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Author: Subject: Pretty Pictures (2)
UnintentionalChaos
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[*] posted on 1-12-2013 at 16:47


Quote: Originally posted by mr.crow  
Quote: Originally posted by UnintentionalChaos  
Some vacuum distilled phenol crystals in a 50ml RBF. These were prepared by decarboxylating salicylic acid. I am working on trying to boost the yield. It currently stands at 57%


Will you be making a video of this? I would really like to see it :)


Unfortunately, I wasn't planning on doing any additional videos unless I get a new camera. The sound is shot and I can't use an external mic with it. I get so much more done without constantly editing and recording, too...

I did do a writeup with some pictures in prepub though, which I suggest you have a look at.




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kristofvagyok
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[*] posted on 1-12-2013 at 16:53




Making some water free KOH by melting and boiling it out in a silver pot. It is ready when it stops boiling.

Care should be taken while working with it, especially when it's molten ;)




I have a blog where I post my pictures from my work: http://labphoto.tumblr.com/
-Pictures from chemistry, check it out(:

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Brain&Force
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[*] posted on 1-12-2013 at 16:54


Kristof, your pictures are amazing. What were you trying to make?

I'll try to compete with my more modest photos:

1. Terbium, after a real beating. It's a lot shinier on the inside. Wikipedia says it's soft, but doesn't say it's ridiculously durable.
2. Bismuth stairs.

terbium after breaking.png - 1.4MB bismuth.png - 1.1MB

Edit: Kristof, I was referring to your post with the hydrogen apparatus.

[Edited on 2-12-2013 by Brain&Force]




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kristofvagyok
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[*] posted on 1-12-2013 at 17:16


Quote: Originally posted by Brain&Force  
Kristof, your pictures are amazing. What were you trying to make?

For the hydrogenation we tried to make a 1,1 disubstitued hydrazine from a nitroso coumpound (both quite toxic...). Sadly the N-N bond broke and I got back the disubstitued amine and some ammonia.

For the molten KOH, we needed something to distill from ethylamine, since we opened a few cylinders of it, what were stored for a few years. It was great to distill 2-5 liters of this gas, everything smelled like fish, even since it was under a fume hood :D




I have a blog where I post my pictures from my work: http://labphoto.tumblr.com/
-Pictures from chemistry, check it out(:

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Bezaleel
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[*] posted on 2-12-2013 at 08:05


A very all day compound: K2SO4

The individual crystals making up this cluster are about 1 cm long.
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Hegi
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[*] posted on 2-12-2013 at 10:39


Quote: Originally posted by kristofvagyok  


Making some water free KOH by melting and boiling it out in a silver pot. It is ready when it stops boiling.

Care should be taken while working with it, especially when it's molten ;)


definitely would be scared to do this thing... but anyway, very interesting ;)
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Zephyr
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[*] posted on 6-12-2013 at 22:19





some beautiful uranophane crystals posted by kristofvagyok in the uranium thead.




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Pyro
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[*] posted on 7-12-2013 at 16:32


m-dinitrobenzene


WP_20131207_045.jpg - 88kB WP_20131207_042.jpg - 144kB

smells a bit like almonds, but more like marzipan. in the spirit of Christmas




all above information is intellectual property of Pyro. :D
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kristofvagyok
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[*] posted on 8-12-2013 at 16:06





A biphasic highly fluorescent oil under UV light, containing some substitued coumarine what I made a few day ago.




I have a blog where I post my pictures from my work: http://labphoto.tumblr.com/
-Pictures from chemistry, check it out(:

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Sublimatus
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[*] posted on 8-12-2013 at 18:25


One of your best photos, kristof. :)
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mr.crow
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[*] posted on 8-12-2013 at 21:06


New element sample :) Probably only a few mg

2013-12-08 16.05.26.png - 914kB




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Mailinmypocket
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[*] posted on 11-12-2013 at 05:54


Tried the oxidation of paracetamol to p-benzoquinone with aqua regia. The appearance looks good but this afternoons melting point will give a better idea of how the reaction turned out, looks nice though :)
image.jpg - 78kB
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Brain&Force
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[*] posted on 12-12-2013 at 20:30


Not chemistry related, but pretty nonetheless. The panorama feature on my camera is useful for capturing such phenomena.

rainbow-small.jpg - 139kB

I wish I could upload the monster 2800x1440 full size photo.

Bonus: Is it a solar halo, or a street lamp at 1.21 gigawatts?

halo-small.jpg - 362kB




Raney nickel can't hydrogenate dank memes.
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[*] posted on 14-12-2013 at 02:04


Hydrolysis of ASA to yield SA gave some nice crystals: ( 95% yield too :P)

ASA to SA.png - 681kB
Some ethyl acetate from non-acetone nail polish remover.
ethyl acetate.png - 417kB

[Edited on 14-12-2013 by HeYBrO]




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DJF90
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[*] posted on 14-12-2013 at 04:44


@Mailinmypocket: Looks really good. It appears as if you sublimed it? I've noticed that no mater how clean you make it, it eventually gets a green tinge and it can only get worse from there. Use it as soon as possible! Maybe storing under argon would help...
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Mailinmypocket
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[*] posted on 14-12-2013 at 06:41


@DJF90 - Thanks, not sublimed though. These crystals were produced by 2x recrystallization from boiling 90% 2-propanol. I plan on sublimating them before taking a mp though. After the initial reaction with aqua regia, quenching with water, and filtration I noticed small black bits in the filter cake.

When dissolved in boiling alcohol the first time it yielded an extremely deep red (almost black) solution. I think there may have been some over oxidation or likely a bit of chlorination happening during the reaction, despite being kept in ice, which yielded side products. Anyhow, left to cool slowly with insulation long orangey-yellow needle like crystals formed from the wine red liquor which were again, recrystallized from boiling 2-propanol. That is what produced the crystals seen above. I took your suggestion and flushed the bottle with argon in the meantime until a sublimation and mp can be done though.
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[*] posted on 14-12-2013 at 16:02


Bismuth trioxide thermite, a series of explosions that happened in a short amount of time

icon1.PNG - 503kBicon2.PNG - 419kBicon3.PNG - 578kBicon4.PNG - 260kB
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[*] posted on 19-12-2013 at 08:43


I don't have the best camera. I was inspired by other photo's, so I thought let's try it myself.
<img class="decoded" src="http://www.sciencemadness.org/talk/files.php?pid=311781&aid=28118" alt="http://www.sciencemadness.org/talk/files.php?pid=311781&aid=28118"></img>

DSC02409 - kopie.JPG - 153kB

[Edited on 19-12-2013 by DutchChemistryBox]




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MrHomeScientist
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[*] posted on 19-12-2013 at 12:06


Very pretty. What is it?

Best to include a description of your experiment along with the photos, as others have done!
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Tsjerk
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[*] posted on 19-12-2013 at 12:51
GFP expressing E. coli


Not the best quality picture ever, but showing clear fluorescence though.

This is a 50 ml tube with a pellet of E. coli expressing green fluorescent protein (GFP) above a UV lamp. The picture is taken through a filter, filtering the UV/blue light, but not the green light.

gfp 2.png - 178kB
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[*] posted on 19-12-2013 at 14:15
Some pretty pictures


They are all empty, LOOOOOOONG ago.

Attachment: Vintage Pharmaceuticals.rar (2MB)
This file has been downloaded 563 times

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19-12-2013 at 14:22
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[*] posted on 19-12-2013 at 14:55


Quote: Originally posted by Mailinmypocket  
Tried the oxidation of paracetamol to p-benzoquinone with aqua regia. The appearance looks good but this afternoons melting point will give a better idea of how the reaction turned out, looks nice though :)


Would you care to right your procedure up? I'd like to try it.




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Mailinmypocket
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[*] posted on 19-12-2013 at 17:42


Sure! I used the procedure posted by our own benzylchloride1 in this thread:

http://www.sciencemadness.org/talk/viewthread.php?tid=8250

I still have the stuff stored under argon waiting for a chance to take a melting point, when time permits... Damned holidays
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[*] posted on 19-12-2013 at 19:31


Here is an old photo I found when I stained a nematode with methylene blue (which stains acid regions like proteins and nucleic acids)
Notice the flagella which help nematodes move.

Screen Shot 2013-12-20 at 2.25.15 pm.png - 263kB




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kristofvagyok
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[*] posted on 21-12-2013 at 17:36





Some trimethylsilyl acetylene’s silver salt just when it was ignited.




I have a blog where I post my pictures from my work: http://labphoto.tumblr.com/
-Pictures from chemistry, check it out(:

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