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Author: Subject: Pretty Pictures (2)
Sulaiman
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[*] posted on 1-1-2017 at 10:36


have you looked carefully at the crystals ?

I recently re-crystalised salicylic acid from water just to see the hollow square crystals.




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[*] posted on 1-1-2017 at 14:33


Salicylic crystals are hollow?! That's weird. Upon closer examination they are square, but I can't tell if they're hollow. Perhaps I'll have to take a look under the microscope.
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[*] posted on 1-1-2017 at 19:43


I could see the 'hollowness' using a magnifying glass but I could not get a decent photo' with my 'phone, hence not shown before.
this is the best photo' that I got ... growing in a beaker



SalicylicAcid.jpg - 191kB




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[*] posted on 2-1-2017 at 09:51


Some NaCl crystals I grew last year. I placed 2 L of supersaturated NaCl solution in a wide plastic tray and left it to evaporate over the summer. When the volume decreased to half, I noticed the crystals grew much slower, so I decided it wasn't worth the effort and simply took them out of the solution. The next batch gave smaller crystals, I guess the bigger the solution volume, the bigger the crystals. Oh and the NaCl I used was from water softening tablets.
YvX2E8f.jpg - 557kB




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chironex
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[*] posted on 5-1-2017 at 03:44


Some of my favorite pictures. I know they're not all strictly chemistry, but I thought people here could still appreciate them:

hydrothermally grown carbon nanofoam SEM:

yRv4B6z.png - 590kB

DC magnetron I built:

7qAoETb.png - 333kB

Immunoflourescently labeled ad DAPi stained mouse 3t3 cells, 1 undergoing mitosis:

QDxQze1.jpg - 34kB

Venus fly trap, trap, stained with tuluidine blue. Digestive enzyme excretion glands can be clearly seen:

3pIbVu3.jpg - 72kB

Decellularized pig heart and decellularized strawberry:

il6wrjr.jpg - 950kB q9F6fCW.jpg - 1.4MB

And finally, hydrothermally grown copper crystals:

dRraAzs.png - 813kB QRQQYVK.jpg - 219kB


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5-1-2017 at 10:39
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[*] posted on 6-1-2017 at 07:45


SAM_4456  d.jpg - 6.7MB
Iodine crystals. And a bit of tiny ember glass shards.




[Edited on 6-1-2017 by TheMrbunGee]
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[*] posted on 8-1-2017 at 16:16


Wow, MrbunGee, those iodine crystals are really neat! I've never seen any that look quite like that. How did you go about making them?

Also, I have my own pretty crystal picture to share now. I found these in the container of waste acetone that I used to rinse off my glassware after making Martius yellow (2,4-dinitronaphthol). I wouldn't have expected Martius yellow to grow such nice crystals, but it did!

IMG_2918.JPG - 2.3MB
I'd like to try growing a larger one now that I know it works.




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[*] posted on 9-1-2017 at 05:56


Quote: Originally posted by zts16  
Wow, MrbunGee, those iodine crystals are really neat! I've never seen any that look quite like that. How did you go about making them?


It came from 40 year old hydrogen iodide bottle, the HI had oxidized and most of the iodine crystalized out very slowly!

Here is the video of getting it out!
https://www.youtube.com/watch?v=4LMd8xiq-xY
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[*] posted on 9-1-2017 at 09:29


Definitely to nice to brake up that iodine!
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[*] posted on 13-1-2017 at 14:45


A so called Metalcarbonylhydride or Hieber-Base, in this case K[HCr(CO)5]. Had to prepare this at the university this week. It's quite unstable but has a lovely color.



MC.JPG - 72kB




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[*] posted on 13-1-2017 at 15:02


Quote:

Here is the video of getting it out!
https://www.youtube.com/watch?v=4LMd8xiq-xY


Lovely video. I am going to have to watch more of those.
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[*] posted on 13-1-2017 at 16:16


Cemented copper from e-waste sol, onto a large square nail (~12" long). It nearly ate through at the liquid/atmosphere interface.

IMAG8604.jpg - 1.1MB IMAG8688.jpg - 907kB IMAG8682.jpg - 784kB
Manganese sulfate from battery crud. The reddish was from the first pull, second go was much lighter colored. What a mess to play with. Brought back memories of much earlier experiments with copper.


IMAG8673.jpg - 750kB IMAG8684.jpg - 717kB
Alum from a heat-sink/H2SO4. I had none laying around, but did have the makings for it. The stuff was heated untill a light crust formed, then cooled. It had a really cool gell texture with an opalescent marbled look. Neat

IMAG8661.jpg - 907kB
Zinc sulfate crystal in petri dish.







[Edited on 14-1-2017 by violet sin]




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[*] posted on 13-1-2017 at 16:17


A crystal of sucrose, a crystal of nickel-doped ammonium magnesium sulphate dodecahydrate, and crystals of bis(ethylenediamine)copper(II) nitrate.

xtal1.jpg - 32kBxtal2.jpg - 22kBxtals.jpg - 74kB




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[*] posted on 13-1-2017 at 23:57


How does one get so clear transparent crystal? Mine are always dim.
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[*] posted on 14-1-2017 at 02:18


Quote: Originally posted by Neme  
How does one get so clear transparent crystal? Mine are always dim.

The crystal of sucrose, sadly, was not intentionally grown, but was found in a very old bottle of children's cough syrup.




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[*] posted on 14-1-2017 at 03:45



Some copper compounds.

https://imgur.com/a/nPxHC


Details here: https://www.sciencemadness.org/whisper/viewthread.php?tid=71...


[Edited on 14-1-2017 by CaCl2]

[Edited on 14-1-2017 by CaCl2]

IMG_6419.JPG - 1.5MB
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[*] posted on 14-1-2017 at 18:12


Love the rainbow display, cool stuff ^^^
1) Flea market score. 1$/ea
2) View of a family members front deck :)

IMAG8790.jpg - 637kB IMAG8781.jpg - 1.6MB

They were doing cedar essence oil from chips and needles.

[Edited on 15-1-2017 by violet sin]




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[*] posted on 17-1-2017 at 19:09


On the left, Martius yellow as the ammonium salt in aqueous solution, and on the right as the free acid upon addition of a few drops of conc. HCl.

IMG_2951.JPG - 1.3MB IMG_2952.JPG - 1.2MB
Not sure why they're showing up sideways.

Oh yeah, and aga, I realized that if I set my phone camera to "square," the pictures are just small enough to post here, so I will likely double post more of my pictures between my blog and here.

https://texium.wordpress.com/2017/01/17/update-on-martius-ye...




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