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Author: Subject: Pretty Pictures (2)
The Volatile Chemist
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[*] posted on 30-8-2015 at 14:07


nice, nitro-genes. What method did you use to produce it?
Violet sin, how do you evaporate your solutions? I've had 250mL of Copper(II) acetate soltn. sitting for 2 weeks. It hasn't evaporated more than 50 - 100 mL. I don't really want super-nice crystals, just the product. But boiling hydrolyses the acetate to hydroxide and acetic acid. Any suggestions?




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nitro-genes
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[*] posted on 31-8-2015 at 12:10


Some pretty cool photo's in this thread, and thanks, it was a precursor to 4-diazo 2,6 dinitrophenol, described here: https://www.sciencemadness.org/whisper/viewthread.php?tid=63... :)
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aga
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[*] posted on 31-8-2015 at 12:37


photos. not photo's.

the ' signifies Possession in this context.

Do you want to be Possessed by the evil chemical spirit of a photo ?

[Edited on 31-8-2015 by aga]




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nitro-genes
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[*] posted on 31-8-2015 at 12:53


I AM possessed, you grammar nazi :P
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[*] posted on 31-8-2015 at 13:01


A : I mixed NO with a Lung
B : I mixed NO2 with a Lung
C : i mixed N2O with a Lung.

Which subject lived, which ones died ?

The one that got the TYPING correct or one of the others ?

Accuracy in typing your Own Language will give you more credence in what you write.

Getting it obviously wrong will tarnish what you type, even if what you're saying is amazing.

This becomes important when you want to make some serious $.




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nitro-genes
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[*] posted on 31-8-2015 at 13:25


All three would die or already have died, because mixing implies you either take out the lung, or have one in a jar, prior to you mixing them with NOx. "Exposed" is the word you are obvbiously looking for :)

And no, English (wow, look..a capital) is not my native language :)



[Edited on 31-8-2015 by nitro-genes]
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aga
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[*] posted on 31-8-2015 at 13:36


Wow !

Your English is incredibly good then, as many Natural English speakers commonly put an apostrophe (') in the wrong place.

What is your Mother Tounge ?

There are two ways to take a Correction :-

React aggressively and learn nothing

Accept the correction and learn something.




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[*] posted on 31-8-2015 at 14:09


Quote: Originally posted by aga  
Wow !

Your English is incredibly good then, as many Natural English speakers commonly put an apostrophe (') in the wrong place.

What is your Mother Tounge ?

There are two ways to take a Correction :-

React aggressively and learn nothing

Accept the correction and learn something.


Mother tongue (not tounge) shouldn't be capitalized, and neither should correction.




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.
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[*] posted on 31-8-2015 at 14:46


Very good catch for an American speaker.

Personally i like inappropriate Capitalisation, Lots.

Z is not really a substitute in Correct English.

Tire is an expression of weariness, and has absolutely nothing to do with Rubber.

[Edited on 31-8-2015 by aga]

anyway's'
im Tyre'd and need to got some's' sleeps's'es'

Back at you in 7~8 hours, like as not, methinks sirra'h.

[Edited on 31-8-2015 by aga]




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[*] posted on 31-8-2015 at 22:45


None of the three subjects died, as they all mixed one of the NxO/NOxs with a certain person called Lung.
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[*] posted on 1-9-2015 at 14:19
Sulfur crystalization from DCM


after reading the thread about sulfur in hot toluene
and since I just received 5l of 99.9% DCM, I thought I'd try sulfur in DCM ...

method: excess sulfur in 50 ml boiling DCM, filtered, cooled to room temperature.

Sulfur is not very soluble in DCM but enough to form a few small crystals:



DCM_Sulfur.jpg - 786kB

sorry about the poor quality photo'

P.S. I discovered that I do not like the smell of DCM.

[Edited on 1-9-2015 by Sulaiman]
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[*] posted on 1-9-2015 at 14:42


Yeah. You have a bit of camera shake there.
What I am finding interesting is the difference in the shape of crystals produced depending on the solvent used. I have not come across this phenomenon before. Does anyone have any insight into this?

(I am sensing a project looming.)
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[*] posted on 4-9-2015 at 12:41


I recently realized that toluene is''''''''nt pronounced tooline...oops...
It's commonly noted about sulfur, but I don't recall any good explanation of why, or any other examples.




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[*] posted on 4-9-2015 at 12:47


You get nice transparent rhombic sulphur crystals in liquid disulphur dichloride exposed to air for a while.

Extracted from the liquid, they immediately form a dusting of powdery yellow sulphur on them.

If there was a solvent that took the S2Sl2 off them before exposing to air, they'd be a Thing to behold - glittery sulphur ! (maybe).




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[*] posted on 4-9-2015 at 12:57


Quote: Originally posted by The Volatile Chemist  
I recently realized that toluene is''''''''nt pronounced tooline...oops..

Tool-een is probably a lubricant sold to car mechanics.

Tol-you-een (even Tol-oo-een) is more like it.

While i'm ranting, how did Soul-der-ing become Sod-er-ing ?

Soldering should never involve the same parts of the body as the word Sod implies.

Remember that the iron is Very HOT.

Edit:

Imagine the scene :-
You, having just spent a Lot of money on new copper pipes for your house, and have painstakingly placed them exactly where they need to be, and the plumber arrives to soLder them together for you.

Him : "Nice pipes. I'll go right ahead and Sodder them up for you."
You: "What ?!?! You're going to Bugger up my pipes ?!?!"

Doesn't work for me, at all.

[Edited on 4-9-2015 by aga]




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[*] posted on 4-9-2015 at 12:58


I had a friend in grad studies who could not shake his habit of calling it "tol-you-leen".



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[*] posted on 4-9-2015 at 13:35


I had a friend once as well.

Lost long ago in a terrible drinking accident.




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cool.gif posted on 10-9-2015 at 14:54


Refluxing S2Cl2

P1000225.JPG - 4.7MB




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[*] posted on 11-9-2015 at 12:21


Ooh, pretty. Looks like really concentrated Potassium ferricyanide. :) Why are you refluxing it? Or is it combined with something else?



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[*] posted on 18-9-2015 at 02:10


Literature said I should use the Acetate but that is really hard to make
if you want it very fresh, at least it's not working with Acetate for me and if you follow literature it takes ages to do that. So I thought I'd try it out with Citrate for a couple of reasons and it worked out quite well. Still not perfect but I need to heat in during the reaction and I did it now cold so seems to work.

So here are solutions I needed and since there wasn't much about them on the net I thought I'd share a picture. This is Cobalt-Citrate and on the right Chromium(III)Citrate. The cam didn't pick it up that well so I made a little square with the real color. That Chromium looks really cool.



Citrate.jpg - 68kB
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[*] posted on 19-9-2015 at 14:01


Huh, very nice. The Cobalt Citrate is a similar color to Cobalt chloride?



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[*] posted on 20-9-2015 at 06:39


Funnily it changed colour over night. I guess it slowely turned into
the Aqua Complex which is purple. Might have to add more citric acid, dunno. I'll have to prepare it fresh anyways so it's just waste now but it looks quite cool.

Here is the updated version:

From left to right:

- Nickel-Citrate

- Chromium(III)-Citrate ???

- Cobalt-Citrate



Citrate d-metal.jpg - 53kB
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[*] posted on 21-9-2015 at 05:14


Chromium(III) is notorious for taking obnoxiously long times to exchange ligands, so that's likely what happened. Perhaps some citrate ions coordinated to the chromium as well.



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[*] posted on 22-9-2015 at 18:31


Interesting. I was slightly suprised to find barium had an insoluble citrate. This fact salvaged an attempt to make barium hydroxide (which didn't precipitate well enough to collect). Like the bad chemist I am, I just threw some citric acid into solution and fitered the precipitate. So I at least got one compound for my barium collecton. Which is starting to get some size :)



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[*] posted on 22-9-2015 at 18:38


Quote: Originally posted by The Volatile Chemist  
Interesting. I was slightly suprised to find barium had an insoluble citrate. This fact salvaged an attempt to make barium hydroxide (which didn't precipitate well enough to collect). Like the bad chemist I am, I just threw some citric acid into solution and fitered the precipitate. So I at least got one compound for my barium collecton. Which is starting to get some size :)
You have a barium collection? Must be very white! :P
Try making barium manganate if you haven't yet though. I've tried it a few times with partial success. It's supposed to be dark blue, but mine keeps turning brown about a day after I wash and dry it.




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