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Hegi
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[*] posted on 31-3-2014 at 11:47
Iron(II) sulfate heptahydrate


Been recrystallizing 1 kg of this compound and got nice crystals.. for more click here IRON SULPHATE CRYSTALS

<img src="http://chem.pieceofscience.com/wp-content/uploads/2014/03/2.jpg" width="900" height="597">




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copperastic
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[*] posted on 31-3-2014 at 11:57


How did you do this? I tried making crystals from iron II sulfate and the solution turned yellow. Im guessing from dissolved oxygen.



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Brain&Force
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[*] posted on 31-3-2014 at 11:58


Beautiful, Hegi, just beautiful! I tried making iron sulfate through replacement of copper sulfate and my crystals turned out a more greenish color rather than this aqua color.



At the end of the day, simulating atoms doesn't beat working with the real things...
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kristofvagyok
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[*] posted on 31-3-2014 at 14:40











After long-long time one of my compounds crystallized out. Sadly according to the recorded NMR spectra we are still not able to tell what is in the flask, but it still looks great.




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Hegi
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[*] posted on 31-3-2014 at 21:04


Quote: Originally posted by Brain&Force  
Beautiful, Hegi, just beautiful! I tried making iron sulfate through replacement of copper sulfate and my crystals turned out a more greenish color rather than this aqua color.


try to dissolve it in near boiling distilled water and add few milliliters of concentrated sulphuric acid, then let it overnight in fridge and you should be able to get that color. I´v been surprised too cause whenever I saw it before it was oxidized or rather hydrolyzed. ;)

Kristof - what is it suposed to be? ..




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[*] posted on 1-4-2014 at 01:26


Quote: Originally posted by Hegi  
Quote: Originally posted by NeonPulse  
Re-crystallizing some Trinitrophenol. Got a nice crop of well formed needle shaped crystals in the beaker....
:) i see alot of the pics here are of some type of crystalline formations. the silver metal on the copper wire look pretty neat. i tried the same but could not get decent close up pics.


What solvent did you use? ... I prepared today few grams of TNP and then dissolved it in warm ethanol.. so now I´m waiting for crystals..


I only dissolved the raw TNP in boiling distilled water to get a super saturated solution and very slow cooling the crystals grow as it cools. no solvent needed here. there are few helpful threads in the EM forum on this.




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HgDinis25
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[*] posted on 1-4-2014 at 11:58







My sample of bismuth. Love that metal.
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Zyklon-A
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[*] posted on 1-4-2014 at 12:12


Made from this? https://www.youtube.com/watch?v=uRyPG6iJyjI



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numos
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[*] posted on 1-4-2014 at 19:49


Reaction between ~3gm pyrotechnical grade Aluminum powder, and ~8-10 drops of Mg2O7.
Reaction delay: ~22 seconds

I put a series of pictures taken within 5 seconds. (Excluding first and last, to show start/end)

1.jpg - 119kB 2.jpg - 105kB

3.jpg - 10kB 4.jpg - 63kB 5.jpg - 44kB 6.jpg - 50kB 7.jpg - 52kB 8.jpg - 63kB 9.jpg - 74kB




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Oscilllator
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[*] posted on 5-4-2014 at 21:12


magnesium heptoxide?
I doubt it




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numos
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[*] posted on 5-4-2014 at 23:46


Quote: Originally posted by Oscilllator  
magnesium heptoxide?
I doubt it


Why do you doubt it? I'm not the best at videos, so I went for screenshots of the video, but just for you, I'll upload the video - which should clear any doubts.

http://youtu.be/h4AuUNRXo-o




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BlackDragon2712
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[*] posted on 6-4-2014 at 22:13


Quote: Originally posted by numos  
Quote: Originally posted by Oscilllator  
magnesium heptoxide?
I doubt it


Why do you doubt it? I'm not the best at videos, so I went for screenshots of the video, but just for you, I'll upload the video - which should clear any doubts.

http://youtu.be/h4AuUNRXo-o


'cause maybe you meant manganese heptoxide? Mn2O7?




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numos
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[*] posted on 6-4-2014 at 22:43


Quote: Originally posted by BlackDragon2712  
Quote: Originally posted by numos  
Quote: Originally posted by Oscilllator  
magnesium heptoxide?
I doubt it


Why do you doubt it? I'm not the best at videos, so I went for screenshots of the video, but just for you, I'll upload the video - which should clear any doubts.

http://youtu.be/h4AuUNRXo-o


'cause maybe you meant manganese heptoxide? Mn2O7?


oopsies... Your right. My bad. I feel silly, Mg and Mn:\



[Edited on 4-7-2014 by numos]




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[*] posted on 7-4-2014 at 01:03


I thought I'd try some Kristof/Hegi style photography... came out ok haha. Here is some Benzoic acid that i made by oxidising toluene via KMnO4

Benzoic acid.png - 544kB

[Edited on 7-4-2014 by HeYBrO]




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Hegi
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[*] posted on 7-4-2014 at 10:50


Quote: Originally posted by HeYBrO  
I thought I'd try some Kristof/Hegi style photography... came out ok haha. Here is some Benzoic acid that i made by oxidising toluene via KMnO4


nice try bro... I love that oxidation... fast and cheap way to produce your own benzoic acid..







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HeYBrO
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[*] posted on 7-4-2014 at 13:33


Quote: Originally posted by Hegi  


nice try bro... I love that oxidation... fast and cheap way to produce your own benzoic acid..



Thanks. I was going to edit the contrast and sharpness but i though against it. Looks much better, cheers. :)

[Edited on 7-4-2014 by HeYBrO]




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kristofvagyok
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[*] posted on 10-4-2014 at 14:59








Something special crystallized at the bottom of a flask, a cuneane based compound, what was obtained by the rearrangement of a cubane based molecule.

What is cubane and what is cuneane and what is this rearrangement? Cubane (1) is a square shaped and cuneane (2) is an wedge shaped molecule, both are strained.





For more information read this recently published article what was published by my supervisor:

Solvent-induced, selective rearrangement of hydrogen cubane-1,4-dicarboxylate to hydrogen cuneane-2,6-dicarboxylate
Gábor Durkó, István Jalsovszky
Tetrahedron, Volume 69, Issue 25, Pages 5160–5163




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Brain&Force
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[*] posted on 10-4-2014 at 16:02


Aw, come on! Nobody's going to top the brothers Hegedus!

I'm just wondering, kristofvagyok, what license, if any, do your photos fall under?




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Hegi
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[*] posted on 12-4-2014 at 09:45


Kristof, so epic, the picture and the molecule as well... high level organic chemistry.

Freshly prepared Mohr´s salt.





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[*] posted on 12-4-2014 at 21:28


Here is my first bromine isolation! I distilled it today from the reaction of NaBr+KMnO4+HCl. It has some water in it, but I don't really mind all that much, and I think it still looks really cool.

IMG_1205.jpg - 241kB
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Zyklon-A
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[*] posted on 12-4-2014 at 21:32


Nice! I've been isolating bromine several times this week, to find the cheapest method. Are you sealing it in an ampule?
[EDIT] Or is it in an ampule already? It's hard to see what kind of container it's in.

[Edited on 13-4-2014 by Zyklonb]




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[*] posted on 12-4-2014 at 22:04


Unfortunately, it's not in an ampule. It's just a normal vial with a teflon lined lid. It should keep it in, although I really wish I could have ampuled it.
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[*] posted on 13-4-2014 at 10:21


52 gram crystal of Aluminum potassium sulfate.

Crystal.JPG - 307kB
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Mailinmypocket
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[*] posted on 13-4-2014 at 10:56


Some recrystallized KClO3, cooled very slowly overnight in a beaker...wrapped in a towel and then placed in a thermos lunch box. Some crystals are hard to capture on camera but a few plates are the size of dimes. Beautiful :)
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[*] posted on 16-4-2014 at 18:16


Quote: Originally posted by Brain&Force  
I'm just wondering, kristofvagyok, what license, if any, do your photos fall under?
Attribution Non-commercial Share Alike (by-nc-sa)


And another picture:



Trying out a new UV lamp.

The mercury vapor lamp is placed in a double walled quartz tube what will serve as a water cooled, tempered UV light source, used for photochemistry.




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-Pictures from chemistry, check it out(:

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