Sciencemadness Discussion Board

Pretty Pictures (2)

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mesanaw - 18-6-2017 at 17:20

First is the silver mirror from Tollen's reagent made in an old-fashion Coke bottle.

EPA82JD.jpg - 776kB

Some Mohr's Salt I made.

8hkXN3q.jpg - 1.6MB

Copper Sulfate crystal still growing.

xEBh3iB.jpg - 625kB



fluorescence - 24-6-2017 at 23:01

The disatvantages to work with molten Potassium in test tubes :D

Kalium MoO3 265.jpg - 44kB

ficolas - 26-6-2017 at 06:44

Quote: Originally posted by Neme  
One picture is bunch of copper(II) acetate crystals.

In next pictures is my attempt to double phantom crystal, chrome alum crystal in chrome alum+ KAl alum mixture in KAl alum. The inner black crystal is not visible tho so it's more like normal phantom crystal.



Did you do anything especial for the copper acetate crystals? I havent been able to crystalice it That way, un dark big crystals. All I get are lots of small lighter ones. The biggest dark ones I got were like 2-3mm big. Probably because impurities, or temperature changes? I wanted to try making it in a thermos, as I dont think I can get it much purer. I recrystaliced the acetate I have like 3 times in attempt to get crystals like those.

And since this is the pretty pictures topic, here is the result of my last attemp:

jgOPR0w.jpg - 719kB
This one has copper wires fragments inside, because in one of the attemps I has the biggest (3mm) crystals grow con a copper wire, so I tried adding some.

[Edited on 26-6-2017 by ficolas]

Salt pyramids

Fulmen - 26-6-2017 at 09:13

Got these after concentrating a batch of sodium dichromate:
I'm suspecting it's sodium chloride (from the bleach). Hard to tell from the photos by they are hollow, inverted pyramids.
IMG_0877#3.JPG - 158kB

Another pic taken at an angle:
IMG_0880#3.JPG - 144kB

fluorescence - 27-6-2017 at 23:56

Inverted pyramids? They look like octahedra on the photo.

TheMrbunGee2 - 28-6-2017 at 05:50

Quote: Originally posted by ficolas  

Did you do anything especial for the copper acetate crystals? I havent been able to crystalice it That way, un dark big crystals. All I get are lots of small lighter ones. The biggest dark ones I got were like 2-3mm big. Probably because impurities, or temperature changes? I wanted to try making it in a thermos, as I dont think I can get it much purer. I recrystaliced the acetate I have like 3 times in attempt to get crystals like those.

[Edited on 26-6-2017 by ficolas]


You should dissolve your acetate in warm water, filter it and let it evaporate. Cooling hot solution may not give large crystals..

Neme - 30-6-2017 at 05:17

Quote: Originally posted by ficolas  
Quote: Originally posted by Neme  
...

...


Because of poor solubility of copper acetate in water, it takes very long to grow big crystal of it. The key is to let the saturated solution evaporate.

I made a bunch of saturated copper acetate solution by dissolving basic copper carbonate in acetic acid (BCC made from copper sulfate and sodium carbonate). I keep adding the solution to container with seed crystals and letting it slowly evaporate.

Geocachmaster - 3-7-2017 at 12:56

Today I recrystallized around 100g of erythritol from water, and over the course of a few hours some large and rather beautiful crystals grew.

Also I left a flask with methanol and dissolved boric acid in it on the bench for a few days. Upon cooling down most of the acid deposited on the walls of the flask, but very slowly a thin layer of crystals formed, attached to the walls and suspended about 1 cm about the stir bar. The crystals in this layer are in a branched pattern and look very cool.

Pictures: https://youtu.be/zbwy-PT3DUY
(I couldn't figure out how to resize them, I'll have to work on that)

mayko - 6-7-2017 at 17:25

Hot off the press, a never-before-published photograph of plutonium tetrafluoride! This was obtained by nuclear anthropologist Martin Pfeiffer via FOIA. It's a little disappointing (it is known as 'pink cake'; this is apparently misleading.) but upthread there are some very nice pictures of exotic things like plutonium trichloride
If you're on twitter and interested in nuclear history/technology/sociology, definitely check him out!

<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">BEHOLD INTERNET!<br><br>My 2nd novel contribution to OSINT: my long sought pic of PuF4 &#39;pink cake.&#39; <br><br>FOIA&#39;d for your enlightenment! <a href="https://t.co/tnJqUhN5kc">pic.twitter.com/tnJqUhN5kc</a></p>&mdash; Martin Pfeiffer (@NuclearAnthro) <a href="https://twitter.com/NuclearAnthro/status/883128593953378308">July 7, 2017</a></blockquote>
<script async src="//platform.twitter.com/widgets.js" charset="utf-8"></script>



[Edited on 7-7-2017 by mayko]

[Edited on 7-7-2017 by mayko]

fluorescence - 8-7-2017 at 13:41

Selfmade Sodium Ferrate(VI) solution:



vlcsnap-2017-07-08-18h08m48s141.png - 645kB

fluorescence - 28-7-2017 at 05:20

I have no clue what this is to be honest.
I was trying to react some Iodine with FeCO5 and thought this was an Iodine-Ethanol solution. Turns out and judging by the blue color this was actually with an indicator, I guess starch? So this is the moment where the two chemicals meet but don't react as they are in different phases.

vlcsnap-2017-07-28-15h16m08s199.png - 850kB

Texium - 28-7-2017 at 08:41

An intermediate product in the synthesis I'm doing at work currently, made via a Wittig reaction.

IMG_3666.JPG - 1010kB
Sure it's just a white solid, but I'm rather proud of the purity of it.

Loptr - 28-7-2017 at 08:56

Quote: Originally posted by zts16  
An intermediate product in the synthesis I'm doing at work currently, made via a Wittig reaction.


Sure it's just a white solid, but I'm rather proud of the purity of it.


That looks like a disilyl ether of methyl 3,4-dihydroxycinnamate? It's hard to see the backend of the bottle being visible as well.

What would the IUPAC name be for this compound? The TBS addition throws me off.

What is in store for this compound? What is the intended purpose of those silyl groups?

[Edited on 28-7-2017 by Loptr]

Velzee - 28-7-2017 at 09:04

Lead picrate I made a week or so ago, as well as a demonstration of K3CrO8 with sulfur, and a few grams of black powder + magnesium I made for July 4th:







[Edited on 7/28/2017 by Velzee]

Texium - 28-7-2017 at 09:40

Quote: Originally posted by Loptr  
Quote: Originally posted by zts16  
An intermediate product in the synthesis I'm doing at work currently, made via a Wittig reaction.


Sure it's just a white solid, but I'm rather proud of the purity of it.


That looks like a disilyl ether of methyl 3,4-dihydroxycinnamate? It's hard to see the backend of the bottle being visible as well.

What would the IUPAC name be for this compound? The TBS addition throws me off.

What is in store for this compound? What is the intended purpose of those silyl groups?
You're absolutely right. I think it would be something like methyl 3,4-bis(dimethyltert-butylsilyloxy)cinnamate, though I normally abbreviate it if I have to write it out. It's part of a series of reactions to make an anti-cancer drug, though I'm not sure if I can discuss the details publicly. The next reaction though will be reduction to the analogous cinnamyl alcohol using DIBAl-H. The silyl groups were added prior to the Wittig reaction and are just there as protecting groups. They will be removed at the end of the synthesis.

[Edited on 7-28-2017 by zts16]

The Volatile Chemist - 28-7-2017 at 16:14

It seems like pharma is the only way to go if you want to do synthetic organic chemistry, so I might have to go with a grad degree in pharmaceutical chemistry if I want to do that sort of stuff...looks fun though, zts16!

Geocachmaster - 30-7-2017 at 17:45

Wet copper (II) chloride crystals, along with a small amount of excess HCl, giving rise to CuCl42- and the green color.

CuCl2.jpg - 869kB

Morgan - 1-8-2017 at 12:30

Sodium bentonite clay that had some "continental drift" due to evaporation. Not a pretty picture but if you did it again in a larger pan and let it dry out, the image would be curious to see, with an artistic quality perhaps say if you had some separate in a long glass tube or something, the odd shapes it might make?
When it was saturated the thixotropic clay made a faint resonant sound when the bowl was tapped, or more apparent you could feel a ring to it.

DSC_0007 (1).JPG - 427kB

[Edited on 1-8-2017 by Morgan]

agent_entropy - 3-8-2017 at 03:47

Do drawings count?

A friend asked how cannabis plants make cannabinoids. I may have gone a little far in drawing my answer...

cannabinoid total biosynthesis.png - 407kB

Tollen's Reagent

agent_entropy - 3-8-2017 at 05:22

I kinda went wild with Tollen's reagent...
(I hope to sell these at the local flea market as art)

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Neme - 5-8-2017 at 02:46

These are amazing, what route and ratio did you use?

Hegi - 5-8-2017 at 10:50

Quote: Originally posted by Supersonic  
Quote: Originally posted by Amos  
Copper(II) formate crystals. Their supernatant is the deepest of royal blues and yet the crystals are an icy-looking aqua color.


Large crystals have a nice form and beautiful color.
It`s a pity that they erodes even in warm air.

There crystals were synthesed from copper(II) hydroxide and formic acid.





Those are really beuatiful copper formate crystals. Especially, the second one is really big and it seems to be nicely shaped. What technique did you use to grow it? I tried once but there was a problem with hydrolysis mostly and even in acidic environment the salt did not want to crystallize easily. :)

Velzee - 14-8-2017 at 11:52

Ascorbic acid residue

IMG_7443.jpg - 195kB

gluon47 - 9-9-2017 at 18:22



20170910_141556.jpg - 3.8MB 20170910_141450.jpg - 3.8MB

Nothing amazingly beautiful. Just some isopropyl propionate I made via Fischer esterification in my school's lab. 53% yield.

LearnedAmateur - 21-9-2017 at 07:10

Image 1: preparing copper hydroxide from impure copper sulphate solution, the black is copper oxide formed when the hydroxide is heated above 80C.
Image 2: dissolving the subsequent copper oxide in dilute sulphuric acid, reminds me of the sea floor. 'Scuse the leg.

The reason I did this was to purify the copper sulfate, producing it from the metal using H2SO4 and KNO3 creates water soluble byproducts which are removed by filtration.

H2SO4 + KNO3 -> KHSO4 + HNO3 {all aqueous}
Cu(s) + 4 HNO3(aq) -> Cu(NO3)2(aq) + 2 NO2(g) + 2 H2O(l)
Cu(NO3)2 + H2SO4 -> CuSO4 + 2 HNO3 {all aqueous}
Producing a solution containing CuSO4, KHSO4, and potentially residual KNO3

CuSO4(aq) + 2 NaOH(aq) -> Cu(OH)2(s) + Na2SO4
Cu(OH)2(s) + heat -> CuO(s) + H2O(l)
The alkali salts all remain in solution, and CuO is collected, readily reacting with acids unlike the base metal. The CuO can also be reduced to copper powder, useful if you start with a single piece like pipe and desire a large surface area.

IMG_0154.JPG - 699kB IMG_0165.JPG - 1.4MB

warteo - 4-10-2017 at 04:22

First post from me in a long time. Something very interesting too, check it out.

Two bottles, both containing quite similar looking compounds:

zmmxcy.jpg - 117kB

Change the lighting and ....

.
.
.
.


2q85z0n.jpg - 118kB

The first photo was taken under incandescent lighting, second photo is after the globe was changed over to a CFL.

In real life it's truly startling seeing the contents of the bottle change colour before your eyes when moving it between areas with different light sources.

On the left is Samarium acetate and at the right is Holmium acetate.

Sulaiman - 4-10-2017 at 06:42

Lovely photo's / effect.

Do you realise how much more complicated you have made life for
Periodic Table Of The Elements sample display makers ? :P

crystal grower - 7-10-2017 at 06:53

Have not posted in a "while" but anyway,
Silicon carbide crystals on a carbon rod:


IMG_20171007_164312.jpg - 1.1MBIMG_20171007_164349.jpg - 1.1MB

MrHomeScientist - 10-10-2017 at 09:25

That's awesome! Did you grow those SiC crystals yourself or how were they made?

crystal grower - 10-10-2017 at 10:14

Quote: Originally posted by MrHomeScientist  
That's awesome! Did you grow those SiC crystals yourself or how were they made?

My friend gave them to me.
They were made industrially in an electrical arc furnace where carbon is in the centre and SiO2 is put around to rise up resistance and to keep the outer part cooler than the core. I'm not exactly sure what they are actually making but the SiC is basically an unwanted byproduct.
I have more samples and they look really cool under microscope but unfortunately my microscope is out of service atm:D so I can't take a better photo.
Here's another one (photo taken with a cell phone).


IMG_20171010_195944.jpg - 1.9MB

symboom - 10-10-2017 at 14:25

Put electricity through the silicon carbide I heard it lights up blue

recrystallizing some Sodium t-butoxide

Shob dhillon - 10-10-2017 at 19:44

Today I decided to finally purify my sodium t-butoxide using hot T-butyl alcohol, after leaving it on the shelf for a few weeks.


IMG_20170909_092211.jpg - 923kB

mayko - 10-10-2017 at 20:14

I got a big polarized screen out of a busted monitor and I've been doing some filming with it. There's too many nice stills (and video) to post everything but here are some of my favorites:

Stress lines in gelatin:
IMG_20170916_bendyGel.jpg - 227kB

Water and corn syrup, with a layer of heavy corn syrup at the bottom:
IMG_20170917_RBFsunset.jpg - 530kB

Corn syrup flowing over & through glass beads:
IMG_20170920_drizzle1.jpg - 316kB IMG_20170921_drizzle2.jpg - 212kB

crystal grower - 10-10-2017 at 20:30

@Mayko Wow those are beautiful.

crystal grower - 10-10-2017 at 20:32

Quote: Originally posted by symboom  
Put electricity through the silicon carbide I heard it lights up blue

I've never heard about that. I'll try it.

symboom - 10-10-2017 at 22:13

Aha here is the video of silicon carbide its also used in leds
https://m.youtube.com/watch?v=MiHjPCzNxb8
https://m.youtube.com/watch?v=-b-BQZi7MvI

LearnedAmateur - 13-11-2017 at 08:12

Managed to grow this fluff ball out of the remains of nitric acid production (so about equimolar KHSO4 and KNO3 since I had a brain fart and used two molar equivalents of the latter). A pH strip indicates that it is primarily the bisulphate, and the strange thing was that it seemed to 'walk' of its own accord - a few smaller balls came first and then combined and migrated to the centre as the solution evaporated.

IMG_0349.JPG - 1.6MB

GaCl3

Chemcraft - 13-11-2017 at 08:45

Crystals of anhydrous gallium(III) chloride on the inside of the ampoule.

IMG_0239.JPG - 1.4MB

Texium - 15-11-2017 at 08:56



IMG_3959.JPG - 1.2MB IMG_3960.JPG - 1.2MB
Here's a couple pictures of some methyl 2,4-diTBSOcinnamate I made at work that crystallized as beautiful opalescent crystals.

Rhodanide - 17-11-2017 at 10:39

Left: Nitrous Acid soln.
Middle: Copper (Tetra) Dichloroisocyanurate, Disodium salt
Right: Hexaammine Nickel (II) Sulfate
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violet sin - 18-11-2017 at 00:37

So, stopped by the thrift store today on my way home from work..

IMAG2308.jpg - 1.2MB IMAG2307.jpg - 1MB

. Pt wire hell's yeah.

IMAG2310_1.jpg - 253kB

I made a small coil from ~2" of wire. If you hold a lighter to it for a brief moment, then let off the butane to extinguish the flames and then just resupply butane gas... The coil starts glowing and will eventually reignite the lighter. After just a couple times it had modified surface texture to a somewhat gritty appearance.

Regardless, I was exceedingly pleased I spent the time to stop in there.

IMAG2362.jpg - 988kB IMAG2363.jpg - 613kB

And then I went back... Gold and silver wire with ceramic coating. RTE wire element for some kind of temperature measuring device is what I'm able to find on them.

It is such a specific form of metal, it would be foolish not to buy for the low price. I'd imagine it's not cheap new.

[Edited on 19-11-2017 by violet sin]

j_sum1 - 18-11-2017 at 01:14

Score!

LearnedAmateur - 18-11-2017 at 04:33

Good old catalysis in action, I've seen similar demonstrations using methanol instead, where a heated platinum gauze is held over methanol and it remains glowing. Neat find though, I need to get myself some Pt wire, very useful stuff.

CaCl2 - 18-11-2017 at 06:11

A crystal of what I believe is cesium trisoxallatoferrate(III) dihydrate.

Probably the first pictures of the compound on internet.

It was grown in the bottom of the container, so it doesn't represent the crystal habit of the compound perfectly.


https://imgur.com/gallery/napw4



IMG_7867.JPG - 301kB

[Edited on 18-11-2017 by CaCl2]

hissingnoise - 18-11-2017 at 07:32

Quote:
After just a couple times it had modified surface texture to a somewhat gritty appearance.

This effect in Pt wire is called "bambooing" and can easily be felt by rubbing a finger lengthwise on the wire...

Further heating/cooling cycles will lead to visible nodules forming along the wire with thinner areas between (as in a bamboo stem) until the wire eventually breaks.

IIRC, there is a process to reverse the effect but its mechanism quite eludes me now.



OsO4

Chemcraft - 18-11-2017 at 10:06

Osmium tetroxide and osmium metal melted by electronic beam.

Osmium tetraoxide 09.JPG - 1MBOsmium tetraoxide 14.JPG - 1.1MBOsmium tetraoxide 01.JPG - 1.3MB

Bezaleel - 20-11-2017 at 10:36

Quote: Originally posted by CaCl2  
A crystal of what I believe is cesium trisoxallatoferrate(III) dihydrate.

Probably the first pictures of the compound on internet.
[Edited on 18-11-2017 by CaCl2]

Love that! Thumbs up!
On par or better than my trisethylenediammine nickel(II) iodide crystals (regarding rarity).

carbonium - 25-11-2017 at 18:05

Well not exactly a pretty pic, but found some of these thermometer switches while cleaning out an old lab. Any idea of their value?

[Edited on 26-11-2017 by carbonium]

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Rhodanide - 14-12-2017 at 07:02

Double recrystallized Nitroguanidine, formula CH4N4O2

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Hegi - 19-12-2017 at 07:28

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



Where did you get it?

plastics - 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

Hegi - 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...

Aluminium Copper Alloy

Σldritch - 21-12-2017 at 06:43



AluminiumCopperCrystals.jpg - 1.4MB

Hegi - 21-12-2017 at 07:33

Quote: Originally posted by Σldritch  


Nicely crystallized, could you please provide more info?

Σldritch - 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 .

TheNerdyFarmer - 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.

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Mandelbrot set

wg48 - 19-1-2018 at 07:14

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

Attachment: trip5.avi (6.9MB)
This file has been downloaded 736 times

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[Edited on 19-1-2018 by wg48]

violet sin - 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
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Suggestions for a legit use?

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

Melgar - 19-1-2018 at 17:49

Oh, hey, I know something about that.

violet sin - 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)
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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]

aga - 3-2-2018 at 11:37

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

noon.jpg - 36kB

CharlieA - 3-2-2018 at 16:38

That's an example of green chemistry, isn't it?

WouldSynthesizeForFood - 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]

violet sin - 21-2-2018 at 23:39


1)Thrift store find, another good book.
2) EBay purchase 5$ = 50 switches.
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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.

LearnedAmateur - 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.

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RogueRose - 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

crystal grower - 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?

Sulaiman - 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

LearnedAmateur - 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!)

violet sin - 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

Not quite sure what this is but it is beautiful

Vicarious3rdEye2 - 7-3-2018 at 17:51

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

The Volatile Chemist - 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.

Vicarious3rdEye2 - 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

Morgan - 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...


A not very natural scenery

Σldritch - 10-3-2018 at 04:34

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

LearnedAmateur - 10-3-2018 at 09:17

Looks like it would fit in very well with a model train set or diorama! Who would’ve known that something so inorganic could seem as if you’ve collected it straight from the outdoors, like some weird moss or fungus.

Pumukli - 10-3-2018 at 12:58

Have you ever tried sublimating benzoic acid in a pickle's jar?
After two days 8 g benzoic acid filled up the jar like this:

benzoic.JPG - 286kB

aga - 10-3-2018 at 13:06

Pyrolyse it, exactly as it is.

Either it will be simply destroyed, or you'll have an amazing substance.

The Jar will be a gonner.

[Edited on 10-3-2018 by aga]

DavidJR - 16-3-2018 at 15:18

Beautiful yellow crystals of p-benzoquinone.



p-benzoquinone.jpg - 1MB

DraconicAcid - 20-3-2018 at 15:54

1) Crystals of silver grown by reacting copper with silver nitrate solution on a microscope slide.

2) Vanadium(III) solutions with a) excess oxalate and b) excess glycinate.

Ag2.jpg - 318kBVandy.jpg - 311kB

Pumukli - 30-3-2018 at 10:39

Failed recrystallization attempt of MCPA.
The liquid separated into two layers upon cooling and after a few days in the cold crystals started to grow.
Then a few days later they grew through the layer seperating barrier into the other layer. It seemingly did not bothered them much. :-)

mcpacryst.jpg - 58kB

DavidJR - 4-4-2018 at 14:58

Accidental big crystals of potassium iron (iii) oxalate.

UNADJUSTEDNONRAW_thumb_1527.jpg - 119kB

crystal grower - 5-4-2018 at 07:05

First crystal of my CoSO4 solution prepared from CoCl2 + Na2CO3, then CoCO3 + H2SO4.
I'll try to make prettier crystals when the solution is all evaporated.

IMG_20180405_170144_489.jpg - 75kB

MrHomeScientist - 5-4-2018 at 07:48

Beautiful color!

crystal grower - 5-4-2018 at 08:11

Quote: Originally posted by MrHomeScientist  
Beautiful color!

Thanks, I like it too, reminds me of Garnet.
CoCO3 (I know It's not the actual formula) is also quite interesting :) even though it's just a bubbling mess inside of a beaker.


IMG_20180331_113334.jpg - 2.3MB

greenlight - 17-4-2018 at 01:38

Cleaning some sodium metal made using Nurdrages procedure.
This is on the third wash.
Looks so nice before it gets oxidized by atmospheric O2

[Edited on 17-4-2018 by greenlight]

20180417_160557.jpg - 2.2MB

Beauty of carbamide crystals

TheMrbunGee - 17-4-2018 at 04:05



IMAG1759.jpg - 4MB

DraconicAcid - 17-4-2018 at 08:39

I just made some salen. One of the simplest, quickest organic reactions I've ever done. Too bad the reaction of the ligand with copper acetate wasn't as nice.

salen.jpg - 66kB

crystal grower - 17-4-2018 at 08:58

Quote: Originally posted by TheMrbunGee  

Wow, they kind of reminds me of asbestos.

crystal grower - 17-4-2018 at 08:58

Quote: Originally posted by DraconicAcid  
I just made some salen. One of the simplest, quickest organic reactions I've ever done. Too bad the reaction of the ligand with copper acetate wasn't as nice.

Beautiful :).

mayko - 17-4-2018 at 20:40

The boiling flask at the end of a nitric acid distillation:

IMG_20180415_nitricDist.jpg - 194kB

Something that stood out was the remarkably stable vapor front that formed in the
condenser:

IMG_20180415_vaporFront.jpg - 231kB

Hegi - 19-4-2018 at 05:30

Quote: Originally posted by DraconicAcid  
I just made some salen. One of the simplest, quickest organic reactions I've ever done. Too bad the reaction of the ligand with copper acetate wasn't as nice.


Hey man! Where did you get reactants? ... I would like to make salen too and make complexes with several metals. Then write down some article about it. Thanks for any help .)

DraconicAcid - 19-4-2018 at 10:12

I work at a college, so I cheat- I can basically order anything I like as long as it's not too expensive and I intend to use it for educational purposes (not just my own).

Tsjerk - 19-4-2018 at 10:37

Not exactly salen, but close enough and with very OTC chemicals!

http://www.asianjournalofchemistry.co.in/User/ViewFreeArticl...

DraconicAcid - 19-4-2018 at 11:04

Quote: Originally posted by Tsjerk  
Not exactly salen, but close enough and with very OTC chemicals!

http://www.asianjournalofchemistry.co.in/User/ViewFreeArticl...

Cool- but I wonder if a 2:1 ratio would give a more salen-like chelate....

Hegi - 20-4-2018 at 12:17

Quote: Originally posted by DraconicAcid  
I work at a college, so I cheat- I can basically order anything I like as long as it's not too expensive and I intend to use it for educational purposes (not just my own).


My bad I left academic environment.. ;)

Hegi - 20-4-2018 at 12:19

Quote: Originally posted by Tsjerk  
Not exactly salen, but close enough and with very OTC chemicals!

http://www.asianjournalofchemistry.co.in/User/ViewFreeArticl...


I see yes, thiourea is cheap but what about salicylaldehyde, where can I get it? Any idea?

not so pretty picture

Sulaiman - 20-4-2018 at 13:54

As a part of my ongoing investigation into the corrosive effects of aqua regia fumes on common objects,
I submit the following annotated photograph.

AR.jpg - 2.6MB

The aqua regia is the green solution in the background,
the colour is due to gold and silver dissolved in the aqua regia.


DraconicAcid - 20-4-2018 at 13:58

I suspect that the green colour is due more to copper impurities in the silver and gold, since silver(I) ions are colourless and AuCl4- is orange-yellow.

Sulaiman - 20-4-2018 at 14:06

Quote: Originally posted by DraconicAcid  
I suspect that the green colour is due more to copper impurities in the silver and gold, since silver(I) ions are colourless and AuCl4- is orange-yellow.


D'oh !

Of course the colour is due to copper not silver - brain fart :(
-------------------------------------------------------------------------------
I've recovered gold from scrap many times
(but my total gold collected is only just over one gram)
and I love the colour of chloroauric acid in solution - like urine but with with a sheen.

[Edited on 20-4-2018 by Sulaiman]

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