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

Search
[Next Page]
Esterfication Question
[rquote=338859&tid=31730&author=UnintentionalChaos][rquote=338849&tid=31730&author=A ...
18-7-2014 at 17:41
by: Ascaridole
Esterfication Question
Ahhh your reflux temperature may be exceeding the thermal limit of your resin. Perhaps the high temp ...
18-7-2014 at 16:57
by: Ascaridole
Esterfication Question
Steam, what do you mean by charged?
Charged as in exhausted, all H+ replaced by a metal cation or ...
18-7-2014 at 12:42
by: Ascaridole
Mystery Glassware Identification Thread
Wow that is an unusual setup definitely custom. Its used to dry material very sensitive to thermal d ...
18-7-2014 at 12:30
by: Ascaridole
What do you do to prevent yourself from chemicals?
On topic but not, a proper fitting lab coat. A lab coat with long baggy sleeves is not good PPE and ...
17-7-2014 at 20:22
by: Ascaridole
How carcinogenic is benzene really?
Any chemical should always be treated as if hazardous. Especially in the case of home experimenters. ...
17-7-2014 at 19:46
by: Ascaridole
Esterfication Question
Use an organic acid like pTsOH or strongly acidic cation exchange resin as your catalyst. Octanol as ...
17-7-2014 at 19:04
by: Ascaridole
Glassware "Donations"/ used glassware
If you are in need of something and have a well thought out experimental in mind I'm sure someone on ...
17-7-2014 at 16:41
by: Ascaridole
Cleaning glassware and other equipment
Ha so that's where your cool unknowns are coming from... 6M nitric is good for organics and inorgani ...
17-7-2014 at 16:33
by: Ascaridole
Vacuum Filtration
Perhaps a thread of "free" equipment for the beginner is in order?
17-7-2014 at 16:24
by: Ascaridole
Vacuum Filtration
Hey random22, you need an aspirator? I got a few left from when my company went to KNF pumps. U2U me ...
17-7-2014 at 13:05
by: Ascaridole
Mystery Glassware Identification Thread
Thermometer hanger for full immersion thermometers so you can measure the vapor temperature at the h ...
17-7-2014 at 12:59
by: Ascaridole
Beginning chemistry.
Hahaha 20's nahh..... I know of a 82 year old guy who went back to college to take o-chem just to se ...
17-7-2014 at 01:18
by: Ascaridole
H3PO4 + Al = phosphine ?
For the most part no, 85% is the limit for ortho phosphoric acid. If pyrophosphoric acid is not a pr ...
16-7-2014 at 16:03
by: Ascaridole
Beginning chemistry.
Hi nannah, first let me ask what is your educational background. Have you had general chemistry clas ...
16-7-2014 at 15:21
by: Ascaridole
Preparation of n-Caproic Acid
The larger phase is not a sign of a bad extraction, weird crap happens when you are working with med ...
16-7-2014 at 13:31
by: Ascaridole
Preparation of n-Caproic Acid
Rather than work up perhaps distillation from the reaction flask is more practical as the Org Syn ar ...
16-7-2014 at 03:48
by: Ascaridole
Mystery Glassware Identification Thread
I'd second UC's idea of a Kjeldahl trap. Kinda interesting design actually, vapor can enter in the t ...
15-7-2014 at 19:07
by: Ascaridole
Nitric Acid and Silver Nitrate
Yay for the P2O5 method!

Just dissolve the P2O5 into some phosphoric acid, yes it will turn some ...
15-7-2014 at 19:01
by: Ascaridole
The best way to physically destroy an hard disk
Oxyacetylene torch... make sure to destroy the board also, I think oxyacetylene will take care of ev ...
15-7-2014 at 18:45
by: Ascaridole
How carcinogenic is benzene really?
I don't think benzene is that dangerous. If you are careless and irresponsible yes it can be dangero ...
15-7-2014 at 17:31
by: Ascaridole
Reagent Density issue, what factors can influence changes in density in a normal lab setting?
HgDinis25 does have a very good point. Beakers are about +/- 5-10% or even more depending on volume ...
8-7-2014 at 00:57
by: Ascaridole
Reagent Density issue, what factors can influence changes in density in a normal lab setting?
I'm not 100% sure but I remember anisole having a b.p. below 200ºC, like in the 150ºC range. Wikip ...
7-7-2014 at 15:13
by: Ascaridole
Waste disposal (tests and procedures)
Proper planning and careful selection of reagents for your reactions should almost eliminate any was ...
7-7-2014 at 14:40
by: Ascaridole
Is bubbling air through a solution an effective way to rid residual gas?
Vacuum works fine, we degas water for HPLC this way, you do however need vigorous stirring however w ...
7-7-2014 at 13:57
by: Ascaridole
[Next Page]

  Go To Top