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Gas-phase apparatus construction
Thank you very much for posting thoses pictures! It's a pity it didn't work, but such details really ... |
21-9-2008 at 03:45
by: Klute |
PTFE or Glass Stopcocked titration burette?
Let's say that analytical chemistry is more of a "tool" for many, and not as passioanting as organic ... |
20-9-2008 at 17:40
by: Klute |
The short questions thread (1)
Solo, you might want to try acetone as a solvent, it will surely dissolve your ketone, and if 5-10% ... |
20-9-2008 at 16:11
by: Klute |
Common accidents in the lab and how to avoid them
After relating my experience to several well-experienced chemists, they all told me HNO3 and H2O2 is ... |
20-9-2008 at 14:09
by: Klute |
Common accidents in the lab and how to avoid them
What is the explosion hazard from AgNO3 and NH3? I don't remember hearing from this? We clean dark A ... |
20-9-2008 at 07:00
by: Klute |
Progress on Compressed Gases in Thailand
Those are really nice prices!
IME, MIG/TIG argon is perfectly suitable for most needs. the major ... |
20-9-2008 at 06:58
by: Klute |
PTFE or Glass Stopcocked titration burette?
What is class A and class B? The quality of the glass? A surface treatment? |
20-9-2008 at 06:53
by: Klute |
tetraaminecopper sulphate monohydrate??
The complex formation is an equilibrium. I fyou add only 0.1excess for example, you might no have al ... |
20-9-2008 at 06:51
by: Klute |
PTFE or Glass Stopcocked titration burette?
Amber burettes are mostly used for certain photo-sensitive reagents (AgNO3), etc and are not really ... |
19-9-2008 at 13:41
by: Klute |
Common accidents in the lab and how to avoid them
On the most frightening chemical experience was H2S intoxication, which related in a thread here...
... |
19-9-2008 at 03:18
by: Klute |
Synthesis of gamma-nonalactone (Coconut aroma)
I think you can substitute malonic aicd for diethyl malonate, although I'm not a 100% certain this m ... |
18-9-2008 at 14:04
by: Klute |
Synthesis of gamma-nonalactone (Coconut aroma)
Well, 1-halogenohexane could bve made from the alcohol, the grignard reagent prepared and reacted wi ... |
18-9-2008 at 11:58
by: Klute |
Common accidents in the lab and how to avoid them
Especially with a british accent!  |
18-9-2008 at 11:24
by: Klute |
Synthesis of gamma-nonalactone (Coconut aroma)
This is a very easy preparation of [url=http://www.thegoodscentscompany.com/data/rw1000531.html]gamm ... |
18-9-2008 at 11:17
by: Klute |
Ethyl centralite synthesis
This following article might be helpfull for anyone interested in preparing diphenylurea:
[b]A ra ... |
17-9-2008 at 14:05
by: Klute |
ester project
It's always better to fractionnate your extraction in 3 or more times!
As a rough rule, I usually ... |
16-9-2008 at 10:38
by: Klute |
Acetophenones from benzaldehydes?
Thank you very much S.C Wack, very helpfull! |
16-9-2008 at 10:15
by: Klute |
ester project
Use ether (or AcOEt), and saturate the aqueous with NaCl: the organic will become less dense, and th ... |
16-9-2008 at 02:13
by: Klute |
Reduction of carboxylic acid to alcohol!
Here is a fairly complete document on modifying borohydrides:
http://www.rohmhaas.com/assets/attach ... |
15-9-2008 at 21:36
by: Klute |
Acetophenones from benzaldehydes?
Well, acetophenone itself I don't really care, I'm aiming at the subtitued ones. So I could use p-hy ... |
15-9-2008 at 21:32
by: Klute |
Synthesis of oxiracetam
If you check for peroxides (starch/iodide paper) and treat them if present (bisulfite, FeSO4, etc), ... |
14-9-2008 at 22:02
by: Klute |
Acetophenones from benzaldehydes?
Thanks for the suggestions.
I'm not too found of pyrolysis reactions to be honest. I might give i ... |
14-9-2008 at 21:58
by: Klute |
DCM or Et2O?
Fair point. I checked the prices, it hardly above DCM.
Unfortuanly, the suppier where I get all m ... |
14-9-2008 at 05:09
by: Klute |
Synthesis of oxiracetam
Chances are chloroacetmaide is more acid than the pyyrolidinone, and would simply neutralize the ani ... |
14-9-2008 at 04:54
by: Klute |
Acetophenones from benzaldehydes?
I stumbled on an article on a-alkylcinnamic acids, were they prepare various derivatives. This gave ... |
13-9-2008 at 18:47
by: Klute |
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