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Author: Subject: Pretty Pictures (2)
plastics
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[*] posted on 19-12-2017 at 08:34


Quote: Originally posted by Hegi  
Quote: Originally posted by Tetra  
Double recrystallized Nitroguanidine, formula CH4N4O2



Where did you get it?


https://www.sciencemadness.org/whisper/viewthread.php?tid=89...

Tried it myself ages ago

IMG_3351.JPG - 1.7MB
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Hegi
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[*] posted on 19-12-2017 at 12:17


Quote: Originally posted by plastics  
Quote: Originally posted by Hegi  
Quote: Originally posted by Tetra  
Double recrystallized Nitroguanidine, formula CH4N4O2



Where did you get it?


https://www.sciencemadness.org/whisper/viewthread.php?tid=89...

Tried it myself ages ago



Very nice guys, wish I had more time for organic synthesis...




Please visit our webpage full of great chemistry experiments and photos! We are also looking for editors, do not mind to contact us! http://www.chem.pieceofscience.com !
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Σldritch
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thumbup.gif posted on 21-12-2017 at 06:43
Aluminium Copper Alloy




AluminiumCopperCrystals.jpg - 1.4MB
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Hegi
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[*] posted on 21-12-2017 at 07:33


Quote: Originally posted by Σldritch  


Nicely crystallized, could you please provide more info?




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Σldritch
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[*] posted on 21-12-2017 at 08:56


Im trying to make raney copper and this was seen on a blob of 1:1 Al:Cu metal that was cooled by pouring into water. The picture was taken through a loupe but im still impressed by the crystal size considering the cooling rate. It is probably Al2Cu .
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TheNerdyFarmer
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[*] posted on 5-1-2018 at 20:48


It is beginning to get very cold where I live. I was doing an inspection of my chemicals (to make sure no glass bottles broke due to freezing) and was pleasantly surprised with this. The water crystals in this have formed nice, needle like structures in the bottle.

20180105_234721.jpg - 3.9MB
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wg48
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[*] posted on 19-1-2018 at 07:14
Mandelbrot set


View my zoom movie into the Mandelbrot set. I trimmed down from 150MB

Attachment: trip5.avi (6.9MB)
This file has been downloaded 2 times

15_28_45.jpg - 12kB 15_33_52.jpg - 28kB

15_37_13.jpg - 47kB

[Edited on 19-1-2018 by wg48]
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[*] posted on 19-1-2018 at 17:00


Got a small vial of trimethoxy benzaldehyde some time ago, extra toss in from getting indium sample. Well, I found it yesterday when cleaning. KA-THUMP! What was that... Ohh just a pile of stuff put in an odd location months ago.

Any how it was brown and odd looking. Got to check the melting point sans thermometer, = melts under boiling water temp. But only gave back brown looking crud. Did again and left wrapped in a towel to cool, big plates but not exactly better, same appearance. But it was soluble in water to a minor extent and I just used that capacity. Made a nice sat solution while learning the fun of makeshift filter and clogging said filter.

But the results were at least aesthetically pleasing, even if grueling to do. The day job suffered a touch from low sleep :( science when you can, consequences be damned.

IMAG4425.jpg - 845kB IMAG4429.jpg - 837kB


Crystals <------> crude mid solidification
IMAG4450.jpg - 984kB IMAG4422.jpg - 569kB

Suggestions for a legit use?

[Edited on 20-1-2018 by violet sin]




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[*] posted on 19-1-2018 at 17:49


Oh, hey, I know something about that.



The first step in the process of learning something is admitting that you don't know it already.
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violet sin
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[*] posted on 19-1-2018 at 17:56


You sure do man, it was almost lost to a crash of phosphoric acid, oil of wintergreen, Cu/NH3 cellulose solution, and some other random crap(not headed to garbage) left in the gutted out microwave that is FINALLY heading to the dump. Everything lived some how even after getting briskly lifted and tossed in a truck, lol.

Here are a couple pics from actual time in workspace. I was trying to study up and identify positively rhenium powder from an eBay purchase. It did not like most of the chem I threw at it. The borax bead test worked though. Sulfuric acid, not so much. Hydrogen peroxide 30% dented it though, add in some ammonia and it was dissolving the dust. And a last test, a tiny bit heated in a test tube with air in there made a subliming straw yellow oxide. Missing some pics though...


Ammonium perrhenate (1-4)
IMAG4453.jpg - 1.2MB IMAG4455.jpg - 1.2MB IMAG4459.jpg - 906kB IMAG4461.jpg - 803kB
Ammonium tungstate and a super tiny mag stir w/ Ru powder
IMAG4460.jpg - 1MB IMAG4462.jpg - 884kB

We should come up with a "testing eBay buys" thread for frustrated purchasers. Man that would be useful, lost ~230$ a couple years back on fake Or powder... But if you figure it out soon enough, eBay covers it.

[Edited on 20-1-2018 by violet sin]




Sauce
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