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Author: Subject: Pretty Pictures (2)
JnPS
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[*] posted on 3-2-2017 at 17:15


I loved the green color of chlorophyll dissolved in ether, also this is a picture of the biggest copper sulfate crystal i have grown to date, the picture's a bit bad but I have a video showing off the crystal on twitter, and the last photo is my recrystallized paracetamol crystals ^.^

Chlorophylls.JPG - 740kB CS crystal.JPG - 658kB Paracetemol Crystals.JPG - 1MB
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JJay
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[*] posted on 3-2-2017 at 17:36


That is some clean-looking paracetamol!



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[*] posted on 5-2-2017 at 19:59


IMG_0465.JPG - 1.1MB

Accidental 'hot ice'! Cool looking crystals after boiling down sodium acetate solution. Brown/yellow(ish) color is from organic impurities, thanks to the vinegar I used making it.

image.jpg - 1.1MB

Woah, the top turned white while I was writing this.


image.jpg - 923kB

And after breaking up

[Edited on 2/6/2017 by Geocachmaster]
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crystal grower
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[*] posted on 6-2-2017 at 03:53


That white crystals on second pic may be leftover sodium carbonate if stoachiometric amounts weren't used.
The same thing sa as interfering my first try on hot ice as it wouldn't let the solution to supersaturate.
Nice pics by the way :).

[Edited on 6-2-2017 by crystal grower]




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Geocachmaster
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[*] posted on 6-2-2017 at 07:21


I don't think it was sodium carbonate because I used an excess of vinegar; I'd rather suffer through boiling acetic acid into the room than have contamination. I'll check later for any carbonate contamination though.
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crystal grower
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[*] posted on 6-2-2017 at 07:51


Quote: Originally posted by Geocachmaster  
I don't think it was sodium carbonate because I used an excess of vinegar; I'd rather suffer through boiling acetic acid into the room than have contamination. I'll check later for any carbonate contamination though.

I may be wrong, it just resemble me my experiment.




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[*] posted on 7-2-2017 at 09:16


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.
files.php.jpg - 1.7MB

Hi Amos, how did you prepare it? Just dissolved (basic) copper carbonate in formic acid?

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Amos
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[*] posted on 7-2-2017 at 09:59


Quote: Originally posted by Bezaleel  
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.

Hi Amos, how did you prepare it? Just dissolved (basic) copper carbonate in formic acid?



Yep, simple as that. The crystals form lightning fast if you leave a saturated solution of it alone, very easy.
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[*] posted on 11-2-2017 at 23:28
Reduction of KMnO4






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MrHomeScientist
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[*] posted on 13-2-2017 at 08:32


Dwarvensilver, looks like you reduced it all the way down to nothing!
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crystal grower
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[*] posted on 13-2-2017 at 10:15


Yep, massive reduction :D.



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fluorescence
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[*] posted on 24-2-2017 at 05:44


1 L Flask with lots of prussian blue on the bottom.

pb.jpg - 97kB

95% of the stuff I do is based on transition metals and I'd say 40-50% is cyanide based. So automatically blue Cyano-Iron phases like prussian blue should form when the wastes are combined.

But there is another reason why this is so much. I use this flask for the wastes I produce in the lab. It is in an old aquarium in case it leaks or breaks and contains a month's or two months' amount of waste to settle. Added is always some Ferri(o)cyanide, DMG, Hydroxides etc to bind most of the wastes. It settles down and only the clear solution is decanted off into secondary containers. So in case one of the waste bottles breaks there isn't much heavy metal in there. So jus working with Iron salts will produce a lot of prussian blue in the end but it looks quite nice. Used to be a blue solution and now after a few months it is all settled.




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[*] posted on 24-2-2017 at 19:46


Here's some nice crystals of phthalic anhydride I got from a recrystallization.

7FoJXi0.jpg - 915kB

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[*] posted on 2-3-2017 at 12:17


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.



DSCN3271.jpg - 377kB DSCN3285.jpg - 604kB IMG_20161219_230832.jpg - 392kB IMG_20161219_230836.jpg - 409kB
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[*] posted on 9-3-2017 at 09:43


Another try to film the mysterious blue-green gas in potassium reactions:

http://imgur.com/zCVaKoA


For a while now I filmed dozens of reactions involving potassium in other solvents besides water to slow down the reaction it usually shows. Originally Thunderf00t pointed out that in the reaction with water under inert gas atmosphere a blue gas forms.

I looked at so many of these reactions now and quite often this blue-green gas really is involed in the reaction. It leads me to believe that maybe potassium reacts or more burns from a gas phase and not as an element. I've seen for example quite often two differently colored flames in narrow and high flasks one that burns longer way above the metal which should be hydrogen and then a pale flame with the color of potassium which burns or more glows around the metal as it becomes smaller and smaller in water.

Funnily whenever I add an oxidized sample the water or acid would first react with the upper layer making it a shiny oxide-free ball. But always shortly before and after it either combusts or starts to melt, glow, burn etc. I've noticed the metal becoming either dark on its surface or form a blue-green gas around the metal itself which then burns instead of the metal. And I've checked this in literature as well while a K2 is very unlikely at these temperatures small nano-potassium particles are blue, too. So maybe the potassium reacts by forming fine nano particles which then react to fast that it appears like a burning cloud around it.

In the picture you can see a small lump of potassium which suddenly (1/30th of a second) turns all black then reacts (note that the gas burns above the metal) and afterwards shows a green-blue gas (some frames later this gas catches fire and the whole thing starts to glow).

I've had better ones before maybe I'll make a small collection of all these gases and upload it here.




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[*] posted on 17-3-2017 at 07:28


Hopefully some RuO4 (video will come soon on YT).
Distilled some RuCl3 with H2SO4 and KMnO4.

vlcsnap-2017-03-17-16h24m23s135.png - 918kB




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[*] posted on 18-3-2017 at 07:08


I got a spectrometer and decided to compare the emission spectrum of mercury with that of a fluorescent lightbulb. Looked like a pretty good match to me!


IMG_8796.JPG - 509kB 5FF072BE-239F-4BBE-9119-FEBD32276914-1882-000002493EA1E0FC_tmp.png - 38kB




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[*] posted on 18-3-2017 at 09:04


Guess how i made this RB flask scrap?


Photo0031.jpg - 277kB



[Edited on 18-3-2017 by Waffles SS]
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[*] posted on 21-3-2017 at 11:09


Not fully reacted yet but a mixture of

[RuVIO2Cl4]2- and [RuIVOCl10]4-

Ru.jpg - 31kB




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