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Carbohydrazide
I was going to suggest mixing phosgene and hydazine, but apparently that gives side products... ;-) ... |
21-6-2019 at 06:39
by: Dr.Bob |
Imine stability
Depends on both the carbonyl and the amine. Aldehyde imines are much less stable than ketones, an ... |
18-6-2019 at 10:01
by: Dr.Bob |
Anyone looking for glass ware, heating mantles, stirrers, pumps near Racine WI
I can say that were I work in a lab, virtually half or more of all glassware has one or more chips i ... |
16-6-2019 at 12:21
by: Dr.Bob |
Anyone looking for glass ware, heating mantles, stirrers, pumps near Racine WI
I just bought a few items via marethyu, to fill in some gaps I had, and received them as described, ... |
14-6-2019 at 05:41
by: Dr.Bob |
Craiglist 100$ Glassware JACKPOT!!!! (Pics)
Looks kind of like a vessel to collect liquified gases into (like ammonia or acetylene) from a conde ... |
11-6-2019 at 09:03
by: Dr.Bob |
Craiglist 100$ Glassware JACKPOT!!!! (Pics)
If you can post a few photos at a time of individual items, we can help name the and say what they a ... |
10-6-2019 at 18:12
by: Dr.Bob |
Shipping Azides and Cyanides in the United States.
In theory the recipient is not responsible for the mateials, unless they are illegal. But that does ... |
5-6-2019 at 13:25
by: Dr.Bob |
Shipping Azides and Cyanides in the United States.
The 30 gram amount is for compounds with limited hazards. For most azides (many are explosives und ... |
4-6-2019 at 16:58
by: Dr.Bob |
US China trade war and chemistry
Won't change prices to Asia (from China) I would guess, it might even drop there, as the demand may ... |
21-5-2019 at 10:17
by: Dr.Bob |
ISCO FOXY 200 Fraction Collector
Detecting 254 is easy, getting a pure 254 signal is harder. Simple UV sources are not terrible, but ... |
21-5-2019 at 09:41
by: Dr.Bob |
ISCO FOXY 200 Fraction Collector
I have used many of the FOXY variations. They are great for simple "automated" chromatography. T ... |
19-5-2019 at 18:48
by: Dr.Bob |
Troubles with Lithium-Halogen exchange reaction.
It might be that the anion can react with the nitrile in the molecule above -100 C, but that would ... |
19-5-2019 at 18:40
by: Dr.Bob |
Round bottom flask vs 'round bottom flask with flat bottom'
Just realized that you are in asia, so shipping would be prohibitive. But flat bottoms with joints ... |
30-4-2019 at 17:58
by: Dr.Bob |
Round bottom flask vs 'round bottom flask with flat bottom'
Realistically, if you want to distill something (or even reflux most organics), you will want to use ... |
28-4-2019 at 19:05
by: Dr.Bob |
Trying to get rid of chemicals. Nearish Philadelphia
Getting back to the original post, if you decide that you want to find a proper home for any of thes ... |
28-4-2019 at 18:46
by: Dr.Bob |
Type-k ptfe-coated thermocouples?
A glass thermocouple well is what you describe, but they are quite expensive (if well made with glas ... |
28-4-2019 at 18:24
by: Dr.Bob |
Trying to get rid of chemicals. Nearish Philadelphia
U2u sent. I know people in the area who are capable of safely dealing with most of that material. |
21-4-2019 at 17:11
by: Dr.Bob |
Science equipment looking for a home
I might have some stoppers that would fit, post or u2u the diameters you need. But I will be out th ... |
18-4-2019 at 18:34
by: Dr.Bob |
Science equipment looking for a home
Here are a few auger type, equalized, solid addition funnels, some gas washing tubes, and a drain-ab ... |
14-4-2019 at 18:43
by: Dr.Bob |
Potassium ethoxide
It is very tough to make useful KOEt from KOH and water, as even though the equilibrium reaction see ... |
8-4-2019 at 05:57
by: Dr.Bob |
Potential Extraction of Useful or Noteworthy Compounds from Fluorescent Light Phosphor
Older lamps used to contain berylium compounds, which were quite toxic, so be careful if these are o ... |
2-4-2019 at 09:23
by: Dr.Bob |
Looking for a Job
I would also advise you to look at manufacturing companies (paint, adhesives, polymers, oil/gas, bio ... |
1-4-2019 at 10:26
by: Dr.Bob |
Mariotte principle & constant addition funnels
I have a few of these still, for about $100 each, if anyone is interested. They are very hard to f ... |
1-4-2019 at 10:12
by: Dr.Bob |
Diethyl ether storage and peroxides
I have seen bottles of diethyl ether, THF and dioxanes that were as old as 20+ years. While some d ... |
1-4-2019 at 10:04
by: Dr.Bob |
Science equipment looking for a home
I still have a few 14/20 and 24/40 solid addition funnels, there might even be a photo posted somewh ... |
30-3-2019 at 18:27
by: Dr.Bob |
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