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Most overrated and underrated hazardous chemicals?
During my freshman chemistry class in 1961 H2S was on tap for qualitative analysis tests. I now fin ... |
28-8-2016 at 19:23
by: Magpie |
ethylbenzene by Wolff-Kishner (Huang-Minlon)
[b]Ethylbenzene by Wolff-Kishner reduction of acetophenone[/b]
Ethylbenzene was produced via a Wo ... |
27-8-2016 at 12:52
by: Magpie |
ethylbenzene by Wolff-Kishner (Huang-Minlon)
AvB,
There will be a full report in a day or two.  |
26-8-2016 at 17:53
by: Magpie |
ethylbenzene by Wolff-Kishner (Huang-Minlon)
AvB you are right, of course. But I decided to just follow the procedure as I had the time, and the ... |
25-8-2016 at 20:22
by: Magpie |
ethylbenzene by Wolff-Kishner (Huang-Minlon)
So I think what you are saying is that for ethylbenzene I don't need to do the 3hr reflux unless I w ... |
24-8-2016 at 18:21
by: Magpie |
ethylbenzene by Wolff-Kishner (Huang-Minlon)
[rquote=458754&tid=68467&author=AvBaeyer]Magpie,
I do not think that the additional reflux ... |
24-8-2016 at 17:42
by: Magpie |
ethylbenzene by Wolff-Kishner (Huang-Minlon)
I intend to do this preparation shortly but am perplexed by the procedure in Vogel's 3rd ed, p. 516. ... |
24-8-2016 at 13:25
by: Magpie |
preparation of hydrazine hydrate
[rquote=458517&tid=68382&author=Fleaker]if you put some 35% hydrate on a paper towel and lea ... |
23-8-2016 at 08:14
by: Magpie |
preparation of hydrazine hydrate
[rquote=458463&tid=68382&author=S.C. Wack]What temperature did the mantle reach? Beyond the ... |
21-8-2016 at 19:44
by: Magpie |
preparation of hydrazine hydrate
DJF90 I don't know about a copper mirror protecting glass. That might be an interesting experiment ... |
21-8-2016 at 18:11
by: Magpie |
preparation of hydrazine hydrate
Following Vogel’s procedure (ref 1) I have prepared nominal 90-95% hydrazine hydrate at a 2/3 scal ... |
21-8-2016 at 13:20
by: Magpie |
Urushiol
Louis and Mary Fieser in their textbook [u]Introduction to Organic Chemistry[/u] (1957) have a secti ... |
20-8-2016 at 18:08
by: Magpie |
Measuring/ controlling temperature of a reaction
The heat transfer with a mantle would not be as efficient so a higher temperature would seem to appl ... |
19-8-2016 at 20:57
by: Magpie |
Some Fume Hood Questions
Please see the 3rd sticky down in the Reagents & Apparatus sub-forum.
[Edited on 18-8-2016 by M ... |
18-8-2016 at 12:37
by: Magpie |
Benzoin and related Acyloin via thiamine
Very nice writeup! Nice to see someone doing some research. I know this is a lot of work.  |
16-8-2016 at 15:28
by: Magpie |
Grignard questions
Dry everything including your glassware (oven dry or flame dry). You don't need to have an inert at ... |
16-8-2016 at 15:26
by: Magpie |
Measuring/ controlling temperature of a reaction
As a rule of thumb for heating the bath should be ~20°C hotter than the liquid being heated. |
15-8-2016 at 15:17
by: Magpie |
stirrer shaft seals
Biphasic (liquid-solid, liquid-liquid, etc) reactant mixes can be difficult to stir well. Without g ... |
15-8-2016 at 09:57
by: Magpie |
Ethyl acetoacetate synthesis: some questions !
The only thing I can contribute is my experience making ethyl acetoacetate 9yrs ago. I used the pro ... |
14-8-2016 at 17:39
by: Magpie |
Very basic formula questons
I actually never used the Pauling book in school but picked it up much later at a used book sale. I ... |
14-8-2016 at 12:23
by: Magpie |
Very basic formula questons
Nitrogen has a valence of +5 in HNO3. Valences are, in general, not fixed to one number but can var ... |
14-8-2016 at 08:07
by: Magpie |
Overlooked Ferrates
How do you reconstitute bleach? |
13-8-2016 at 16:10
by: Magpie |
Overlooked Ferrates
[rquote=457662&tid=62978&author=byko3y]In my region bleach concentration is usually 3-5% bec ... |
13-8-2016 at 16:09
by: Magpie |
Friedel-Crafts acylation
I recently prepared acetophenone using 2 different procedures, ie, Brewster and Vogel (1.5X).
The ... |
10-8-2016 at 18:48
by: Magpie |
Anhydrous AlCl3 handling and storage
[rquote=457428&tid=19772&author=mr.crow]Why is AlCl3 so hard to store? Is it just the HCl ga ... |
10-8-2016 at 13:54
by: Magpie |
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