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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.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 181 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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violet sin
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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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Melgar
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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]




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[*] posted on 3-2-2018 at 11:37


Drinking too much is bad for the health, however Nature makes use of Everything.

noon.jpg - 36kB




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CharlieA
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[*] posted on 3-2-2018 at 16:38


That's an example of green chemistry, isn't it?
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[*] posted on 19-2-2018 at 06:06


Some photos of a mixture of p-xylene and water from who knows how long ago:



[Edited on 19-2-2018 by WouldSynthesizeForFood]
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[*] posted on 21-2-2018 at 23:39



1)Thrift store find, another good book.
2) EBay purchase 5$ = 50 switches.
IMAG4748.jpg - 839kB IMAG4757.jpg - 1.2MB

IMAG4764.jpg - 667kB IMAG4747.jpg - 1.2MB
3) Can't really tell, but that's bees wax bubbling up outta yuck soup... Rotting pollen etc. from a failed colony.
4) Built another ATX power supply for working around with small projects. The two power resistors are fixed on a heat sink over the exhaust fan, conveniently blowing outward.




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[*] posted on 2-3-2018 at 00:41


Whoops, might’ve left some sodium sulphate solution in a separatory funnel. Also, a sodium sulphate forest in a 250mL RBF.

56DD2CDF-1438-43EE-952F-C8277EA6707E.jpeg - 477kBCAA2AF4A-6438-4DFF-8191-0646812C3745.jpeg - 419kBA8BD4F7D-54B0-41AF-914B-CF27E0D64A1D.jpeg - 204kB




In chemistry, sometimes the solution is the problem.

I am now training to manufacture contact lenses for a living. Time to join the lab community!
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[*] posted on 2-3-2018 at 01:49


I think this is a CaSO4 crystal in a solution of HNO3 and H2SO4. I took a concentrated solution of Ca(NO3)2 and added it to a 30% solution of H2SO4, with excess H2SO4, filtered and then tried to distill off some of the HNO3 (didn't work to well) but about 150ml of liquid came over, so there was more CaSO4 dissolved in the hot solution after about 2 weeks I checked the bottle and found these little beauties growing.



CaSO4 urchin crystal.jpg - 123kB CaSO4 urchin crystal 2.jpg - 132kB CaSO4 Crystal or nitrate.jpg - 159kB
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[*] posted on 2-3-2018 at 02:35


Wow those are beautiful.
Is it possible to take them out of the bottle or are they too britle?




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[*] posted on 2-3-2018 at 03:03


Quote: Originally posted by violet sin  
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.


I too have had difficulty fiding pure Or powder :P




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[*] posted on 2-3-2018 at 04:52


Quote: Originally posted by crystal grower  
Wow those are beautiful.
Is it possible to take them out of the bottle or are they too britle?


On the last page, I had a similar thing going on with the fluffy crystal balls. They’re far too delicate to do anything with and just disintegrate when touched, which is disappointing to say the least. Best thing to do would be to transfer the solution into a fresh ‘display’ container to let it evaporate off, where it can then be capped and stored (not sure how they behave with long exposure to air, but I’ve grown some stunning crystals in the past just for them to fall apart into powder!)




In chemistry, sometimes the solution is the problem.

I am now training to manufacture contact lenses for a living. Time to join the lab community!
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[*] posted on 3-3-2018 at 01:39


sulaiman: ya got me there... Ir as in Iridium... 99% of the time I'm typing on a phone that was popular in, wow I'm not sure. wiki- "The smartphone was unveiled on 19 February 2013". I've been a victim of the dreaded Auto-Correct, no matter how it occurred :( i blame the operator




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[*] posted on 7-3-2018 at 17:51
Not quite sure what this is but it is beautiful


I ran a cell using two graphite electrodes in my first attempt to make NaBrO3 from NaBr and after putting the solution after electrolysis into a beaker and added some KOH in the hopes that the less soluble KBrO3 would crystallize out I ended up with this.



IMAG0155.jpg - 1.4MB
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The Volatile Chemist
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[*] posted on 7-3-2018 at 20:45


That looks sweet. It's always fun to go down to the lab and find something like that, even when you're not 100% certain what it is.



My write-ups are on here...
http://www.MeltThe.Ga or http://ptp.x10.mx
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[*] posted on 8-3-2018 at 12:56


Yeah I know right?

I left the solution sitting in a beaker for about three days until I figured out a way to get the graphite powder out of solution without using a glass fritt and then saw this sea urchin looking crystal and decided it was just too pretty to dissolve it again.

I actually had another strange formation, I did the procedure for p-DDNP from acetaminophen nitration written by I believe the member nitro-genes which was an excellent and fun project. I was recrystallizing recovered Isopicramic acid before diazotization and I had it sitting in a weighing boat dissolved in MeOH and it seems that as the solvent evaporated it grew these strange looking crystals

IMAG0161_BURST002_COVER.jpg - 1.5MB
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[*] posted on 9-3-2018 at 09:47


Yellow Cardinal
https://www.youtube.com/watch?v=0TrcQMz2lnk#t=1m9s

[Like its red counterpart, this rare cardinal relies on the carotenoids (organic pigments) in its diet to turn its feathers a bright yellow. But diet isn't everything: Research has shown that certain genes determine which of several carotenoids the bird deposits into its feathers and bare skin.]

[For instance, red cardinals synthesize their red hues from four yellow or orange pigments they consume, according to research published in the journal The Condor in 2003.]

[In that study, researchers found that the plumage of a yellow Northern cardinal collected in 1989 in Baton Rouge, Louisiana, didn't show any of the red carotenoids found in common Northern cardinals. Assuming the yellow bird had access to similar foods as the red-hued ones, the researchers concluded that this bird couldn't manufacture any of the four carotenoids typically found in a cardinal's red feathers. A genetic mutation, they said, knocked out the bird's ability to carry out the chemical reactions that would have led to red feathers.]
https://www.livescience.com/61897-rare-yellow-cardinal-alaba...

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[*] posted on 10-3-2018 at 04:34
A not very natural scenery


Im making a lot of Copper Acetylide for an upcoming project, this is a mixture of Cupric Chloride and Nickel Chloride that i have lazily let dry out over a couple of weeks before i separate it. It grew some nice structures and with the blue wall of my lab it looks like some kind of scenery.

IMG_20180310_121954.jpg - 2.7MB
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