Sciencemadness Discussion Board
Not logged in [Login ]
Go To Bottom

Search
[Next Page]
Scottish MRE with radioactive heater: Hoax?
He's taking the piss.
13-7-2020 at 02:33
by: DavidJR
Thiamine catalyzed benzoin condensation failure
[rquote=640418&tid=155748&author=Tsjerk]Benzoic acid is not soluble in benzaldehyde, so it w ...
11-7-2020 at 19:25
by: DavidJR
successful method for purifying anthranilic acid(quick report)
I'm surprised that works so well. Useful to know.
7-7-2020 at 14:19
by: DavidJR
Amidation of cinnamic acid using CDMT
[rquote=640005&tid=155706&author=DrDevice]I haven't tried a "shaking the shit out of it" app ...
6-7-2020 at 09:36
by: DavidJR
Amidation of cinnamic acid using CDMT
Interesting that the methy/ethyl esters failed. Every time I have used that method for preparing ami ...
6-7-2020 at 04:15
by: DavidJR
Bisulfite adduct and reagents?
[rquote=639983&tid=155732&author=woelen]
S2O3(2-) : thiosulfate, a fairly strong reductor, ...
6-7-2020 at 04:05
by: DavidJR
does autoignition temperature even matter when refluxing a liquid?,
Usually not a concern. The temperature of the flask contents is not going to be anywhere near as hot ...
6-7-2020 at 04:00
by: DavidJR
Converting Amine Sulfate into Amine Hydrochloride ?
Another option would be using barium chloride solution.
5-7-2020 at 02:29
by: DavidJR
Blowing 100k on science equipment
Maybe an FT-IR spectrometer or raman spec? Minimal maintenance requirements for those.
3-7-2020 at 01:07
by: DavidJR
Definitive POCl3 prep
See Lerner, Leonid (2011). Small-Scale Synthesis of Laboratory Reagents with Reaction Modeling. Boca ...
2-7-2020 at 18:54
by: DavidJR
Peroxide formation risk?
I doubt it.
1-7-2020 at 02:24
by: DavidJR
Clomethiazole by Vitamine b1 cleavage
The referenced reports:
https://sci-hub.tw/10.1021/ja01306a044 and https://pubs.acs.org/doi/10.1021 ...
28-6-2020 at 16:40
by: DavidJR
Chinese rotavaps?
[rquote=638901&tid=155584&author=Mateo_swe]
How come you cant rotate the flask faster, is i ...
28-6-2020 at 05:59
by: DavidJR
Cubane; Dimethyl Cubane-1,4-dicarboxylate synthesis
[rquote=631117&tid=154884&author=Tsjerk]
I was planning on doing that; but when I added the ...
25-6-2020 at 22:35
by: DavidJR
On making paraformaldehyde from formalin
[rquote=639142&tid=155650&author=mackolol]
I fillled flask with my freshly bought formalin ...
25-6-2020 at 22:14
by: DavidJR
Ammonium persulphate + sulphuric acid as a sub for piranha solution
[rquote=639040&tid=155641&author=Keras]Do you use it cold or hot?[/rquote]

I don't heat i ...
24-6-2020 at 00:40
by: DavidJR
Ammonium persulphate + sulphuric acid as a sub for piranha solution
I don't really know, I've never had 30% hydrogen peroxide to make piranha with. But what I do know i ...
23-6-2020 at 04:58
by: DavidJR
Mysterious orange-brown residue inside used glassware
DCM works well for removing old nasty grease.
22-6-2020 at 16:01
by: DavidJR
Ammonium persulphate + sulphuric acid as a sub for piranha solution
12% hydrogen peroxide still works.
22-6-2020 at 04:47
by: DavidJR
Disappointing results with 3A molecular sieves
My sieves are nowhere near that dusty.
21-6-2020 at 17:39
by: DavidJR
Buchi Screw Wheel 00565 needed!
[rquote=638895&tid=18283&author=spankyetal]
Repairs can be kept below $25.00 using a clay ...
21-6-2020 at 11:29
by: DavidJR
Chinese rotavaps?
[rquote=638621&tid=155584&author=SWIM]
@DavidJR: Nice.

I wasn't expecting it to be so ne ...
18-6-2020 at 13:41
by: DavidJR
Chinese rotavaps?
In addition to the usual use of removing solvent from solutions, I've also had great success using [ ...
17-6-2020 at 17:57
by: DavidJR
Preparing a chromatography column
It does depend on how good a separation you get though. If well resolved you might be able to exceed ...
17-6-2020 at 03:30
by: DavidJR
Preparing a chromatography column
How fine is your silica gel? you shouldn't need to worry about it passing through the frit if you're ...
17-6-2020 at 02:33
by: DavidJR
[Next Page]

  Go To Top