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

Printable Version  
 Pages:  1  2    4  5
Author: Subject: sharing Awesome Chemical Pictures (Read first comment)
Tsjerk
International Hazard
*****




Posts: 1662
Registered: 20-4-2005
Location: Netherlands
Member Is Offline

Mood: Mood

[*] posted on 26-3-2019 at 10:49


I LOVE this topic, I envy you guys. I think I might have some picture that could possibly be shared here, I will have a look. But I wanted to share that I think these samples look absolutely astonishing!
View user's profile View All Posts By User
Chem Science
Hazard to Self
**




Posts: 76
Registered: 30-7-2018
Member Is Offline


[*] posted on 26-3-2019 at 17:33


Nice crystal !!! DrScrabs, super nice. The best gif you can give to someone :)
here's some other samples.

SAM_5669.JPG - 1.7MBSAM_5678.JPG - 1.5MBSAM_5670.JPG - 1.7MBSAM_5664.JPG - 1.7MB
View user's profile View All Posts By User
monolithic
Hazard to Others
***




Posts: 146
Registered: 5-3-2018
Member Is Offline

Mood: No Mood

[*] posted on 26-3-2019 at 17:50


Quote: Originally posted by Chem Science  
These two are very obvious when they are side by side like these :)


Is one of them an aldehyde?

[Edited on 27-3-2019 by monolithic]
View user's profile View All Posts By User
Chem Science
Hazard to Self
**




Posts: 76
Registered: 30-7-2018
Member Is Offline


[*] posted on 26-3-2019 at 18:02


Quote: Originally posted by monolithic  
Quote: Originally posted by Chem Science  
These two are very obvious when they are side by side like these :)


Is one of them an aldehyde?

[Edited on 27-3-2019 by monolithic]

Noup .. They are chromium compounds !!
View user's profile View All Posts By User
DraconicAcid
International Hazard
*****




Posts: 3088
Registered: 1-2-2013
Location: The tiniest college campus ever....
Member Is Offline

Mood: Semi-victorious.

[*] posted on 26-3-2019 at 18:06


A chromate and a dichromate, obviously.



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
Chem Science
Hazard to Self
**




Posts: 76
Registered: 30-7-2018
Member Is Offline


[*] posted on 27-3-2019 at 02:20


Here are some more compounds :)





[Edited on 27-3-2019 by Chem Science]

SAM_5677.JPG - 1.6MB

[Edited on 27-3-2019 by Chem Science]

SAM_5679.JPG - 1.8MBSAM_5666.JPG - 2MB
View user's profile View All Posts By User
Chem Science
Hazard to Self
**




Posts: 76
Registered: 30-7-2018
Member Is Offline


[*] posted on 27-3-2019 at 06:00


Here are some FLuorine Organic Compounds !! :)

SAM_5672.JPG - 1.6MBSAM_5673.JPG - 1.7MBSAM_5674.JPG - 1.8MBSAM_5675.JPG - 1.1MBSAM_5676.JPG - 1.5MB
View user's profile View All Posts By User
woelen
Super Administrator
*********




Posts: 6838
Registered: 20-8-2005
Location: Netherlands
Member Is Offline

Mood: interested

[*] posted on 27-3-2019 at 08:09


Where do you get all those compounds? The SCl2 and S2Cl2 can be made by home chemists with some care and effort, but all the other stuff is really uncommon. You really have access to special chemicals! Very nice!



The art of wondering makes life worth living...
Want to wonder? Look at https://woelen.homescience.net
View user's profile Visit user's homepage View All Posts By User
Chem Science
Hazard to Self
**




Posts: 76
Registered: 30-7-2018
Member Is Offline


[*] posted on 27-3-2019 at 09:47


Yes the SCl2 and S2Cl2 are easy, the SnCl4 i made it thanks to a SM post <3 The other one are thanks to some years of work in the university, i want to put them to nice use, so another reason for the post is to see if there is some kind of experiment that will be useful for someone with some of these i can carry out.. Yea som rare ones but who knows, maybe i can make a fluorinated tertiary alcohol for the sodium project, i dont think it's needed but it an example.
View user's profile View All Posts By User
beta4
Harmless
*




Posts: 9
Registered: 3-2-2019
Member Is Offline


[*] posted on 28-3-2019 at 15:37


phosphors-ambient.jpg - 329kB
phosphors-uv.jpg - 380kB

From left to right, ZnS:Ag, ZnS:Mn, ZnS:Cu phosphors that I synthesized recently.

The ZnS:Ag emits a blue glow, but is so faint that the camera doesn't pick it up. I'm still trying to figure out what's wrong (maybe it's not that sensitive to 400nm UV light?).

The ZnS:Mn has been made with likely Fe-contaminated MnSO4, and has many dead spots. I'll need to recrystallize the MnSO4 and try again.
View user's profile View All Posts By User
Chem Science
Hazard to Self
**




Posts: 76
Registered: 30-7-2018
Member Is Offline


[*] posted on 28-3-2019 at 17:40


Nice phosphorescent powders beta 4 :) i had a funny experience with Zn and Cu .. the first time i made it, it worked .. ten times later i was never able to replicate .... i have to try again. any suggestions ? How did you make yours ? i made mine with Sulfur, zinc and copper powder ignition. Like i said it worked the first time, but never again :( F*** my luck :(
View user's profile View All Posts By User
woelen
Super Administrator
*********




Posts: 6838
Registered: 20-8-2005
Location: Netherlands
Member Is Offline

Mood: interested

[*] posted on 29-3-2019 at 00:14


Fluorescence indeed is very interesting. I also tried making ZnS:Cu from Zn, S and Cu, but the stuff I obtained is very impure. It is a dark brown solid. Pure ZnS should be white, or pale yellow (??). With some copper included I would expect it to become brown or green (CuS is nearly black, very dark brown). Maybe I should use very fine copper powder. My copper powder probably is too coarse (65 micron particles). Anyway, the stuff I made does not show any fluorescence.

Years ago, someone donated me a small display sample of depleted uranyl nitrate (too little to do actual experiments with it, but very nice as remarkable display sample). This shows fantastic fluorescence under black light.

uranyl_nitrate.jpg - 61kB uranyl_fluorescence.jpg - 36kB




The art of wondering makes life worth living...
Want to wonder? Look at https://woelen.homescience.net
View user's profile Visit user's homepage View All Posts By User
Waffles SS
Fighter
*****




Posts: 928
Registered: 7-12-2009
Member Is Offline


[*] posted on 29-3-2019 at 00:29


Nice Pictures Woelen and beta4,

What is your procedure and ratio for making ZnS:Cu?

[Edited on 29-3-2019 by Waffles SS]




Chemistry = Chem + is + Try
View user's profile View All Posts By User
Herr Haber
International Hazard
*****




Posts: 576
Registered: 29-1-2016
Member Is Offline

Mood: No Mood

[*] posted on 29-3-2019 at 06:46


Last year I got quite a bit of Uranium glass (depression glass) some arrived broken so I looked for Uranium salts to "dope" the glass some more.
I felt a bit uneasy at the idea of playing with Uranium salts but now I regret not getting that Uranyl nitrate I was offered !

Great pictures Woelen and Beta4 !
View user's profile View All Posts By User
DrScrabs
Hazard to Others
***




Posts: 123
Registered: 13-3-2018
Location: Laputa
Member Is Offline

Mood: Still evaporating..

[*] posted on 29-3-2019 at 11:30


I do have some Uranium glass aswell but don´t want to isolate Uranium in any state. Did not find any place wich accepst radiocative waste, also caontamination of my lab space is unacceptable in that way. Beeing happy with UV glowing glass marbes :D
And yes I am very jelous of the compounds posted before!

Edit: writing

[Edited on 29-3-2019 by DrScrabs]
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 29-3-2019 at 15:48


Really cool topic. Chem Science, quite a few of the reagents you've posted have been acids - have you thought of making any salts of them, for curiosity-sake? Some of them wouldn't be very feasible I suppose (ex. the perfluorocarboxylic acids).



View user's profile Visit user's homepage View All Posts By User
beta4
Harmless
*




Posts: 9
Registered: 3-2-2019
Member Is Offline


[*] posted on 29-3-2019 at 16:21


If someone is interested in making ZnS:Cu, I posted the procedure and an helpful reference in this thread https://www.sciencemadness.org/whisper/viewthread.php?tid=14....

From my little experience it's key to start from very pure materials. ZnS can be made as described in the Brauer by bubbling H2S in an acidified ZnSO4 solution, but I decided to just buy lab grade ZnS to avoid messing with H2S.

The copper sulfate was tech grade but I recrystallized it, and the ammonium chloride was made from household reagents but has been recrystallized three times.

And given this is a thread about reagent pictures, here's a photo of some of my undoped ZnS starting material. I can confirm it's perfectly white.

ZnS.jpg - 222kB

@woelen: nice fluorescent sample. Does it have an afterglow?
View user's profile View All Posts By User
Chem Science
Hazard to Self
**




Posts: 76
Registered: 30-7-2018
Member Is Offline


[*] posted on 4-4-2019 at 01:11


Here are some nice stuff :D

Bathophenanthroline Ferrous Sulfate Complex.JPG - 1.8MBa-Nitroso-B-Naphthol.JPG - 1.4MBRuthenium Complex.JPG - 1.7MB
View user's profile View All Posts By User
Chem Science
Hazard to Self
**




Posts: 76
Registered: 30-7-2018
Member Is Offline


[*] posted on 4-4-2019 at 01:35




Lanthanum Nitrate.JPG - 1.7MB Glow Stuff.JPG - 1.9MB Sodium Azide.JPG - 1.9MB Sodium Hydride.JPG - 1.6MB
View user's profile View All Posts By User
Chem Science
Hazard to Self
**




Posts: 76
Registered: 30-7-2018
Member Is Offline


[*] posted on 4-4-2019 at 02:07




Dimethyl Sulfate.JPG - 1.5MB Sodium Arsenite.JPG - 1.6MB
View user's profile View All Posts By User
beta4
Harmless
*




Posts: 9
Registered: 3-2-2019
Member Is Offline


[*] posted on 4-4-2019 at 11:26


Wow Chem Science, that ruthenium complex is on my list of compounds I want to synthesize, someday. It can be used to make OLED displays.

By the way, the oxalate in your next post looks structurally similar enough to TCPO, maybe it can be used to make a glow stick reaction.

Here are my pictures: triple recrystallized ammonium chloride (white), and copper acetate (dark green).

ammonium-chloride.jpg - 130kBcopper-acetate.jpg - 135kB
View user's profile View All Posts By User
Chem Science
Hazard to Self
**




Posts: 76
Registered: 30-7-2018
Member Is Offline


[*] posted on 4-4-2019 at 12:36


yes the TCPO like compound react similar to TCPO .. NileRed has a video about it[https://www.youtube.com/watch?v=Zn61XAGgJA0] I want to make OLED'S but have not get to that point.
Thar Copper Acetate is Nice !!Ammonium chloride is fairly common, but when it's triple recrystallized ammonium chloride, That gives it Power :cool:
View user's profile View All Posts By User
DrScrabs
Hazard to Others
***




Posts: 123
Registered: 13-3-2018
Location: Laputa
Member Is Offline

Mood: Still evaporating..

[*] posted on 5-4-2019 at 09:32


Sorry, not the best quality of the image. But the PhNHNH2.HCl is triple recrystallized from EtOH and got a nice treat with activated C.
Made by the NaSO3/SO2 reduction(SnCl2 is bs here IMHO), If there is some interest I can post the synthesis next time I make some :)

Phenylhydrazine.jpg - 1.5MB
View user's profile View All Posts By User
fusso
International Hazard
*****




Posts: 1616
Registered: 23-6-2017
Location: ∥(parallel) universe
Member Is Offline

Mood: Mood

[*] posted on 5-4-2019 at 10:12


@DrScrabs yes!!!



View user's profile View All Posts By User
beta4
Harmless
*




Posts: 9
Registered: 3-2-2019
Member Is Offline


[*] posted on 5-4-2019 at 14:25


MnSO4 made by reacting Mn powder with sulfuric acid. The pure compound should be white, so mine has some impurities.

mnso4.jpg - 497kB
View user's profile View All Posts By User
 Pages:  1  2    4  5

  Go To Top