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Soxhlet
I am using Soxhlet apparatus quite often for making plant extracts.

My 250 ml Soxhlet body became ...
8-8-2018 at 22:20
by: nimgoldman
Understanding a paper on eugenol extraction from clove oil
Thanks for the results of analyses. The composition of clove oil varies widely depending on source. ...
2-8-2018 at 20:02
by: nimgoldman
Understanding a paper on eugenol extraction from clove oil
[quote]I didn't see a step where the phenolate is washed with solvent...it could be included...when ...
28-7-2018 at 06:40
by: nimgoldman
Understanding a paper on eugenol extraction from clove oil
The freeze separation didn't work well, at least not down to -12 °C. There was only tiny lining of ...
26-7-2018 at 20:29
by: nimgoldman
Understanding a paper on eugenol extraction from clove oil
[rquote=525441&tid=84742&author=Tsjerk]Can you try to freeze your eugenol in a freezer? It s ...
24-7-2018 at 12:46
by: nimgoldman
Understanding a paper on eugenol extraction from clove oil
[rquote=525409&tid=84742&author=Tsjerk]Please redo your molar calculations, you are off by a ...
23-7-2018 at 11:42
by: nimgoldman
Understanding a paper on eugenol extraction from clove oil
Okay so this time I have added 26 grams of NaOH (molar equivalent to 100 ml of pure eugenol rounded ...
23-7-2018 at 10:34
by: nimgoldman
Understanding a paper on eugenol extraction from clove oil
[rquote=525311&tid=84742&author=Boffis]5M hydrochloric acid is about 18% w/v.[/rquote]

I ...
23-7-2018 at 06:49
by: nimgoldman
Understanding a paper on eugenol extraction from clove oil
Okay so here is my somewhat successful experiment with eugenol isolation from clove oil.

First I ...
22-7-2018 at 20:02
by: nimgoldman
Understanding a paper on eugenol extraction from clove oil
So today I've tried to strip DCM off the eugenol extract (attached image of my apparatus - a simple ...
16-7-2018 at 19:29
by: nimgoldman
Understanding a paper on eugenol extraction from clove oil
Okay after 30 minutes of stirring, a brown oily precipitate settled on the bottom which I believe is ...
14-7-2018 at 18:30
by: nimgoldman
Understanding a paper on eugenol extraction from clove oil
[rquote=523891&tid=84742&author=Boffis]Are you sure that it says 0.8M (normal) NaOH and not ...
14-7-2018 at 16:12
by: nimgoldman
Understanding a paper on eugenol extraction from clove oil
I found the following 2015 article about isolation of eugenol from clove oil:

[url=https://www.go ...
13-7-2018 at 04:24
by: nimgoldman
Preparing a solution with exact concentration
Ah ha. Thanks.

Yes I use volumetric glassware very often but most people have it rounded to some ...
10-7-2018 at 05:09
by: nimgoldman
Preparing a solution with exact concentration
I have read several articles about making and diluting solutions, but one thing was never answered:
...
8-7-2018 at 12:02
by: nimgoldman
Ordering PTFE stir bars - which are best sizes/shapes?
For beakers, I like to use the "bars" which are round or triangular (make stronger vortex and more e ...
1-7-2018 at 12:03
by: nimgoldman
Neutralizing HBr reaction mixture
[rquote=522958&tid=84444&author=JJay]Why not neutralize with hydroxide first and then add so ...
29-6-2018 at 11:39
by: nimgoldman
Neutralizing HBr reaction mixture
I have attempted synthesis of hydrobromic acid by distilling aqueous mixture of sodium bromide and s ...
29-6-2018 at 09:58
by: nimgoldman
Confusion about Aluminium Powder Safety
Thanks.

I thought it's not such a big deal as from the videos of people experimenting with it - i ...
19-6-2018 at 14:16
by: nimgoldman
Confusion about Aluminium Powder Safety
I wanted to add Al to my collection of metals.

Unfortunately, I realized I obtained an extremely ...
19-6-2018 at 09:48
by: nimgoldman
Separate Isopropyl Alcohol and Xylene
[rquote=521445&tid=83916&author=kulep]If you aren't sure about how accurate your means of me ...
13-6-2018 at 13:33
by: nimgoldman
Separate Isopropyl Alcohol and Xylene
[rquote=521425&tid=83916&author=walruslover69]Is the solution a mixture of xylene and 91% IP ...
12-6-2018 at 06:51
by: nimgoldman
Are there chinese hotplates & heating mantles as good as others but significantly cheaper?
The main issue I have with the chinese hotplate/stirrer (FAITHFUL SH-3) is the regulation of stirrin ...
11-6-2018 at 15:57
by: nimgoldman
Separate Isopropyl Alcohol and Xylene
> I wouldn't think it's necessary to use anywhere near 10:1 water:isopropanol.

This was just a ...
11-6-2018 at 15:49
by: nimgoldman
Separate Isopropyl Alcohol and Xylene
I have less than a liter of it, so it's not a big issue. But I will often use it with xylene so regu ...
11-6-2018 at 11:42
by: nimgoldman
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