| Pages:
1
2
3
..
76 |
bfesser
Resident Wikipedian
Posts: 2114
Registered: 29-1-2008
Member Is Offline
Mood: No Mood
|
|
Pretty Pictures (2)
<strong><a href="viewthread.php?tid=14644">Pretty Pictures (1)</a></strong> has been one of the most popular and certainly one
of the prettiest topics on the forum. After <em>40 pages</em>, however, it's time to start a new thread. [Certain forum features start
to become unwieldy.]
<hr width="80%" />
To start things off, here are a couple photos from Wikimedia that are just too pretty not to share:
<table><tr><td><a href="https://en.wikipedia.org/wiki/File:Gold-crystals.jpg" target="_blank"><img
src="https://upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Gold-crystals.jpg/250px-Gold-crystals.jpg" alt="crystalline gold" /></a>
<img src="../scipics/_wiki.png" valign="top" /></td><td><a href="https://en.wikipedia.org/wiki/File:Silver_crystal.jpg"
target="_blank"><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/5/55/Silver_crystal.jpg/250px-Silver_crystal.jpg"
alt="crystalline silver" /></a> <img src="../scipics/_wiki.png" valign="top" /></td></tr><tr><td
align="center"><a href="https://en.wikipedia.org/wiki/Gold" target="_blank">Gold</a> <img src="../scipics/_wiki.png"
/></td><td align="center"><a href="https://en.wikipedia.org/wiki/Silver" target="_blank">Silver</a> <img
src="../scipics/_wiki.png" /></td></tr></table>
|
|
|
kristofvagyok
National Hazard
Posts: 659
Registered: 6-4-2012
Location: Europe
Member Is Offline
Mood: No Mood
|
|
I know that these pictures have been posted, but for silver, I should reply with silver!
Something else: floating sodium balls in dioxane:
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." |
|
|
Oscilllator
National Hazard
Posts: 659
Registered: 8-10-2012
Location: The aqueous layer
Member Is Offline
Mood: No Mood
|
|
Here are a couple of my own:
Copper acetate, a copper salycilic acid complex (posted somewhere else aswell), a copper tetraamine complex and a steel bar I left in my forge a
little to long
I shall also take this opportunity to once again complain about the image size limits 
   
|
|
|
Hegi
Hazard to Others
Posts: 199
Registered: 27-9-2013
Member Is Offline
Mood: No idea.
|
|
Potassium ferrioxalate
I´m new a newcomer here, so hope that I will not screw up anything with adding this post. Few weeks ago I was trying to make my own iron complex.
This is the final product - potassium ferrioxalate. The size of the crystals is about 3-4 mm. 
|
|
|
Oscilllator
National Hazard
Posts: 659
Registered: 8-10-2012
Location: The aqueous layer
Member Is Offline
Mood: No Mood
|
|
Very nice Hegi! How did you make your ferrioxalate?
Welcome to science madness!
|
|
|
Hegi
Hazard to Others
Posts: 199
Registered: 27-9-2013
Member Is Offline
Mood: No idea.
|
|
Hi, I used iron(III) chloride hexahydrate and potassium hydroxide to make iron(III) hydroxide, then i dissolved it in oxalic acid - this was solution
A of ferric oxalate. Then I separately prepared solution B of potassium oxalate. I mixed it together, heated it up, partly evaporated the solvent
(water) and let it crystallize overnight 
|
|
|
Oscilllator
National Hazard
Posts: 659
Registered: 8-10-2012
Location: The aqueous layer
Member Is Offline
Mood: No Mood
|
|
Nice, you didn't use any hydrogen peroxide? lots of methods on the net use this to ensure the iron remains iron(III) and not iron(II).
|
|
|
Hegi
Hazard to Others
Posts: 199
Registered: 27-9-2013
Member Is Offline
Mood: No idea.
|
|
Quote: Originally posted by Oscilllator  | Nice, you didn't use any hydrogen peroxide? lots of methods on the net use this to ensure the iron remains iron(III) and not iron(II).
|
I forgot to mention it, I added few drops of 33% H2O2 
Maybe you´ll like this one too. 5 months growing copper(II) sulfate.
|
|
|
kristofvagyok
National Hazard
Posts: 659
Registered: 6-4-2012
Location: Europe
Member Is Offline
Mood: No Mood
|
|
A really easy, but awesome looking experiment: dissolving some fluorescein isothiocyanate in water under UV light.
[Edited on 29-9-2013 by kristofvagyok]
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." |
|
|
Hegi
Hazard to Others
Posts: 199
Registered: 27-9-2013
Member Is Offline
Mood: No idea.
|
|
| Quote: Originally posted by kristofvagyok | A really easy, but awesome looking experiment: dissolving some fluorescein isothiocyanate in water under UV light.
[Edited on 29-9-2013 by kristofvagyok] |
nice one man, what about exposure settings and used equipment?
Btw. This weekend I tried to make a crystal of ammonium iron(III) sulfate and it turned out to be beautifully and almost perfectly shaped.
[Edited on 30-9-2013 by Hegi]
<!-- bfesser_edit_tag -->[<a href="u2u.php?action=send&username=bfesser">bfesser</a>: removed
quoted image]
[Edited on 30.9.13 by bfesser]
|
|
|
Bezaleel
Hazard to Others
Posts: 444
Registered: 28-2-2009
Member Is Offline
Mood: transitional
|
|
Ammonium Iron(III) sulphate is one of the substances that formes large and well-shaped cystals very easily, as you have proved yourself. It is
sensitive to dry air though. Be careful, or some yellow powder will form on the cystal.
Is the crystal really that brownish, or is that just due to lighting conditions? The one I once made was much like light coloured amethyst.
|
|
|
Hegi
Hazard to Others
Posts: 199
Registered: 27-9-2013
Member Is Offline
Mood: No idea.
|
|
| Quote: Originally posted by Bezaleel | Ammonium Iron(III) sulphate is one of the substances that formes large and well-shaped cystals very easily, as you have proved yourself. It is
sensitive to dry air though. Be careful, or some yellow powder will form on the cystal.
Is the crystal really that brownish, or is that just due to lighting conditions? The one I once made was much like light coloured amethyst.
|
It´s just due to lighiting yes, it was captured few minutes after the sunrise.. I haven´t known about yellow powder forming on the crystal so now
it´s completely yellow -,- what is that yellow powder and how should I get the rid of it or ensure the crystal against forming it on its surface? ..
o.O
|
|
|
bfesser
Resident Wikipedian
Posts: 2114
Registered: 29-1-2008
Member Is Offline
Mood: No Mood
|
|
Keep it in a sealed container to prevent loss of water (<a href="https://en.wikipedia.org/wiki/Efflorescence"
target="_blank">efflorescence</a> <img src="../scipics/_wiki.png" />
or lacquer the surface, as some mineral collectors do. What you have is a crystal of <a
href="https://en.wikipedia.org/wiki/Ammonium_iron(II)_sulfate" target="_blank">ammonium iron(II) sulfate hexahydrate</a> <img
src="../scipics/_wiki.png" />, the powder he mentions would be the anhydrous salt.
[Edited on 3.10.13 by bfesser]
|
|
|
Mailinmypocket
International Hazard
Posts: 1351
Registered: 12-5-2011
Member Is Offline
Mood: No Mood
|
|
Vanillylidenacetone, from a micro synthesis, m.p. was ~123c, not bad! Pretty color
Edit: Crap... how do we re-size images? This is way too big.
[Edited on 3-10-2013 by Mailinmypocket]
|
|
|
bismuthate
National Hazard
Posts: 803
Registered: 28-9-2013
Location: the island of stability
Member Is Offline
Mood: self reacting
|
|
http://ts4.mm.bing.net/th?id=H.4696582266094371&w=216&am...
awesome osmium picture (sorry i can't paste the picture on the forum with my kindle)
|
|
|
Wizzard
Hazard to Others
Posts: 337
Registered: 22-3-2010
Member Is Offline
Mood: No Mood
|
|
Bismuthate - That crystal was made by my friend Ivan Timohkin, from periodictable.ru . I have some high-res of that, if his site doesn't.
|
|
|
bismuthate
National Hazard
Posts: 803
Registered: 28-9-2013
Location: the island of stability
Member Is Offline
Mood: self reacting
|
|
thats awesome! does he have an SM account?
|
|
|
bfesser
Resident Wikipedian
Posts: 2114
Registered: 29-1-2008
Member Is Offline
Mood: No Mood
|
|
| Quote: Originally posted by Mailinmypocket | Vanillylidenacetone, from a micro synthesis, m.p. was ~123c, not bad! Pretty color
. . .
Edit: Crap... how do we re-size images? This is way too big. |
<strong>Mailinmypocket</strong>,
that's a beautiful product! Very nice job sealing the ampoule (Pasteur pipette?); any chance you could post a tutorial—or a
video—on how you do that? I use pre-made ampoules when necessary, but I'm terrible at sealing them. Every attempt I've ever made at
glassblowing has been an utter failure. I'm a master at pulling TLC capillaries from melting point tubes, but anything beyond that is beyond me...
P.S. The image size is acceptable (doesn't stretch the page horizontally), but I can thumbnail it for you if necessary. It's best to upload images
as attachments.
[edit] P.P.S. I'll try again to ship the mpt. tubes out later today or tomorrow.
[Edited on 4.10.13 by bfesser]
|
|
|
Mailinmypocket
International Hazard
Posts: 1351
Registered: 12-5-2011
Member Is Offline
Mood: No Mood
|
|
Thanks! I tried to scale-up the reaction to have enough vanillylidenacetone to allow me to do a hydrogenation reaction to zingerone. Unfortunately
something went awry with the condensation, it didn't work and I haven't tried again.
The ampoule is actually just made of a segment of slightly larger than usual glass tubing (7mm). I have nothing to really do today so I would be happy
to post a step by step photo guide on making these. I find it easier to make nice solid ampoules with tubing rather than with Pasteur pipettes
actually.
Mini Photo Guide
[Edited on 4-10-2013 by Mailinmypocket]
|
|
|
Mailinmypocket
International Hazard
Posts: 1351
Registered: 12-5-2011
Member Is Offline
Mood: No Mood
|
|
Antimony, so shiny!
|
|
|
PeeWee2000
Hazard to Self
Posts: 58
Registered: 2-7-2013
Location: Michigan
Member Is Offline
Mood: No Mood
|
|
Some big old DMSO crystals :O!
“Everything is relative in this world, where change alone endures.”
― Leon Trotsky
|
|
|
mr.crow
National Hazard
Posts: 884
Registered: 9-9-2009
Location: Canada
Member Is Offline
Mood: 0xFF
|
|
Ohhh beautiful! Wish I had that for my element collection
Double, double toil and trouble; Fire burn, and caldron bubble
|
|
|
Hegi
Hazard to Others
Posts: 199
Registered: 27-9-2013
Member Is Offline
Mood: No idea.
|
|
|
|
|
froot
Hazard to Others
Posts: 347
Registered: 23-10-2003
Location: South Africa
Member Is Offline
Mood: refluxed
|
|
| Quote: |
Ohhh beautiful! Wish I had that for my element collection
|
I got this piece from a local solder manufacturer and it was cheap. These guys also do pewter alloys and use it for that, a good chance that solder
companies in your area will have some for you. They might also have samples of Pb, Zn, Bi, Cd and Sn to offer you and their purity is good.
We salute the improvement of the human genome by honoring those who remove themselves from it.
Of necessity, this honor is generally bestowed posthumously. - www.darwinawards.com |
|
|
Gooferking Science
Hazard to Self
Posts: 97
Registered: 17-7-2013
Location: Somewhere in Kansas, USA...
Member Is Offline
Mood: Halogenated
|
|
Half neutralized bromine water solution gives this beautiful color gradation effect.
[Edited on 11-10-2013 by Gooferking Science]
|
|
|
| Pages:
1
2
3
..
76 |
![[*]](images/xpblue/default_icon.gif){kind=icon}
