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Picric acid sensitivity
I wonder though why this policy is in place - they also deliver dinnitrophenylhydrazine wet as a com ... |
30-12-2009 at 11:26
by: chemoleo |
Sugars affecting protein folding?
There are rather rare occurrences, however, when the aldehyde/ketone group reacts with other groups ... |
15-12-2009 at 17:40
by: chemoleo |
Question on chloroacetyl chloride reactivity with hydroxyls
Chloroacetic acid ClCH2COOH react with primary and secondary hydroxyls in aqueous solution.
I was ... |
5-12-2009 at 17:46
by: chemoleo |
Mellitic acid
And how would one best reduce this to the cyclohexane version (hexacarboxycyclohexane)?
Birch redu ... |
22-11-2009 at 08:20
by: chemoleo |
Sterilization machine via electroon beam or?
Surely industrial alcohol (which is cheap) at 70%, a soak for an hour in a bucket, and put them to d ... |
14-11-2009 at 18:51
by: chemoleo |
The short questions thread (2)
Thanks - so water is the problem - just what I feared  Will report back if it can
be improved.
... |
5-11-2009 at 16:46
by: chemoleo |
The short questions thread (2)
[quote]Shaking the amine and benzaldehyde in ethanol with catalyst and hydrogen will give the second ... |
4-11-2009 at 18:48
by: chemoleo |
The short questions thread (2)
For now complete conversion to the imine is what is desired. Reduction afterwards maybe useful (Na c ... |
4-11-2009 at 18:14
by: chemoleo |
The short questions thread (2)
What are the best reaction conditions to achieve full condensation of a primary amine and benzaldehy ... |
4-11-2009 at 15:21
by: chemoleo |
a-halogenation of carboxylic acids...
That sounds like a very nice patent if it really works - quite amazing!
One would start with alani ... |
27-10-2009 at 15:40
by: chemoleo |
Phenacyl chloride
Well I know where you guys are coming from - but the Chem Berichte article is unequivocal on that (i ... |
25-10-2009 at 15:17
by: chemoleo |
Nice demo of induction current
Very nice, very simple!
Reminds me of asking my physics teacher a long time ago: Where/how is the ... |
22-10-2009 at 15:05
by: chemoleo |
Recommended Microscope Stains?
On the matter of papain - looks like a neutral pH or slightly acidic is beneficial - see this http:/ ... |
22-10-2009 at 14:27
by: chemoleo |
Phenacyl chloride
In the case of the bromine derivative, you can also directly brominate acetophenone - although you w ... |
22-10-2009 at 14:17
by: chemoleo |
Recommended Microscope Stains?
Qton - when I looked at mammalian cells last, bacteria were about 1/20th the size of the mammalian ... |
20-10-2009 at 15:20
by: chemoleo |
Recommended Microscope Stains?
Very nice! The first one - why do you think these are bacteria? It could equially be cell debris (me ... |
18-10-2009 at 06:41
by: chemoleo |
Si + NaOH
Reminds me a bit of the reaction with Mg and NaOH - which practically is a flash powder when heated ... |
12-10-2009 at 15:07
by: chemoleo |
Seperation of Lithium from ground salts
LiCl can be electrolysed in pyridine.
How about trying to extract it from a concentrate of LiCl, u ... |
22-9-2009 at 15:38
by: chemoleo |
Sodium!
Cold air on Na condensation? How cold is cold?
Would be interesting to hear more! |
22-9-2009 at 13:51
by: chemoleo |
Recommended Microscope Stains?
The most important problem is when you open the bottles, they often release a puff of dye dust - and ... |
19-9-2009 at 16:15
by: chemoleo |
Quick test for presence of oxime and hydrazone?
That's interesting - seems it's not such an uncommon accident! And it doesn't say anything about inh ... |
17-9-2009 at 14:14
by: chemoleo |
Quick test for presence of oxime and hydrazone?
Hmm, what conditions would you recommend to ensure reduction with NaBH3CN?
I tried aq conditions ( ... |
16-9-2009 at 16:28
by: chemoleo |
Quick test for presence of oxime and hydrazone?
Yah, except DNPH is not good enough because concentrations aren't in the millimolar range, but much ... |
16-9-2009 at 02:55
by: chemoleo |
Quick test for presence of oxime and hydrazone?
The compounds in question are
R-O-N=CR1R2 and
R-NH-N=CR1R2
Is there a quick way to determ ... |
15-9-2009 at 15:31
by: chemoleo |
Extra Large Capacitors For Power Storage
[quote]
You can determine the capacitance with 12 VDC quite easily. Short the capacitor for some ... |
14-9-2009 at 14:41
by: chemoleo |
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