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Separation of toluene and isobutanol
Both are excellent octyane enhansers, just add a few quarts to your tank at every fill up if you can ... |
16-8-2019 at 07:30
by: Dr.Bob |
Make perfluorohectane? (possible supercritical fluid at room conditions)
You are effectively describing low molecular weight Teflon. Which would not be a practical liqui ... |
12-8-2019 at 11:52
by: Dr.Bob |
fume hood airflow is cooling off hotplate
I have seen the same issue when running reactions without good temperature control, when the hood is ... |
11-8-2019 at 16:52
by: Dr.Bob |
Equipment / glassware lot for sale; DC area pickup
Did this lot sell on Ebay or is it still listed? |
4-8-2019 at 13:23
by: Dr.Bob |
Mystery Glassware Identification Thread
The custom volumetric was likely designed to make a certain solution, like 1/6th X in 50:50 ethanoli ... |
2-8-2019 at 04:19
by: Dr.Bob |
Can anyone figure out what this device is?
Looks like the guts from a mass spectrograph, likely one from a HPLC-LC. This is the ion trap, if ... |
31-7-2019 at 10:14
by: Dr.Bob |
How to grind hard stones like quartz and powder them cheaply
Try dynamite. It works wonders. But for powdering rocks, it takes a pretty strong device, whic ... |
21-7-2019 at 14:09
by: Dr.Bob |
Heating mantle blew up WTF!!!!!
"as soon as I bought it I plugged it in turned it up to max and let it burn off the coating"
This ... |
21-7-2019 at 14:07
by: Dr.Bob |
Mystery Glassware Identification Thread
The bottom flask looks like a volumetric flask. The volumes of each part all look similar, so mayb ... |
10-7-2019 at 07:02
by: Dr.Bob |
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 |
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