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Salting out ethanol and distillation
[rquote=545397&tid=61746&author=Mr. Rogers]What's wrong with using dry CuSO4?[/rquote]

I ...
21-10-2018 at 12:26
by: nimgoldman
Preparation of nitroethane
[rquote=545084&tid=40137&author=VSEPR_VOID]It seems like the dimethyl sulfate or sodium ethy ...
20-10-2018 at 14:18
by: nimgoldman
Safe disposal of wastes
[rquote=545230&tid=98885&author=Ubya]you mentioned the problem with liquid or solid waste li ...
20-10-2018 at 14:10
by: nimgoldman
Production of pharmaceutical grade (USP, EP, BP, JP) compounds
The purification process very well depends on the type of compound and the impurities expected.

I ...
20-10-2018 at 14:02
by: nimgoldman
Salting out ethanol and distillation
I tried to reproduce the experiment but I got nowhere near the results published here.

I took 200 ...
19-10-2018 at 19:40
by: nimgoldman
Separating DMF from water
[rquote=544584&tid=98207&author=Panache]If you have access to decent vac pump try pulling a ...
18-10-2018 at 13:06
by: nimgoldman
latest glassware purchase
These distillation adapters so that I can attach more efficient downward-facing condenser. I need th ...
17-10-2018 at 12:01
by: nimgoldman
Amateur Chemistry now vs several decades into the Future
I think the near future will give rise to more decentralized model of resource exchange, it already ...
17-10-2018 at 11:57
by: nimgoldman
Pyridine from Pyridine hydrochloride
[rquote=544506&tid=96433&author=Tsjerk]At least tell us what you did [/rquote]

It's in th ...
17-10-2018 at 11:47
by: nimgoldman
Any secrets to keeping a frit from getting clogged?
I use Celite, even thin layer usually prevents clogging in my applications.

For cleanup, I use su ...
17-10-2018 at 04:58
by: nimgoldman
Separating DMF from water
Based on Armarego & Chai: "Purification of Laboratory Chemicals, 7nd Edition", large amounts of ...
17-10-2018 at 02:41
by: nimgoldman
Pyridine from Pyridine hydrochloride
Just reporting the extraction was successful with a good yield.

Next time I have to be more scien ...
16-10-2018 at 18:10
by: nimgoldman
Separating DMF from water
[rquote=544258&tid=98207&author=clearly_not_atara][quote]I haven't found any info on salting ...
16-10-2018 at 16:09
by: nimgoldman
Preparation of nitroethane
Extracting the product with diethyl ether does not work very well as ether is miscible with DMF.

...
16-10-2018 at 15:31
by: nimgoldman
Separating DMF from water
I transferred the remaining impure DMF to a 1L flask for further (vacuum) distillation. It became cl ...
16-10-2018 at 14:53
by: nimgoldman
Separating DMF from water
As for the possible nitrosamine contamination, I can treat the water with potassium permanganate in ...
16-10-2018 at 13:20
by: nimgoldman
Separating DMF from water
I don't know whether I can salt it out. This is why I am asking. I haven't found any info on salting ...
16-10-2018 at 13:08
by: nimgoldman
Separating DMF from water
One idea could be using packed column (instead of plain Vigreux) or salting out DMF somehow. I haven ...
16-10-2018 at 12:53
by: nimgoldman
Separating DMF from water
After my last synthesis (nitroethane from NaNO2 + EtBr in DMF), I have ended up with DMF and water m ...
16-10-2018 at 12:39
by: nimgoldman
Reaction skill tree
Calcium acetate from eggshels and vinegar.

You can use it to make acetone, tofu and the flammable ...
12-10-2018 at 21:38
by: nimgoldman
Can Someone Explain This? -
Also when you make larger amount of solution, say 1L or 2L, then it is more practical to use volumet ...
12-10-2018 at 21:29
by: nimgoldman
Everyday Chemistry (provisional)
My first alkyl halide - bromoethane, fractionally distilled between 38.4-38.7 °C
12-10-2018 at 12:02
by: nimgoldman
Separating L-tryptophan/tryptamine from taurine
Thanks.

So far I managed to crash out most of the tryptophan by cycling the beaker between fridge ...
11-10-2018 at 10:49
by: nimgoldman
Separating L-tryptophan/tryptamine from taurine
[rquote=541912&tid=96580&author=Elrik]Distilled water?
L-Tryptophan has a nice steep solubi ...
10-10-2018 at 06:57
by: nimgoldman
Separating L-tryptophan/tryptamine from taurine
I am attempting L-tryptophan decarboxylation to tryptamine. Unfortunately, my source of tryptophan c ...
8-10-2018 at 09:22
by: nimgoldman
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