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ItalianChemist
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[*] posted on 30-10-2012 at 07:05


This is a photo of about two grams of manganese(III) acetylacetonate prepared by manganese(II) sulfate and acetylacetone. The oxidation to Mn(III) was carried out using potassium permanganate

IMG_2198 copia.JPG - 53kB
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Hexavalent
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[*] posted on 30-10-2012 at 09:51


Very nice, Doug!

What be you distilling?




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kristofvagyok
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[*] posted on 30-10-2012 at 12:15




Left side: my starting material, a highly substitued pyrrole (also prepared by me), right side: the compound what I have made from it. Both are under UV.




I have a blog where I post my pictures from my work: http://labphoto.tumblr.com/
-Pictures from chemistry, check it out(:

"You can’t become a chemist and expect to live forever."
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Hexavalent
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[*] posted on 30-10-2012 at 12:35


Bloody hell, that's pretty amazing, kristof.

What are the details of the compounds you used?




"Success is going from failure to failure without loss of enthusiasm." Winston Churchill
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DougTheMapper
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[*] posted on 30-10-2012 at 16:49


Quote: Originally posted by Hexavalent  
Very nice, Doug!

What be you distilling?


Just running a finishing pass on about .750L of fresh HNO3 to bring it to 68% azeotropic. The sulfuric acid was used in the initial run in conjunction with a whole bunch of CAN fertilizer.




Victor Grignard is a methylated spirit.
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weiming1998
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[*] posted on 1-11-2012 at 05:21



http://www.flickr.com/photos/89521313@N06

This is a picture of NO2 dissolved in chloroform. At room temperature, it is this bright yellow colour, which turns to a deep orange at higher temperatures.

My photography skills are crap, but I still think this is pretty good.

Edit: Directly posting the image somehow doesn't work, so I changed that to a link.

[Edited on 1-11-2012 by weiming1998]
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White Yeti
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[*] posted on 1-11-2012 at 12:58


Here are chlorine bubbles through olive oil. This was my attempt to isolate chlorine gas by electrolysis. I was hoping that olive oil would be inert enough not to react too much with chlorine, but it ended up reacting anyway. If you look closely at the top of the column, you'll see white streaks where the oil reacted with the chlorine. At the beginning, the oil was perfectly clear.

[edit] the additional picture is not pretty, but I included it to show the extent of the chlorination.
IMG_0851downsize.jpg - 954kB IMG_0850downsize.jpg - 968kB

[Edited on 11-1-2012 by White Yeti]




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[*] posted on 1-11-2012 at 13:58


That is really cool yeti! I might try that just for fun! :P



The Home Chemist Book web page and PDF. Help if you want to make Home Chemist history! http://www.bromicacid.com/bookprogress.htm
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[*] posted on 1-11-2012 at 14:09


Wtf? Oleic chloride?



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Mailinmypocket
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[*] posted on 2-11-2012 at 10:45
Time for Tin! (again)


I made more tin crystals from an acidic solution of tin chloride- normally you add granular zinc to the solution to start the reaction and create the "floating tin sponge"

This time I wanted to try with a zinc rod which was too heavy for the bubbles to lift, It made a beautiful tin tree type thing.

The solution is ~0.5 M in SnCl2 and 2 M in HCl

tin1.JPG - 90kB tin2.PNG - 344kB tin3.PNG - 345kB
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UnintentionalChaos
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[*] posted on 2-11-2012 at 11:03


Quote: Originally posted by Eddygp  
Wtf? Oleic chloride?



Addition of Cl2 across the double bonds in the triglycerides.




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Eddygp
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[*] posted on 2-11-2012 at 11:30


Quote: Originally posted by UnintentionalChaos  
Quote: Originally posted by Eddygp  
Wtf? Oleic chloride?



Addition of Cl2 across the double bonds in the triglycerides.

Oh yeah, now it makes sense. By the way, what a pretty tin picture, that last one he made.




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Mailinmypocket
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[*] posted on 2-11-2012 at 17:07


I wish I had something better than an iPhone5 to take pictures, every time I try to show you guys something it turns out shittier than my eyes see it! Thanks though :)
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White Yeti
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[*] posted on 2-11-2012 at 17:22


It's not bad Mailin'. [Brace yourself for constructive criticism:D] one parameter you could improve is the lighting.
The more light available for the picture, the better it tends to turn out. Just make sure you don't go overboard either.




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Mailinmypocket
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[*] posted on 2-11-2012 at 17:28


Quote: Originally posted by White Yeti  
It's not bad Mailin'. [Brace yourself for constructive criticism:D] one parameter you could improve is the lighting.
The more light available for the picture, the better it tends to turn out. Just make sure you don't go overboard either.


Not bad- could be better :P I actually did the reaction on a windowsill thinking that the bright daylight would show off the crystals more, but it didn't, so I had to use flash which made it.... Okay.

iPhone are not the masters of photography I have to admit, next time I will try a light behind me or something. I plan to grow some electrolytic tin crystals, but I will figure out my lighting before I do it, for sciencemadnesses' sake ;)

Thanks for the criticism though, I love taking pictures of what I do, I just need to perfect doing it with what I have!

[Edited on 3-11-2012 by Mailinmypocket]
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White Yeti
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[*] posted on 2-11-2012 at 19:40


Taking pictures is a rather subjective process, everyone has their own style. I like to get light to come in through the side. But in some cases, I don't have the choice, and I need to use flash. This might have been the situation you ran into.



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[*] posted on 5-11-2012 at 15:41


Carborundum (silicon carbide), and it's fairly old container. Very hard and extremely shiny little bits- glass can easily be scratched with a granule of this stuff...



carbo2.JPG - 191kB
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[*] posted on 8-11-2012 at 04:54


Here is a video I made that demonstrates precipitating gold from chloroauric acid solution using boiling oxalic acid as the precipitant;

http://m.youtube.com/watch?v=o165tgxFMYM

Kadriver
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[*] posted on 13-11-2012 at 04:27
Fine Silver 5 Troy Ounce Bars


Bathing in dilute sulfuric acid to remove all traces of flux from the melt.

Each of these bars weigh between 5.020 and 5.040 troy ounces.

P1200618a.jpg - 199kB
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kadriver
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[*] posted on 13-11-2012 at 04:38
Stamped Bar


After having the fine silver crystals (grown in my electrolytic silver cells) assayed by NTR Metals, I hand stamp the bars.

These sell on Ebay for 5 to 10 percent over spot price.

After Ebay fees, I net right at spot for each of these bars.

kadriver

P1210770a.jpg - 187kB
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kadriver
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[*] posted on 13-11-2012 at 04:48
Platinum Leach from Catalytic Converters


Here is a shot of some platinum and palladium in solution from leaching automotive catalytic converters in hydrochloric acid and clorox.

The solution is course filtered via gravity first using several coffee filters to remove large particulate from the solution.

Then it is filtered a second time using vacuum assist through a whatman number 5 fine filter paper.

kadriver - Edited once to correct a spelling error.

P1210777a.jpg - 165kB

[Edited on 13-11-2012 by kadriver]
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kadriver
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[*] posted on 13-11-2012 at 05:01
Platinum Group Metals Mixed Black Powder


This is the platinum group metals that have been cemented (precipitated) using pure zinc metal shavings.

The zinc shavings were added to the platinum/palladium solution and the metals "cement" into the zinc trading places as the zinc goes into solution, and the platinum groups metals precipitate out of the solution.

See "electromotive series" or "replacement series" for an explaination of how this works.

These mixed (platinum, palladium, and probably rhodium) black powders are pure metal. But they will need to be refined (seperated) from each other using some complex chemistry (of which I know very little).

kadriver

P1210800a.jpg - 156kB
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[*] posted on 13-11-2012 at 05:25
Pure Gold Bar 1.7 Troy Ounce 99.5% Pure


Here is a pure gold bar that I produced using chemistry and metalurgy to remove impurities from the gold (10k and 14k scrap jewelry).

The scrap gold was alloyed with scrap 925 silver then treated with dilute nitric acid to dissolve most of the base metals - nitric acid will not dissolve gold, but it will dissolve out the base metals.

The resulting gold was then dissolved using a mixture (4 to 1) of 31.45% hydrochloric acid (from Lowes) and concentrated (68%) technical grade nitric acid.

After removing any excess nitric acid and filtering, the pure gold powder was precipitated out of solution using a saturated, and filtered solution of sodium metabisulfite.

There is a tiny bit of contamination seen as tiny bumps and irregularities on the surface of the bar to the left.

To get this bar up to spec, I would have redissolved the gold powder in hydrochloric acid and clorox (from the Dollar Store), then precipitated again using boiling oxalic acid (99.9% ACS) to produce a bar in the range of 99.99% purity.

This bar was sold to a big refinery, so I did not waste the time and chemicals to refine it all the way to industry standards of 99.95% purity.

Thanks for looking.

kadriver

P1220040a.jpg - 125kBP1220046a.jpg - 236kB
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[*] posted on 13-11-2012 at 05:35


Quote: Originally posted by kadriver  
Here is a video I made that demonstrates precipitating gold from chloroauric acid solution using boiling oxalic acid as the precipitant;

http://m.youtube.com/watch?v=o165tgxFMYM

Kadriver


I posted the above using an ipad and it does not work with a PC.

Here is the link that will work with a PC;

http://www.youtube.com/watch?v=o165tgxFMYM

Thanks for looking.

kadriver
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[*] posted on 14-11-2012 at 11:59


I2 that has been melted under air and then solidified (I was recrystallizing it and had to stop)

[Edited on 14-11-2012 by Pyro]

I2.jpg - 193kB




all above information is intellectual property of Pyro. :D
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