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Local Anesthetics
IIRC, we made lidocaine (2nd year Organic lab) from reacting 2,4-dimethylaniline with chloroacetyl c ... |
17-5-2011 at 07:22
by: Ozone |
HPLC peaks separation!!!
It really helps if I know what you are trying to separate from what.
O3 |
14-5-2011 at 21:49
by: Ozone |
Transesterification of fractionated coconut oil?
I've had better results (soybean oil) proceeding through the acid-catalyzed (H2SO4) route (at 78°C) ... |
13-5-2011 at 11:33
by: Ozone |
'White Gunpowder'
I would handle those...carefully. C12H22O11 corresponds to a hexose disaccharide, most probably sucr ... |
13-5-2011 at 11:26
by: Ozone |
Keeping the pyridine dry.
4A seem to work well for me. As for CO2, it would depend on the reaction (as a reactant or for pH co ... |
8-5-2011 at 17:54
by: Ozone |
Clostridium acetobutylicum
This works well and the fermentation is surprisingly hardy. We have a graduate student who has, thus ... |
27-4-2011 at 19:45
by: Ozone |
Reaction between zinc chloride and sodium hypochlorite?
Why don't yout give it a try?
O3 |
27-4-2011 at 19:34
by: Ozone |
Which is your year of birth?
Interesting bimodal distribution we are developing here. Am I really the only one from 1970-1979?
... |
27-4-2011 at 19:30
by: Ozone |
Chemistry Set Boasts “No Chemicals”
Magpie got it right. It appears that we find ourselves in a world where it has been acknowledged tha ... |
27-4-2011 at 19:09
by: Ozone |
Digital data logging
Not to fan the flames, but in this day in age, analog data acquisition will be more likely to surviv ... |
26-4-2011 at 18:09
by: Ozone |
Decomposition of ethanol
H2O2? Kind of tricky at the acidic pH (where peroxide is quite stable) of most drinks, though. |
25-4-2011 at 14:32
by: Ozone |
acetic anydride fluoride
How does Ti relate to acetic anhydride, here? :\ Anyway, we have used ammonium bifluoride to etch an ... |
25-4-2011 at 14:26
by: Ozone |
Periodic table has actually no more than 98 elements
They are no less elements than 12C, 13C or 1H, 2H. 252Cf, for example, is made is gram-quantities fo ... |
17-4-2011 at 09:42
by: Ozone |
Acyl chloride/ MeOH = esterification?
It makes anhydrous methanolic HCl (and equimolar methyl acetate). I do this frequently to prepare fa ... |
15-4-2011 at 20:18
by: Ozone |
oxalyl chloride and water
OK, I have confirmed garage chemist and woelen:
Method:
To 50 mL just-freezing DI water was ra ... |
11-4-2011 at 16:07
by: Ozone |
Photostable Hydrophobic Fluorescent Dyes
Holy cow. What sort of source are you using that will photobleach things in 5s? The Sudan dyes are p ... |
8-4-2011 at 19:33
by: Ozone |
oxalyl chloride and water
Yes, oxalic acid and HCl.
O3
[Edit]:
Hmm. It would appear that in some cases (depending up ... |
8-4-2011 at 19:29
by: Ozone |
Citric acid -> mesaconic acid.
Looks more like it dehydrates to yield a mixture of cis/trans aconitic acid which then decarboxylate ... |
1-4-2011 at 19:23
by: Ozone |
removing O2 from enzymatic reaction
IIRC, it's about 8 mg/L at rtp. Use helium as a sparging gas (an hour or so seems to work fine) and/ ... |
30-3-2011 at 16:34
by: Ozone |
Zinc sulfide thin films on glass
"..must be thin for sensitivity."
Not so for gammas! A glass slide over the one with the ZnS secu ... |
19-3-2011 at 07:01
by: Ozone |
desktop NMR?
"I would love to have one such machine at home, but at the job I would hate it."
This.
But, An ... |
16-3-2011 at 17:56
by: Ozone |
Calorimetry problem…
If the escaping gas is hot, it is not at equilibrium...unless the water is also hot (which it most ... |
8-3-2011 at 21:26
by: Ozone |
Calorimetry problem…
None, so long as all of the heat has already been transferred...
OK. Where W = 0, DH=nCvDT = DU=m ... |
8-3-2011 at 11:25
by: Ozone |
Production of CHCl3
I would suggest first checking "today's posts" to find someting like this:
http://www.sciencemadn ... |
23-2-2011 at 18:57
by: Ozone |
HPLC removal
Get a dionex UI-20 or ACI (use old Peaknet 5.1 that can be had for next to nothing) and convert any ... |
23-2-2011 at 13:45
by: Ozone |
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