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uv for tlc
Information on the web says to use a 254 nm uv lamp to visualize tlc spots. I've got a "black light" ... |
21-4-2016 at 22:12
by: soma |
trying to understand Ka
I'm wondering what the Ka of a substance is at 50% dissociation. If Ka=[A-][H+]/AH then e.g. if you ... |
16-4-2016 at 02:32
by: soma |
list of moderators and administrators
Wondering if there's a list of moderators and administrators somewhere?
Thanks. |
13-4-2016 at 00:08
by: soma |
clemmensen reduction
In explanations of clemmensens they say that the H from the acid is utilized. I wonder if it's a sim ... |
29-3-2016 at 00:34
by: soma |
clemmensen reduction
Yes. Actually I knew that pyrrole had double bonds but wasn't remembering. The text draws "pyrrol" l ... |
28-3-2016 at 13:55
by: soma |
clemmensen reduction
In the article that MeshPL posted, the zinc was "activated" by stirring with 2% hcl and then washing ... |
28-3-2016 at 00:57
by: soma |
clemmensen reduction
Thanks to everyone.
In the article that Solo posted it says that "In effecting the reduction of o ... |
28-3-2016 at 00:34
by: soma |
clemmensen reduction
In the clemmensen reduction an aldehyde or ketone is reduced using zinc amalgam and hcl in a solvent ... |
26-3-2016 at 01:20
by: soma |
degraded MgO
I've read that dead burned MgO is unreactive. Does that mean that it won't react with acids, or that ... |
16-3-2016 at 12:23
by: soma |
degraded MgO
The problem with using MgCO3 for ascorbate in solution is that the pH doesn't remain constant. The p ... |
16-3-2016 at 12:17
by: soma |
degraded MgO
How would you do that? Just heat it up in a metal pan on a gas stove? I wouldn't know how to measure ... |
16-3-2016 at 05:12
by: soma |
degraded MgO
I've been having problems with MgO. It seems to react easily with CO2 in the air and becomes the car ... |
14-3-2016 at 00:38
by: soma |
preliminary spot tlc
I'm not sure what this is called but it's a quick way to check solvent mixes for tlc suitability. It ... |
12-3-2016 at 23:32
by: soma |
using ehrlich's reagent
I was planning on using ehrlich's reagent to visualize tlc spots. I've got silica gel on plastic pla ... |
7-3-2016 at 01:31
by: soma |
synthesis of n-acetyl cysteine amide
Do you have an HPLC setup? Wondering how you're testing it. Are you doing the microwave synth?
I' ... |
5-2-2016 at 04:02
by: soma |
synthesis of n-acetyl cysteine amide
Actually, it's more like an oil than a lacquer.
I think the vapor may have been the urea? There a ... |
3-2-2016 at 23:44
by: soma |
synthesis of n-acetyl cysteine amide
I did the micirowave synth. The reactants formed a liquid as they were supposed to., after 100 secon ... |
3-2-2016 at 00:09
by: soma |
sub and superscript not working?
I've not been able to get the superscripts to work. For instance: 7[sup]o[/sup]. (I put a 7 and then ... |
10-1-2016 at 00:59
by: soma |
storage of ammonium hydroxide
I want to get ammonium hydroxide to use for tlc and column chromatography. The msds says to keep it ... |
10-1-2016 at 00:50
by: soma |
strange extraction
I was doing an extraction using hexane and basic water. I refluxed the solution slightly 1st and the ... |
8-1-2016 at 02:48
by: soma |
how to find a low cost consultant
[rquote=432207&tid=64615&author=Praxichys]1. Pure USP n-acetylcystene powder is sold online, ... |
22-12-2015 at 13:25
by: soma |
how to find a low cost consultant
Maybe I should add this:
Claims have recently been made that this compound has the ability to rev ... |
13-12-2015 at 22:59
by: soma |
how to find a low cost consultant
My main problem is access to analytical equip. But thanks Ozone for the mention of the difficulty wi ... |
12-12-2015 at 15:13
by: soma |
how to find a low cost consultant
You're talking about the professional rate -- not the rate that a chemistry student would expect? |
11-12-2015 at 15:22
by: soma |
how to find a low cost consultant
I'm wanting to develop a synthesis method for n-acetyl cysteine amide. I've posted a few threads on ... |
11-12-2015 at 00:19
by: soma |
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