Sciencemadness Discussion Board
Not logged in [Login ]
Go To Bottom

Printable Version  
 Pages:  1  ..  51    53    55  ..  72
Author: Subject: Pretty Pictures (2)
j_sum1
Administrator
********




Posts: 5573
Registered: 4-10-2014
Location: Oz
Member Is Offline

Mood: Taking opportunities to breathe.

[*] posted on 4-12-2016 at 04:49


I love the colour of Ti(III).
What is fun though is to add a little hydrogen peroxide. You get a very vivid complex formed (TI(IV) if I am not mistaken). It is a deep orange/blood colour. Difficult to describe but very interesting.

Edit. Here is a link to a not very good photo but it does give the idea,
https://www.sciencemadness.org/whisper/files.php?pid=447460&...

[Edited on 4-12-2016 by j_sum1]




View user's profile View All Posts By User
mayko
International Hazard
*****




Posts: 1098
Registered: 17-1-2013
Location: Carrboro, NC
Member Is Offline

Mood: anomalous

[*] posted on 9-12-2016 at 09:37


Chemical & Engineering News has a tumblr, and it is about as hoppin' as you'd expect:

http://cen.chempics.org/




al-khemie is not a terrorist organization
"Chemicals, chemicals... I need chemicals!" - George Hayduke
"Wubbalubba dub-dub!" - Rick Sanchez
View user's profile Visit user's homepage View All Posts By User
fluorescence
National Hazard
****




Posts: 285
Registered: 11-11-2013
Member Is Offline

Mood: So cold outside

[*] posted on 10-12-2016 at 06:29


So I tried making "Berlin Green" after I found a good explanation in an old book last week...well the result is not so green to me....



BG.jpg - 115kB




View user's profile View All Posts By User
Sulaiman
International Hazard
*****




Posts: 3139
Registered: 8-2-2015
Location: UK ... on extended Holiday in Malaysia
Member Is Offline


[*] posted on 10-12-2016 at 08:48


Quote: Originally posted by mayko  
Chemical & Engineering News has a tumblr, and it is about as hoppin' as you'd expect:

http://cen.chempics.org/


fantastic link, thanks ... just spent a couple of hours there :D




CAUTION : Hobby Chemist, not Professional or even Amateur
View user's profile View All Posts By User
The Volatile Chemist
International Hazard
*****




Posts: 1973
Registered: 22-3-2014
Location: 'Stil' in the lab...
Member Is Offline

Mood: Copious

[*] posted on 12-12-2016 at 18:07


Quote: Originally posted by fluorescence  
So I tried making "Berlin Green" after I found a good explanation in an old book last week...well the result is not so green to me....


Usually works fine for me. How concentrated are your starting solutions, and which did you pour into which?




View user's profile Visit user's homepage View All Posts By User
Amos
International Hazard
*****




Posts: 1349
Registered: 25-3-2014
Location: Yes
Member Is Offline

Mood: No

[*] posted on 20-12-2016 at 22:18


Some big boys

^DBEC86FC59AC5A5E3B0964E4789D6F87EFD312821CCC66FEBC^pimgpsh_fullsize_distr.jpg - 222kB

It's simply sodium sulfate that I got as a byproduct of making basic copper carbonate.




View user's profile View All Posts By User
crystal grower
National Hazard
****




Posts: 474
Registered: 3-1-2016
Location: Os Petrosum
Member Is Offline

Mood: Puzzled

[*] posted on 21-12-2016 at 03:18


Quote: Originally posted by Amos  
Some big boys



It's simply sodium sulfate that I got as a byproduct of making basic copper carbonate.


Sodium sulfate forms really amazing crystals. Unfortunately, I have no way to preserve them long-term.

[Edited on 21-12-2016 by crystal grower]




Elements collected:31/92
Last acquired: Co
Check out the ScienceMadness Wiki: http://www.sciencemadness.org/smwiki/index.php/Main_Page
Also make sure to check out my and hegi's website :) :
http://pieceofscience.com
Thanks.
View user's profile Visit user's homepage View All Posts By User
Velzee
National Hazard
****




Posts: 379
Registered: 19-8-2015
Location: New York
Member Is Offline

Mood: Taking it easy

[*] posted on 21-12-2016 at 07:08


Quote: Originally posted by Amos  
Some big boys



It's simply sodium sulfate that I got as a byproduct of making basic copper carbonate.


That's crazy




Check out the ScienceMadness Wiki: http://www.sciencemadness.org/smwiki/index.php/Main_Page

"All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident."
—Arthur Schopenhauer

"¡Vivá Cristo Rey!"
—Saint José Sánchez del Río
View user's profile View All Posts By User
m1tanker78
International Hazard
*****




Posts: 685
Registered: 5-1-2011
Member Is Offline

Mood: No Mood

[*] posted on 21-12-2016 at 18:12




crystal_tree.png - 453kB

I was about to toss this in the garbage can when these crystalline vines caught my eye. This was some leftover saturated sodium silicate that sat on the shelf for around a year.




Chemical CURIOSITY KILLED THE CATalyst.
View user's profile View All Posts By User
awlb2
Harmless
*




Posts: 27
Registered: 21-11-2016
Member Is Offline

Mood: No Mood

[*] posted on 22-12-2016 at 02:53


Needle-shaped calcium benzoate crystals, produced by reaction between saturated CaCl2 solution and saturated C6H5COONa solution. After one night these crystals fell out of solution due to low solubility.




DSC_0010.jpg - 1.9MB DSC_0009.jpg - 1.6MB
View user's profile View All Posts By User
Brain&Force
Hazard to Lanthanides
*****




Posts: 1297
Registered: 13-11-2013
Location: UW-Madison
Member Is Offline


[*] posted on 22-12-2016 at 10:33


A WHOLE FUCKING KILOGRAM OF EUROPIUM METAL.

<img src="http://i.imgur.com/M3OZCbg.jpg" width=800>

99.9%, stored in a glovebox. Sadly the storage was improper and thus it corroded. But who cares, we have a kilo of europium!




Raney nickel can't hydrogenate dank memes.
View user's profile View All Posts By User
Ozone
International Hazard
*****




Posts: 1269
Registered: 28-7-2005
Location: Good Olde USA
Member Is Offline

Mood: Integrated

[*] posted on 22-12-2016 at 10:59


WOW! How in the Holy Hell did you get your hands on *that*?

O3




-Anyone who never made a mistake never tried anything new.
--Albert Einstein
View user's profile View All Posts By User
MrHomeScientist
International Hazard
*****




Posts: 1805
Registered: 24-10-2010
Location: Flerovium
Member Is Offline

Mood: No Mood

[*] posted on 22-12-2016 at 11:01


Wow! You can make some expensive salts with all that. I bought 10g of Eu(NO<sub>3</sub>;)<sub>3</sub>*6H<sub>2</sub>O for $150 several years ago. Checking again today, it's up to $170. Sigma sells it for $350!
View user's profile Visit user's homepage View All Posts By User
violet sin
International Hazard
*****




Posts: 1361
Registered: 2-9-2012
Location: Back yard staring at stars
Member Is Offline

Mood: Good

[*] posted on 22-12-2016 at 13:17


WOW, indedd! Drooling just a little bit here. Thats one of the few I keep my eyes out looking for a deal, none good enough for my broke arse yet congrats, it's a pleasure just to see that much in one place



View user's profile View All Posts By User
aga
Forum Drunkard
*****




Posts: 7030
Registered: 25-3-2014
Member Is Offline


[*] posted on 22-12-2016 at 13:36


Erm, looks a lot like charcoal dunnit ?



View user's profile View All Posts By User
Brain&Force
Hazard to Lanthanides
*****




Posts: 1297
Registered: 13-11-2013
Location: UW-Madison
Member Is Offline


[*] posted on 24-12-2016 at 17:57


The europium isn't mine! Our lab acquired it from a Chinese supplier – much cheaper than getting it or its compounds from somewhere like Sigma-Aldrich. (Just look at how much a kilo of europium would cost from Sigma. I'd rather shoot myself.)

It looks more like petrified wood, I'd say.




Raney nickel can't hydrogenate dank memes.
View user's profile View All Posts By User
Mabus
Wiki Master
***




Posts: 234
Registered: 3-11-2013
Member Is Offline

Mood: Energetic

[*] posted on 26-12-2016 at 06:51


WHOA, that's a lot of europium there. Is the charcoal-like aspect from manufacturing? Like injection molding or something?



View user's profile View All Posts By User
fluorescence
National Hazard
****




Posts: 285
Registered: 11-11-2013
Member Is Offline

Mood: So cold outside

[*] posted on 27-12-2016 at 03:27


@Marbus: Probably because Europium is an Alkali Earth Metal. Eu and Ho especially are very much at the position of Strontium with all their properties and if you look at a picture of oxidized dentritic Strontium in comparison to Barium (which is darker) you see how similar Sr and Eu look. I'd have to take a closer look on the crystal structure but it's probably due to the way it was cleaned, distillation or chemical transport or something similar and then it grew in this shape.



View user's profile View All Posts By User
NitratedKittens
Hazard to Others
***




Posts: 131
Registered: 13-4-2015
Location: In the basket with all the other kittens
Member Is Offline

Mood: Carbonated

[*] posted on 28-12-2016 at 06:20


Quote: Originally posted by fluorescence  
@Marbus: Probably because Europium is an Alkali Earth Metal. Eu and Ho especially are very much at the position of Strontium with all their properties and if you look at a picture of oxidized dentritic Strontium in comparison to Barium (which is darker) you see how similar Sr and Eu look. I'd have to take a closer look on the crystal structure but it's probably due to the way it was cleaned, distillation or chemical transport or something similar and then it grew in this shape.

Europium is a rare earth metal, not alkali




Basket of kittens for you ........BOOM
View user's profile View All Posts By User
Tsjerk
International Hazard
*****




Posts: 2552
Registered: 20-4-2005
Location: Netherlands
Member Is Offline

Mood: Mood

[*] posted on 28-12-2016 at 07:12


Electron wise it is an earth alkali metal.
View user's profile View All Posts By User
DraconicAcid
International Hazard
*****




Posts: 3830
Registered: 1-2-2013
Location: The tiniest college campus ever....
Member Is Offline

Mood: Semi-victorious.

[*] posted on 28-12-2016 at 09:08


Quote: Originally posted by Tsjerk  
Electron wise it is an earth alkali metal.

The partially filled f subshell says otherwise.




Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
View user's profile View All Posts By User
fluorescence
National Hazard
****




Posts: 285
Registered: 11-11-2013
Member Is Offline

Mood: So cold outside

[*] posted on 31-12-2016 at 05:15


f-Orbitals don't really play a role for Eu(II), especially as Eu(II) has a quite stable config. with its f7. The electrons you work with are the 6s electrons. In a similar way Y(III) is pretty much the same as Ho(III). I worked a lot with both of them in my thesis and the crystal structures my compounds had were always pretty much the same for Y(III) and Ho(III) but different for Dy(III) and Er(III). I never worked with Eu(II) as my compounds required RE-Metal(III) but a colleague from our research group did a lot of Alkali Earth Silicate systems where he also used Eu(II) instead of for example Calcium or Strontium.

On the other hand the Alkali Earth Elements seem to crystallize in a different lattice than Eu does so I guess the structure is more or less due to the way it was processed.

[Edited on 31-12-2016 by fluorescence]




View user's profile View All Posts By User
fluorescence
National Hazard
****




Posts: 285
Registered: 11-11-2013
Member Is Offline

Mood: So cold outside

[*] posted on 31-12-2016 at 06:42


Forgot to bring in the acetic acid but really needed some today. So I scratched it out of the bottle to yield these nice transparent plates.
Looks really nice.



HAx.JPG - 92kB




View user's profile View All Posts By User
Geocachmaster
Hazard to Others
***




Posts: 146
Registered: 5-3-2016
Location: Maine, USA
Member Is Offline

Mood: Corroded, just like my spatulas

[*] posted on 31-12-2016 at 13:09


An hour and a half of crystallizing later and there are some long, beautiful crystals of salicylic acid, the camera doesn't do it justice. They are each 3-7 cm long.



IMG_0389.JPG - 1011kB
View user's profile View All Posts By User
fluorescence
National Hazard
****




Posts: 285
Registered: 11-11-2013
Member Is Offline

Mood: So cold outside

[*] posted on 1-1-2017 at 02:39


@Geocachmaster: Wow that looks really cool. I have some Salicylic Acid from the Merck Reagent series and it's a fine, clumpy powder, like flour. Really interesting how dramatically the shape can change.



View user's profile View All Posts By User
 Pages:  1  ..  51    53    55  ..  72

  Go To Top