Sciencemadness Discussion Board
Not logged in [Login - Register]
Go To Bottom

Search
[Next Page]
tool coatings removal
If DCM does not work well, try DMSO or DMF, they strip off most paint and plastic.
4-9-2019 at 09:51
by: Dr.Bob
Max G. Gergel
Not sure if shut down by EPA, or closed before it could happen, but something like that. That has ...
4-9-2019 at 07:15
by: Dr.Bob
Max G. Gergel
What many people don't understand is that in many cases, for example in world war 2, companies were ...
3-9-2019 at 17:58
by: Dr.Bob
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
[Next Page]

  Go To Top