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arkoma
Redneck Overlord
Posts: 1761
Registered: 3-2-2014
Location: On a Big Blue Marble hurtling through space
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Mood: украї́нська
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Long wave UV lamp left column, incandescent light right.
The top four are pictures of a rock I got from Violet Sin,and the other set is a piece of dragon's blood resin (incense)
 
 
 
"We believe the knowledge and cultural heritage of mankind should be accessible to all people around the world, regardless of their wealth, social
status, nationality, citizenship, etc" z-lib
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Rainwater
National Hazard
Posts: 919
Registered: 22-12-2021
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Mood: indisposition to activity
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youtube video
Dancing sodium.
The sodium metal is reacting with a secondary alcohol in mineral oil.
This reaction produces hydrogen gas, which stick to the small balls of molton sodium, causing them to float.
"You can't do that" - challenge accepted
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Morgan
International Hazard
Posts: 1694
Registered: 28-12-2010
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Mood: No Mood
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This was odd how the syringe pauses and restarts well over twenty times, the ping pong ball reactivating the motion. It's just a 1 ml syringe press
fit to a 1 ml test test via a piece of pink silicone tubing. I've run it many times and it's extremely resistant to stopping completely, one run over
5 minutes when I finally stopped it.
I bought the syringe for one dollar on eBay from China several years ago and never used it for anything.
Spontaneous Combustion of a Platinum Catalyst Lighter Powering a 1 ml Syringe Motor
https://youtu.be/PZVBjWIK_3A
Another angle
https://youtu.be/tGD_D9NzDVM
[Edited on 6-3-2022 by Morgan]
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Tsjerk
International Hazard
Posts: 3032
Registered: 20-4-2005
Location: Netherlands
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Mood: Mood
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Hydroxylamine HCl from approximately 80% methanol.
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DrRadium
Harmless
Posts: 17
Registered: 30-11-2021
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One of my earlier attempts to make YInMn blue in two different hues
A recent big batch of YInMn blue
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DrRadium
Harmless
Posts: 17
Registered: 30-11-2021
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Metal substitution variants of YInMn blue, YAlCuTi greens
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Tsjerk
International Hazard
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Location: Netherlands
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That blue is intense! I read about it, is the color in the picture representative for the color in real life?
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Brain&Force
Hazard to Lanthanides
Posts: 1302
Registered: 13-11-2013
Location: UW-Madison
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Mood: Incommensurately modulated
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Neodymium acetate tetrahydrate, taken with a really nice Leica microscope and a polarizing filter.
At the end of the day, simulating atoms doesn't beat working with the real things...
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Lion850
National Hazard
Posts: 517
Registered: 7-10-2019
Location: Australia
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Mood: Great
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Gold!!!
not really, just a leaf of lead iodide 
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kweiny
Harmless
Posts: 12
Registered: 30-12-2018
Location: Somewhere in Europe
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Mood: Excited
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I recently worked with a Chlorine compressor (takes gaseous chlorine from a big electrolysis cell and turns it liquid) and the liquid Chlorine looked
absolutely stunning when shining a flashlight through the watchglass.
 
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DraconicAcid
International Hazard
Posts: 4332
Registered: 1-2-2013
Location: The tiniest college campus ever....
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Mood: Semi-victorious.
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Crystals of Cu(acac)2, formed from methanol/isopropanol.
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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Lion850
National Hazard
Posts: 517
Registered: 7-10-2019
Location: Australia
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Nickel sulphate made by dissolving nickel nitrate in glacial acetic acid and then dropwise adding the stoichiometric amount of sulphuric acid.
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DrRadium
Harmless
Posts: 17
Registered: 30-11-2021
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Quote: Originally posted by Tsjerk  | | That blue is intense! I read about it, is the color in the picture representative for the color in real life? |
I hope you're asking about the YInMn blue or I'm about to answer questions no one is asking. Yes, that is pretty close to how it looks in bright
light when synthesis is complete. I adjust white balance and if necessary adjust hue a little in order to make it look in photos as it to my eye.
It doesn't come out this intense after the first heating, although it is most definitely blue.
If I had a pelleting press I might be able to do it in one run, but without one it requires a few heat-grind-reheat cycles to develop this intensity.
I have photos up that show changes over the typical 3 necessary heating cycles as part of an instructable I recently posted on making the pigment.
Figured I kept saying that most anyone with a kiln that could reach 1200°C could make it, so I should try to prove it. I wrote it up as a
introduction to solid state chemistry. Relevant photos will be in step 5 even if I improve the images used: https://www.instructables.com/Make-YInMn-Blue-Pigment-Using-...
Regardless the process ends up producing pigment that looks very much like the commercial pigment. I'm attaching an image of mine vs official PB86
shot side by side. The isolated PB86 was a byproduct of analysis I did on Golden heavy body acrylic YInMn blue I bought when it was briefly
available. I wanted to find out how much pigment they used in their paint (answer about 20-25% of the total weight of paint, 40-45% of the dry
weight in case anyone cares) to guide my own paintmaking.
That is probably more than you or anyone else wanted to know.
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DrRadium
Harmless
Posts: 17
Registered: 30-11-2021
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Are those crystals as flexible as is claimed? Can they really be tied in knots?
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DraconicAcid
International Hazard
Posts: 4332
Registered: 1-2-2013
Location: The tiniest college campus ever....
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Mood: Semi-victorious.
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I did not know they were supposed to be flexible. I'll try, but I have my doubts.
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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Tsjerk
International Hazard
Posts: 3032
Registered: 20-4-2005
Location: Netherlands
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Mood: Mood
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Thanks for the answer, I was asking about the YInMn
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Lion850
National Hazard
Posts: 517
Registered: 7-10-2019
Location: Australia
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Mood: Great
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Wet potassium ferric oxalate. I hope it keeps the color after bench drying
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Texium
Administrator
Posts: 4579
Registered: 11-1-2014
Location: Salt Lake City
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Mood: PhD candidate!
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Keep it in the dark if you don’t want it turning brown!
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Lion850
National Hazard
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Location: Australia
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Hi Texium yep I am aware of this and wait with interest to see how quick this will happen. Once dry it will in a clear vial which of course don't help
but I like to see the colors
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Texium
Administrator
Posts: 4579
Registered: 11-1-2014
Location: Salt Lake City
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Mood: PhD candidate!
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Some that I made and kept in a clear vial turned very brown within a year. The interesting thing though was that I had kept it on a shelf alongside
many other vials of compounds, so the side that was facing outward had turned brown, while the other side was still green.
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Gammatron
Hazard to Others
Posts: 125
Registered: 30-8-2022
Location: Abandoned Uranium Mines
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| Quote: Originally posted by kweiny | I recently worked with a Chlorine compressor (takes gaseous chlorine from a big electrolysis cell and turns it liquid) and the liquid Chlorine looked
absolutely stunning when shining a flashlight through the watchglass.
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That is insanely beautiful and scary! I work in a plant with a massive ammonia refrigeration system and I'm always slightly nervous being around that
stuff.
[Edited on 9-2-2022 by Gammatron]
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Gammatron
Hazard to Others
Posts: 125
Registered: 30-8-2022
Location: Abandoned Uranium Mines
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Some compositions of uranium over a UV light. I dont even remember how I made this.
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vano
National Hazard
Posts: 661
Registered: 22-3-2019
Location: Georgia
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some photos
  
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vano
National Hazard
Posts: 661
Registered: 22-3-2019
Location: Georgia
Member Is Offline
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some ampoules.
 
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vano
National Hazard
Posts: 661
Registered: 22-3-2019
Location: Georgia
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accidentally grown cobalt nitrate crystals.
 
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