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Author: Subject: Pretty Pictures (2)
woelen
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[*] posted on 19-1-2021 at 00:30


That looks really nice. I have the ZnS:Cu variation, but I did not know of the other beautifully colored phosphorescences. Maybe I should try some of these as well.



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[*] posted on 19-1-2021 at 14:14


Thanks to my stupidity nature created this.
I left glass with water outside for a moment (it was minus 12 degrees C) and a dozen hours later got back. Just forgot. However the glass didn't break.

FrozenGlass.jpg - 967kB

[Edited on 20-1-2021 by Piroz]
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[*] posted on 20-1-2021 at 01:44


Quote: Originally posted by j_sum1  
Ok. I am indpired. I am going to have tobread that procedure.


Were you necking a few tinnies^^? And thanx for posting the link to Kristof's blog. Guess I'm getting to be an "old timer" here as things slip my mind now.




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[*] posted on 4-2-2021 at 01:27


I hope it is allowed to post a video in this thread. See attached showing gallium attacking iodine. Really surprised me.

Attachment: trim.C5772431-201F-4FD0-858B-A45812C38C88.MOV (6.2MB)
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woelen
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[*] posted on 5-2-2021 at 03:50


Very nice observation! Probably the combined volume of gallium + the volume of consumed solution of iodine has a slightly larger volume than the produced solution of gallium iodide, leading to slight underpressure at the place where the gallium 'eats' the iodine, leading to the attack-like behavior.



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[*] posted on 14-2-2021 at 12:43


Manganese sulfate crystal.

MnSO4_2.jpg - 752kB MnSO4_1.jpg - 455kB

[Edited on 14-2-2021 by Piroz]
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[*] posted on 14-2-2021 at 16:37


Piroz the crystal looks beautiful.
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[*] posted on 15-2-2021 at 00:10


Orange tin iodide (I assume) forming around the tin granules.

0834D1F4-836E-4A7F-A9B2-7476C5BC460C.jpeg - 1.1MB
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Sulaiman
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[*] posted on 15-2-2021 at 01:16


Quote: Originally posted by Piroz  
Manganese sulfate crystal.
Beautiful !

How long did it take to grow ?




CAUTION : Hobby Chemist, not Professional or even Amateur
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[*] posted on 15-2-2021 at 02:28


Quote: Originally posted by Sulaiman  

How long did it take to grow ?

2 or 3 weeks.
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Lion850
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[*] posted on 19-2-2021 at 14:06


Tin iodide crystals continue to grow. I’m not sure there is much I2 or HI left but I’ll leave it a few more days. Then to figure out how to wash them to remove residual acid. Any ideas?

Edit: The 'mounds' in the photo was the shape the crystals made as they grew from the tin granules - all the tin seems consumed now (the mounds are hollow) and there is no acid smell at all. Tomorrow I'll dry it on the steam bath and see what happens.

D5561EA2-0930-48F3-8B28-43DFFFC4E526.jpeg - 1.4MB 004DC0B3-968A-4065-89D3-D1A12BE9BFC1.jpeg - 2.2MB

[Edited on 20-2-2021 by Lion850]
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