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NedsHead
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I used the acid-base method greenlight, I had a small amount of WFNA I needed to get rid of and I diluted it in some water and neutralised it with 25%
ammonia solution, it's the best method I've tried so far, no filtering or recrystallising needed
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crystal grower
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My Vanadinite 
print screen windows
I know that it isnt first in this topic but its just avesome. 
[Edited on 10-1-2016 by crystal grower]
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crystal grower
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how to screen capture
Guess the name of this one 
HINT: Its mineral ,nothing artificial.
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mayko
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Nickel, cobalt, and copper salts in various stages of crystallization and drying:
A moonscape left by the crust of a drying phosphate solution:
The reaction of zinc and sulfur, and the sponge-shaped zinc sulfide residue:
btw, I'm working on organizing my photo files, and I'm planning on putting together a portfolio on Wikimedia Commons soon!
[Edited on 10-1-2016 by mayko]
al-khemie is not a terrorist organization
"Chemicals, chemicals... I need chemicals!" - George Hayduke
"Wubbalubba dub-dub!" - Rick Sanchez
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crystal grower
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Diamond grinding wheel under magnification.
image upload no compression
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The Volatile Chemist
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Nice photos mayko, what cobalt salt is that?
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crystal grower
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CopperII Sulphate (growth time: 2weeks)
[
Original post in chemicals for crystal growing.
[Edited on 21-1-2016 by crystal grower]
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The Volatile Chemist
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Quite a large crystal there. If you don't mind destroying it, dehydrating it in conc. Sulfuric acid might be interesting. Though of course that is a
nice crystal!
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crystal grower
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Quote: Originally posted by The Volatile Chemist  | | Quite a large crystal there. If you don't mind destroying it, dehydrating it in conc. Sulfuric acid might be interesting. Though of course that is a
nice crystal! |
Oh that would be too big sacrifice destroying this one.
I will maybe try it with smaller piece.
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MrHomeScientist
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Holy crap, 2 weeks? That's huge! I spent several months growing one that only ended up about an inch across. How did you grow yours?
Shameless plug: I did the crystal dehydration experiment and posted a video to my channel: https://www.youtube.com/watch?v=J1zwFwmANw4
It probably didn't take nearly as long as I left it for, but after going white the shape never changed!
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The Volatile Chemist
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| Quote: Originally posted by MrHomeScientist | Holy crap, 2 weeks? That's huge! I spent several months growing one that only ended up about an inch across. How did you grow yours?
Shameless plug: I did the crystal dehydration experiment and posted a video to my channel: https://www.youtube.com/watch?v=J1zwFwmANw4
It probably didn't take nearly as long as I left it for, but after going white the shape never changed! |
Your video's the only reason I knew sulfuric acid could dehydrate CuSO4. It's worth the watch. I'd be interested to see if it dehydrates
other compounds non-destructively, though I suppose they would have to be sulfates.
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crystal grower
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| Quote: Originally posted by MrHomeScientist | Holy crap, 2 weeks? That's huge! I spent several months growing one that only ended up about an inch across. How did you grow yours?
Shameless plug: I did the crystal dehydration experiment and posted a video to my channel: https://www.youtube.com/watch?v=J1zwFwmANw4
It probably didn't take nearly as long as I left it for, but after going white the shape never changed! |
Nice video.
Procedure:
1.make seed crystal (I think its not neccessary to explain.)
2.when u have seed crystal attached on a string take it out of solution.
3.heat the solution and saturate it.
4. Put the crystal inside and let it slowly cool down.
5.Take the crystal out of solution and heat it again
6.saturate it ,put crystal inside and repeat the procedure.
I hope it will help you
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arkoma
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CrystalGrower--they are AWESOME.
"We believe the knowledge and cultural heritage of mankind should be accessible to all people around the world, regardless of their wealth, social
status, nationality, citizenship, etc" z-lib
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crystal grower
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Thnx
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MrHomeScientist
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| Quote: Originally posted by crystal grower | Nice video.
Procedure:
1.make seed crystal (I think its not neccessary to explain.)
2.when u have seed crystal attached on a string take it out of solution.
3.heat the solution and saturate it.
4. Put the crystal inside and let it slowly cool down.
5.Take the crystal out of solution and heat it again
6.saturate it ,put crystal inside and repeat the procedure.
I hope it will help you |
Ah ha! So a more 'active' crystal growing process than usual, very nice. What sort of string do you use? I'd want something transparent with the same
refractive index as CuSO4, so it'd be invisible.
Thanks for liking my video everybody I need to get back to posting.
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crystal grower
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| Quote: Originally posted by MrHomeScientist |
Ah ha! So a more 'active' crystal growing process than usual, very nice. What sort of string do you use? I'd want something transparent with the same
refractive index as CuSO4, so it'd be invisible.
Thanks for liking my video everybody I need to get back to posting.
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Yeah I boost it a little
I use nylon string which is practically invisible.
But I must warn you, if you use this method, parasite crystals grow quite fast.(altough not always) and u must remove them carefully.
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fluorescence
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Had to prepare this at the University last week. Took a while to make it and only gave quite poor yield but it's really pure. The NMR for it is in the
General Question's NMR post. Quite interesting stuff but not for me, our iron-based chemist commissioned it for his research.
If some are interested I can translate our preparation method if I have more time. The smell is really unpleasend !
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crystal grower
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lump of pure antimony.
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gluon47
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detonation of MEKP.
kinda looks like a fire breathing dog if you examine closely.
reality is an illusion
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Detonationology
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Detonation? You would have to have a high speed camera to capture that. Perhaps you meant deflagration?
“There are no differences but differences of degree between different degrees of difference and no difference.” ― William James
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violet sin
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not 100% chem related, but it certainly opens doors
My dad had a nice gift for me. There was a storage container on his job site that the owner wanted cleaned out. 2x set of oxy/acet gauge, 2x welding
head, 3x oxy/acet hose pairs.
I also got a bunch of copper. A whole copper downspout, 6' section of gutter, some random flashing and 2' of 1" pipe. They were cleaning up a 3 year
project for a really wealthy man.
As you can see I have been leveling up my high temp ability
  
Disposable propane torches, refillable propane torch, disposable oxy/map, presto-o-lite acet/air torch with a few regulators n tips, 5x Oct/acet
hoses, 5x gauge valve, 4x welding heads, 1x cutting head, 1 B-tank acet, larger oxy/acet tank pair w/ cart. Not pictured is a box of gauges,
nitrogen/CO2 cylinder, and the lab bench top furnace w/ graphite crucible- Lindbergh solar basic.
Before registering here, I only had a disposable propane plumbers torch, and a newly acquired oxy/map pictured. Just goes to show what you can do
over the course of a couple years, I'd you keep watching for deals. ~300$ total spent on the pictured items, $150 was the big tanks, with two welding
heads, a cutting head, goggles, gauges, hose and the metal cart.
Done sourcing heat, next up shielding gasses.
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fluorescence
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Not really sure what it is but it's quite cool.
Very old literature (hard to find) talks about Berlin Green. Now since Berlin Blue is the German name for Prussian Blue it's the green version of it
but not Prussian Green since Prussican Green unfortunately is a name for mixture of Dyes. So Berlin Green should form, according to the literature I
use for my research on Cyanide chemistry by various methods, heating Prussian Blue in the dark, adding chlorine, nitric acid, ...
Now in the very old literature they talk about FeIII[FeIII(CN)6] but according to a paper I found that isn't the case
and there is no formula for this stuff. It's just an intermediate of possible oxidation states which is instable and will build prussian blue again.
Still it looks quite cool.
On the left is prussian blue at 12°C and on the right at boiling temperatures. Both contain conc. Nitric Acid. I'm not sure if the same happens if no
Acid is added but for the Acid thing it turns really bright green and if you leave it to cool for 10 min. it's blue again. I did it 3 times and it
always changes to green while hot and then back to blue although I think the more often you do it the longer it will stay green. At least it looks
quite different now than before.
Might try some other Oxidants tomorrow.
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BlackDragon2712
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some nice acetaminophen crystals
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Detonationology
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Beautiful diamond shaped crystals! What solvent are you using?
“There are no differences but differences of degree between different degrees of difference and no difference.” ― William James
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BlackDragon2712
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95% ethanol, I hope to be posting tomorrow my attempts in making 3-nitro-4-acetamidophenol via nitrous acid
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