A biphasic highly fluorescent oil under UV light.
In both phases there was a fluorescent compound, so when I placed an UV lamp next to the glass this adorable color appeared.
The upper, organic layer contained a coumarine compound what had a strong yellow/green fluorescence, the bottom layer contained an aldehyde-bisulfite salt what produced this strong blue fluorescence.
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9:31 pm • 10 March 2014 • 46 notes
Filtration through a pad of Celite(Diatomaceous earth) to remove small floating particles from the solution.
And yes, the Büchner flask was hanging in the air…
9:30 pm • 9 March 2014 • 21 notes
Golden rule of crystal growth is: put it on the shelf and forget about it.
How to do it? How to get really spectacular crystals from something? It’s easy, just follow a few simple rule!
Find a solvent what dissolves your compound while it’s hot and not if it’s cold. How? Do experiments on a small scale, e.g.: in a test tube.
In many cases if you try to grow crystals from what you find home, water or alcohol will work as a solvent, or the mixture of these two. Remember, always try to find a solvent or a combination of solvents what only dissolves your material completely when it it hot.
Add some of your previously powdered substance to the right solvent and heat it up, until it is dissolved completely.
If if doesn’t dissolves your material completely, than add a bit more solvent, or heat it until it boils, or if it still wouldn’t want to dissolve it, filter our the insoluble material.
When it’s ready place it at a place where it could cool down SLOWLY! Golden rule of crystal growth is: put it on the shelf and forget about it.
If you do every step correctly, than it should look like this:
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7:59 pm • 9 March 2014 • 28 notes
A long Graham condenser used to distill volatile solvents.
Since multigram-scale chemistry needs sometimes a lot solvent, from time to time we collect the used organic solvents and distill them after removing the acidic/basic/gunk components. This is pretty useful, because we need to buy much less solvents for the lab work.
9:30 pm • 8 March 2014 • 19 notes
Steam distillation of chamazulene from chamomile.
Chamazulene is a blue oil, what is found in chamomile flowers, even when they are dried. It is a really interesting compound, since it has an azulene skeleton what is an isomer of the naphthalene, the only difference, that it does not contain two 6 carbon aromatic rings, it has a 5 and a 7 carbon ring in it.
Interesting fact: if you heat or expose pure azulene to strong light it will isomerize to form naphthalene.
9:31 pm • 7 March 2014 • 60 notes
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10:31 pm • 6 March 2014 • 4 notes
Just a vacuum distillation, nothing special.
9:30 pm • 6 March 2014 • 22 notes
Found this little pal on the fume hood of a nearly lab(:
Do any of you have similar things on the hoods?
9:30 pm • 5 March 2014 • 25 notes
Introducing some chlorine in a reaction. The gas bubbler was filled with a little concentrated sulfuric acid to remove traces of water and to note that is the chlorine going in, or it is coming out from the reaction.
9:30 pm • 4 March 2014 • 26 notes
Filtration of really small amounts.
I made a cobalt complex of the Schiff base what was recently prepared and ended up with this blood like solution. The bad point: it is the strongest colorant what I have ever prepared. The good point: it is pure!
9:30 pm • 3 March 2014 • 33 notes