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Lion850
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[*] posted on 26-10-2020 at 20:08


Hi CharlieA I paid Australian $30 for 500g thiourea (old stock). As far as I know the supplier I got this from does not ship overseas. Is thiourea hard to get in the US?
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Bmoore55
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[*] posted on 26-10-2020 at 20:47
SEM images of dendrites


Some really pretty dendrites taken from a sample submitted to my lab.

8767BED2-CB89-4357-878E-3C372DEA42ED.jpeg - 289kB
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Bedlasky
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[*] posted on 27-10-2020 at 20:02


Quote: Originally posted by CharlieA  
[rquote=647265&tid=26378
...I visited the supplier yesterday to get some thiourea... ...
[/rquote]

Out of curiosity, what would 10-50g of thiourea, shipped to the US, cost?


If you have access to ammonium thiocyanate, you can make thiourea by thermal decomposition of NH4SCN.

For test tube complex chemistry can be also used solution for cleaning silver which often contains thiourea.




If you are interested in aqueous inorganic chemistry look at https://colourchem.wordpress.com/main-page/

I can offer GC analysis of samples. Just U2U to me for more info.

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Lion850
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[*] posted on 27-10-2020 at 20:53


Something yellow-ish crystallising out of the red methanol solution as it slowly evaporates.

9D4F11B5-1713-4F7B-B104-DE3D007AB31F.jpeg - 2.5MB
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Bedlasky
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[*] posted on 27-10-2020 at 21:03


What compound is that?



If you are interested in aqueous inorganic chemistry look at https://colourchem.wordpress.com/main-page/

I can offer GC analysis of samples. Just U2U to me for more info.

"An old friend once told me something that gave me great comfort. Something he had read. He said that Mozart, Beethoven and Chopin never died. They simply became music." Dr. Robert Ford, Westworld
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Lion850
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[*] posted on 27-10-2020 at 21:49


Bedlasky it is an attempt to make nitratopentakis-tiokarbamatbismuth(III) nitrate [Bi(NO3)(CS(NH2)2)5](NO3)2. Thank heavens for copy and paste!

It is mentioned on the crystal growing wiki here:
https://en.m.crystalls.info/Nitratopentakis-tiokarbamatbismuth(III)_nitrate

While trying to find more details about this compound on the internet (I did not find exactly what I was looking for) I saw that some bismuth complexes are made using methanol as solvent. I then did two experiments (mixing thiourea and bismuth nitrate solutions), one using water and one using methanol. Water gave a red solution, this is slowly evaporating and so far staying red. Methanol gave a bright orange solution, which slowly became darker and more black as it was exposed to air, and now as it evaporates down in is becoming redder.
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Lion850
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[*] posted on 8-11-2020 at 01:22


Potassium ferricyanide crystal, it is still growing.

9AB7762E-C074-4E09-AC20-BED67A66FF8B.jpeg - 2.6MB
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j_sum1
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[*] posted on 14-11-2020 at 02:32




IMG20201114201856.jpg - 2.7MB


Probably a failure but really interesting nonetheless.
I am attempting to produce Zn powder by elecrolysis in alkaline medium.
Anode is a cast zinc sphere. Cathode is copper sheet now thickly coated in zinc (and not powdering off like I expected.)

The blue coating on the anode I presume is copper zincate. Not required but pretty.
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MidLifeChemist
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[*] posted on 14-11-2020 at 08:41


Quote: Originally posted by j_sum1  



The blue coating on the anode I presume is copper zincate. Not required but pretty.


It looks like a deep blue death star. Very interesting!
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arkoma
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[*] posted on 14-11-2020 at 13:37


With the exception of the piperine, these are shots of stuff that ends up "Where Beakers Go To Sit And Get Forgot About".


Piperine
IMG_20201114_151007_332.jpg - 327kB
Should be Lead Chloride. Had a beaker with a sat solution of Copper Chloride and chunks of lead in it on shelf for a month
IMG_20201114_151403_322.jpg - 344kB
The remnants of a 1940 something Mercury Dime in HNO3. Crystals of AgNO3 hard to see.
IMG_20201114_151243_124.jpg - 301kB
Mystery products from BenzylOH and Dichromate. Been sitting on shelf forever. Smells WoNDERFUL. Cherries.
IMG_20201114_151028_364.jpg - 349kB
A steel screw in a slotion of CuSO4. Grab bag of Cu powder and Iron Sulfate I reckon
IMG_20201114_151120_198.jpg - 362kB




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Fyndium
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[*] posted on 20-11-2020 at 10:53


I dug up my good old heating bath, and found that half of the liquor had crystallized into fancy formations. Did not know that calcium chloride can also look nice, as it's usually just caulky flakey gunk in big bags to be thrown on dirt roads.

bathpic.jpg - 234kB bathpic2.jpg - 221kB
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Fluorite
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[*] posted on 20-11-2020 at 13:02


Sodium zincate
NaOH and battery shell ugh I shouldn't touch it :(
cadmium blood test ASAP!

76949356_2174962066130897_3958102501189746688_o.jpg - 66kB
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[*] posted on 21-11-2020 at 16:33


Quote: Originally posted by Fluorite  
Sodium zincate
NaOH and battery shell ugh I shouldn't touch it :(
cadmium blood test ASAP!
:D

Enjoying the gorgeous red of bis-dimethylglyoximenickel(II), which appears to me like the colour of a raspberry-strawberry smoothie:

IMG_2923_adj_straight.JPG - 255kB

[Edited on 22-11-2020 by Bezaleel]
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greenlight
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[*] posted on 24-11-2020 at 07:55


Dirty old ice pack ammonium nitrate crystals.

[Edited on 24-11-2020 by greenlight]

Screenshot_20201124-235050_Gallery.jpg - 1.1MBScreenshot_20201124-235024_Gallery.jpg - 1.2MB




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[*] posted on 22-12-2020 at 15:52


Blue crystals are copper-calcium acetate (with white needles- that's calcium acetate). The orange liquid in smal bottles is dinitrogen tetraoxide/nitrogen dioxide.

Cu_Ca_Ac.jpg - 962kBCu_Ca_Ac2.jpg - 527kBNO2_N2O4.jpg - 668kB
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egret
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[*] posted on 25-12-2020 at 13:17


Steam distilled benzaldehyde.


_imgx.jpg - 237kB
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paulll
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[*] posted on 25-12-2020 at 17:57


Can't find a single tumbler in the place but luckily my hobby involves collecting glassware... Merry Christmas folks!

whisky.jpg - 52kB
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[*] posted on 26-12-2020 at 03:22


[MoOCl(H2O)4]+ solution in conc. HCl in volumetric flask. Concentration of Mo = 1,4 g/l.

IMG_20201226_105827.jpg - 2.1MB




If you are interested in aqueous inorganic chemistry look at https://colourchem.wordpress.com/main-page/

I can offer GC analysis of samples. Just U2U to me for more info.

"An old friend once told me something that gave me great comfort. Something he had read. He said that Mozart, Beethoven and Chopin never died. They simply became music." Dr. Robert Ford, Westworld
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[*] posted on 3-1-2021 at 06:24


Sulfamic acid crystal

Sulfamic_acid.jpg - 1.1MB
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roXefeller
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[*] posted on 3-1-2021 at 11:14


Solved the daughter's shark puzzle with a python script I wrote, called sharks_on_a_plane.py

SharksOnAPlane.jpg - 119kB




One must forego the self to attain total spiritual creaminess and avoid the chewy chunks of degradation.
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[*] posted on 5-1-2021 at 04:08


Winner of the thread!

This has been posted before in this thread: but so worth repeating.
https://labphoto.tumblr.com/tagged/portfolio

Credit to Kristof Hegadus, kristofvagyok
I doubt he is still active here and the tumblr is five years since last post.
But it is a gem that is not worth letting slide into the dark chasms of the internet.
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[*] posted on 18-1-2021 at 06:10


Phosphorescent materials based on alkaline earth sulfides and zinc sulfide

From left to right:
SrS:Eu
CaS:Eu,Ce,Tm
SrS:Bi
CaS:Bi,Ag
ZnS:Cu

I explain how I made them at the thread "making phosphorescent materials"


Sulfides 1.jpg - 2.5MB Sulfides 2.jpg - 1.7MB Sulfides 3.jpg - 2.3MB
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greenlight
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[*] posted on 18-1-2021 at 19:55


Quote: Originally posted by stibium  
Phosphorescent materials based on alkaline earth sulfides and zinc sulfide

From left to right:
SrS:Eu
CaS:Eu,Ce,Tm
SrS:Bi
CaS:Bi,Ag
ZnS:Cu

I explain how I made them at the thread "making phosphorescent materials"




Beautiful!




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Sulaiman
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thumbup.gif posted on 18-1-2021 at 21:37
Very nice


:cool::cool::cool:



CAUTION : Hobby Chemist, not Professional or even Amateur
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j_sum1
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[*] posted on 18-1-2021 at 22:57


Ok. I am indpired. I am going to have tobread that procedure.
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