... |
7-10-2018 at 06:25
by: beerwiz |
Have organic molecule base in Ethyl acetate, precipitate with tartaric acid in methanol?
I have the basic organic molecule in ethyl acetate, someone suggested I use tartaric acid dissolved ... |
7-10-2018 at 05:36
by: beerwiz |
My organic molecule is in the ethyl acetate, how to dry it before precipitating?
I've been using anhydrous MgSO4 and since the compound is basic it may have been precipitating out b ... |
6-10-2018 at 17:47
by: beerwiz |
My organic molecule is in the ethyl acetate, how to dry it before precipitating?
I extracted the organic layer with ethyl acetate, now I need to dry the ethyl acetate. But how do I ... |
30-9-2018 at 10:49
by: beerwiz |
Vac Distillation of Water keeps stalling? Too high vacuum?
It was 98% sulfuric acid, I know it's crazy but it's true, mistakes happen.
So my question is how ... |
21-9-2018 at 06:43
by: beerwiz |
Best locking mechanism for glass Flash Chromatography? Keck clips don't work.
The solution to this is to use keck clips + use chromatography glassware that has ears, and use mult ... |
20-9-2018 at 16:51
by: beerwiz |
Vac Distillation of Water keeps stalling? Too high vacuum?
When there's a leak there's the tell tale noise coming from the pump, it becomes louder, but when it ... |
20-9-2018 at 16:40
by: beerwiz |
Vac Distillation of Water keeps stalling? Too high vacuum?
I haven't put my finger over it but I can see a lot of oil vapor coming out so I assume it does buil ... |
20-9-2018 at 16:31
by: beerwiz |
How to deal with oil mist on vacuum pumps?
[rquote=537021&tid=93293&author=Sidmadra]First, change your oil to a heavier oil, like miner ... |
20-9-2018 at 16:19
by: beerwiz |
Vac Distillation of Water keeps stalling? Too high vacuum?
I'm using a 10 micron rotary vane pump 6CFM to vac distill water on a 2L rotavap.
At the start afte ... |
20-9-2018 at 16:11
by: beerwiz |
How to deal with oil mist on vacuum pumps?
How do you deal with the oil mist coming out from the exhaust port on vacuum pumps?
When I have t ... |
20-9-2018 at 15:14
by: beerwiz |
Best locking mechanism for glass Flash Chromatography? Keck clips don't work.
I ran my first glass flash column today and I secured (held it in place) the reservoir and the gas i ... |
4-8-2018 at 19:46
by: beerwiz |
Do this kind of pumps exist?
Then there's this type of vacuum/pressure pump that can pull vacuum (weak 150mmHg, good only for buc ... |
6-5-2018 at 00:41
by: beerwiz |
Do this kind of pumps exist?
So what you need is a pump that can:
1. Pull vacuum
2. Push air -- pressure
3. Recirculate wat ... |
6-5-2018 at 00:38
by: beerwiz |
Stationary for aqueous normal phase or reverse phase column chromatography
You can try activated alumina. |
4-5-2018 at 23:44
by: beerwiz |
Fume Hood for Urban Apartment
1. The most practical stealth venting solution seems to be a window vent kit like that for a portabl ... |
27-4-2018 at 19:15
by: beerwiz |
spirit lamp fuel
I've used homemade spirit lamps for years. Go to the liquor store and buy 95% vodka unflavored, work ... |
27-4-2018 at 09:59
by: beerwiz |
Fume Hood for Urban Apartment
Almost all chemical fume hoods are large and heavy and can't even fit through the door of an apartme ... |
27-4-2018 at 09:36
by: beerwiz |
anhydrous ethanol, etoh, anhydrous alchohol, calcium oxide, quicklime, methanol?
The best OTC way to dry ethanol or methanol is using tapioca pearls. They look like molecular sieves ... |
14-12-2016 at 16:14
by: beerwiz |
Rotary Evaporator vs Magnetic Stirrer for Distillations - which is superior?
I've tried doing simple distillations with a rotary evaporator and a magnetic stirrer, and to me it ... |
1-12-2016 at 14:43
by: beerwiz |
aspirator vacuum question
That adapter is no good! You need one that is 12V x 5A (amps). You can twist the wires together and ... |
29-11-2016 at 12:11
by: beerwiz |
aspirator vacuum question
[rquote=467533&tid=70996&author=Db33][rquote=467532&tid=70996&author=Chlorine]You ca ... |
27-11-2016 at 01:36
by: beerwiz |
Advice on which analytical instrument to buy: FTIR, NMR, GCMS, GS, MS, NIR, etc
I guess I can run a TLC plate to separate the compounds and run it on IR, FTIR, or NIR to identify e ... |
30-8-2016 at 19:34
by: beerwiz |
No More Ethyl Acetate
You can get it from beauty supply stores as Non-acetone nail polish remover by the gallon. It has so ... |
30-8-2016 at 19:22
by: beerwiz |
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