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Candles question
Parafin is a complex mix of hydrocarbons, not just one compound. Much like gasoline contains many ...
16-9-2017 at 18:01
by: Dr.Bob
System to seperate Ethylene Glycol & PG from water - most efficient method?
AFAIK, distillation is the only good answer. You will have a hard time getting "pure" water from E ...
12-9-2017 at 17:43
by: Dr.Bob
Does anybody work in the "chemistry field"?
I agree that going back to school for new knowledge is always great and I recommend it.

However ...
12-9-2017 at 17:32
by: Dr.Bob
Automatic glassware cleaner concept
Fisher and VWR and others sell lab dishwasher with lots of tubes sticking up that spray water inside ...
12-9-2017 at 17:17
by: Dr.Bob
3-acetylindole
The simple 1,3-diacylation and then deprotection makes sense, plus for many reactions, you would nee ...
12-9-2017 at 17:09
by: Dr.Bob
Really great bulk deal in Fall river Massachussets?
I have a few odd parts of reactors, mostly 500 and 1L ones, but not much for clamps, either. One o ...
11-9-2017 at 10:22
by: Dr.Bob
Really great bulk deal in Fall river Massachussets?
If you really want some very large lyopho jars, I have a whole box of them. I'll sell you one to 1 ...
10-9-2017 at 14:54
by: Dr.Bob
US Pyrex kitchenware not Borosillicate glass!
Sadly, much cookware in the US has been soda lime for years now. The index of refraction is differ ...
10-9-2017 at 14:44
by: Dr.Bob
Cheap gold trichloride
Yes, Chinese companies are notorious for listing items for sale that they 1) don't have, 2) are list ...
8-9-2017 at 15:16
by: Dr.Bob
Which pump when working with flammable gas?
We use water aspirators to evacuate hydrogenations, much safer. If you use a recirculating pump, i ...
1-9-2017 at 07:07
by: Dr.Bob
OTC pyrazole synthesis
The synthesis of Rimonabant (the no longer sold weight loss drug) is a great example of pyrazole che ...
1-9-2017 at 05:27
by: Dr.Bob
Science equipment looking for a home
No gas cylinders or high voltage equipment. I do still have some vacuum traps, dewars, and other v ...
28-8-2017 at 15:48
by: Dr.Bob
Pd/C (10%, wet) for trade
Once dried the material is much more pyrophoroic, so I would not dry it. In most cases the water i ...
28-8-2017 at 15:45
by: Dr.Bob
Old ether bottle - open under water?
If you post roughly where you live someone may be willing to help you dispose of it. There are mul ...
25-8-2017 at 05:04
by: Dr.Bob
Source of distributed low amount of heat (45 watts over 100ft)
I recently had an electrician try to explain that a fluorescent light ballast was really a step down ...
12-8-2017 at 08:09
by: Dr.Bob
Source of distributed low amount of heat (45 watts over 100ft)
Heating pad from the drug store? Electric blanket? Crock Pot.
9-8-2017 at 16:49
by: Dr.Bob
Lab grade heat gun - one of the best investments! NO MORE HarbFr crap!
I think I have one or two of those somewhere in my pile of stuff, they are great for heating reactio ...
9-8-2017 at 16:47
by: Dr.Bob
Science equipment looking for a home
I will again be traveling for a week plus shortly, so please be patient with me if you email me. I ...
9-8-2017 at 11:59
by: Dr.Bob
Small UVC lamp for in flask use
I know people who used to just set up their reaction in a Pyrex baking dish and sit on top of the ro ...
7-8-2017 at 16:39
by: Dr.Bob
DCM storage
Simple glass bottles with lined caps are fine. Glass joints will work, but might still have some e ...
6-8-2017 at 18:29
by: Dr.Bob
Handling possible nitrogen trichloride/dichloramine contaminated DCM
We use solutions of ammonia in DCM and CHCl3 (most often with 10-20% MeOH) routinely at work, have n ...
6-8-2017 at 18:17
by: Dr.Bob
Science equipment looking for a home
Unfortunately no short 24/40 vigreaux columns left. Don't have many 24/40 large round bottoms eit ...
31-7-2017 at 16:58
by: Dr.Bob
Can someone with an Ika RCT or RET hotplate help me out?
Are you guys in the US or Europe? I have a broken one or two IKAs that I would like to either get ...
31-7-2017 at 16:45
by: Dr.Bob
High-pressure hydrogenation for super cheap! But will it work?
Given that they are 2 ml vials, it will be hard to generate much H2. I can think of some safer ide ...
31-7-2017 at 16:39
by: Dr.Bob
Science equipment looking for a home
I am back from a bit of travel now, and trying to finish catching up on inquiries, so thanks for peo ...
29-7-2017 at 06:47
by: Dr.Bob
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