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Screens for Aluminum Powder
Some experiment in producing separation machinery should test a design that is actually used. Indust ...
24-8-2020 at 13:12
by: S.C. Wack
CBD THC extraction
Where extraction is allowed, it's still regulated. I don't know anywhere that pentane extraction is ...
24-8-2020 at 12:42
by: S.C. Wack
Screens for Aluminum Powder
I'm not sure how producers sift 325 mesh Al or even if they do, but if they do it isn't with big ver ...
23-8-2020 at 10:51
by: S.C. Wack
Synthesis, storage of sodium ethoxide
[rquote=643507&tid=156007&author=unionised]"And you can reduce NaOH with it in seconds"
Wit ...
22-8-2020 at 15:56
by: S.C. Wack
Chloroform from calcium hypochlorite
[rquote=643540&tid=156064&author=JJay]The part about purification with sulfuric acid seems t ...
22-8-2020 at 15:42
by: S.C. Wack
Synthesis, storage of sodium ethoxide
[rquote=643482&tid=156007&author=unionised]The thing is that I can buy magnesium more or les ...
21-8-2020 at 21:37
by: S.C. Wack
Synthesis, storage of sodium ethoxide
[rquote=643473&tid=156007&author=unionised]Mg(OEt)2 + 2 NaOH --> 2 NaOEt + Mg(OH)2[/rquo ...
21-8-2020 at 12:53
by: S.C. Wack
The Short Questions Thread (4)
The only time anyone does it (edit: should do it) cold is when they are trying to do it without glas ...
20-8-2020 at 13:58
by: S.C. Wack
Synthesis, storage of sodium ethoxide
It's mentioned if not attached in the relevant thread, the long kind of thread where posts are best ...
20-8-2020 at 13:46
by: S.C. Wack
Synthesis, storage of sodium ethoxide
Alkali won't play nice with acetone and likely the sieves as well. It's been said for over 15 years ...
19-8-2020 at 17:47
by: S.C. Wack
Vacuum pump connections
[rquote=643326&tid=156053&author=monolithic]You would also need the clamp that fits around b ...
18-8-2020 at 17:25
by: S.C. Wack
Diethyl Ether - Solution did not Turn Black - SEP Funnel no Separation?
When distilling ether, the condenser and receiver can't be too cold. One is supposed to add water (o ...
13-8-2020 at 14:55
by: S.C. Wack
Temperature Difference between Hotplate>Heating Block> Flask
Putting sand in the block, and not heating to 260C at all, much less cooling with a blast of air, ma ...
13-8-2020 at 14:37
by: S.C. Wack
Preparation of Mononitrotoluenes (o-, p-)
[rquote=639773&tid=29111&author=sulfuric acid is the king]If we use freezing method, why do ...
11-8-2020 at 19:37
by: S.C. Wack
Heavy wall glass
If it doesn't weaken the glass (presumably it does) it says something about the quality. You wouldn' ...
2-8-2020 at 10:42
by: S.C. Wack
Can common soda glass bottles be reshaped?
They seemed to be normal bottles reheated enough in the neck to pull quite a ways.

I want to say ...
1-8-2020 at 18:09
by: S.C. Wack
Can common soda glass bottles be reshaped?
In the late 70's-early 80's I saw Coke bottles with stretched out necks sold as curios, nicely done ...
1-8-2020 at 14:30
by: S.C. Wack
Questions about the Hofmann Rearrangement.
This is why one looks up references; predictably the word methyl doesn't appear in it. The book is i ...
29-7-2020 at 16:08
by: S.C. Wack
Dimethyl oxalate synthesis problems
OS also mentions hydrogen chloride, and this is in Brewster et al.'s Unitized Experiments, where HCl ...
19-7-2020 at 15:10
by: S.C. Wack
Dimethyl oxalate synthesis problems
[rquote=640983&tid=155810&author=S.C. Wack]The esters are made with distillation and without ...
18-7-2020 at 06:42
by: S.C. Wack
Dimethyl oxalate synthesis problems
The esters are made with distillation and without other acids. The simplest explanation for acidic n ...
17-7-2020 at 13:51
by: S.C. Wack
High temperature pipe wrapping that is non conductive (electrically)
Ceramic fiber paper
17-7-2020 at 13:38
by: S.C. Wack
Vacuum glass implosion?
It's well known that the thicker the glass the more thermal stress. If one has a heat source at say ...
16-7-2020 at 14:58
by: S.C. Wack
Vacuum glass implosion?
"Thick walled glassware, such as jars, bottles, cylinders and filter flasks, should never be heated ...
15-7-2020 at 15:25
by: S.C. Wack
Extracting Ephedrine from Ma hung tea
[rquote=639898&tid=155652&author=karlosĀ³]Making N-methylalanine from alanine is far from be ...
14-7-2020 at 20:14
by: S.C. Wack
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