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SnailsAttack
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Quote: Originally posted by DraconicAcid  | | Neodymium sulphate octahydrate. I was rather surprised to see these- they grew from the filtrate after collecting and washing the same substance with
near-boiling water. |
What a nice pink color. Maybe I ought to do something with my neodymium magnets that got
smashed together and cracked.
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Thyzoid
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This may look like a normal extraction but do not be deceived by its look. You are looking at a 6L RBF and a 2L extractor. An absolute unit of an
extractor. The first run will be the extraction of harmala alkaloids from 1Kg of seeds (legal here) later on also the extraction of piperine from a
lot of black pepper and also the extraction of quinine from 2-5kg of china bark.
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Sulaiman
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Nice 
From reading only: organic alkaloids and piperine are used as 'green' corrosion inhibitors for copper.
... No idea if of any significance wrt copper wire at bottom of extractor.
CAUTION : Hobby Chemist, not Professional or even Amateur
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Thyzoid
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This is what the harmala alkaloid extraction looks like under UV light. The solvent is isopropanol.
 
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Thyzoid
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New stuff
Got some new chems and can finally start the cubane preparation because of the benzene. On the nitropropene I´ll try to turn the double bond into a
cyclopropane ring. May also brominate the double bond. Only got it because of the want to smell it once lol. I have no interest of using it for
something illegal whatsoever.
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Pumukli
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Pretty
P-Nitro-Pyridine-N-Oxide crystals (are they?  ) on the tip of a glass rod.
(They are much smaller IRL, the rod is around 5 mm diameter in reality.)
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Texium
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Threads Merged
17-7-2023 at 10:30 |
Rainwater
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Todays partial eclipse, as seen from south eastern, north american continent (Georgia, USA) through a welding mask
Bad with good refractions
Better view
Video
https://youtu.be/Cld1lbYyfEo?si=NDNfLPLh6C3bfFfe
"You can't do that" - challenge accepted
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DraconicAcid
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My view of the eclipse was some brightish clouds on the horizon.
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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andyloris
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@Pumukli, where did you find your procedure for the synthesis of 4-Nitropyridine-N-oxide ?
I can recall searching a lot for it a while ago but couldn't find one.
[Edited on 14-10-2023 by andyloris]
Always trust your first idea, especially if you only have one.
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Texium
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Had a very good view of the eclipse here in SLC! I took them both with my phone camera, the first one through my eclipse glasses, and the second one
without a filter.
 
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Fery
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| Quote: Originally posted by andyloris | @Pumukli, where did you find your procedure for the synthesis of 4-Nitropyridine-N-oxide ?
I can recall searching a lot for it a while ago but couldn't find one. |
https://www.oc-praktikum.de/nop/en/instructions/pdf/1004_en....
https://onlinelibrary.wiley.com/doi/abs/10.1002/recl.1951070...
https://sci-hub.ee/10.1002/recl.19510700704
Attachment: 1004_en.pdf (80kB)
This file has been downloaded 282 times
Attachment: recl.19510700704.pdf (497kB)
This file has been downloaded 346 times
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andyloris
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Thanks !
Now I just need to make pyridine...
Always trust your first idea, especially if you only have one.
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Fery
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By the pyridine cheaply.
https://shop.es-drei.de/heterocyclen/163/pyridin-min.-99-5-z...
https://www.laboratoriumdiscounter.nl/en/pyridine-995.html
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Brain&Force
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I was lucky enough to receive a microscope, so here are some crystals of dysprosium nicotinate (which reliably forms x-ray quality crystals through
uncontrolled evaporation on a slide – how convenient!).
At the end of the day, simulating atoms doesn't beat working with the real things...
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Texium
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Nice! Is nicotinate a particularly good anion for lanthanides in general?
Also, have you grown crystals of every lanthanide yet (sans promethium)?
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Brain&Force
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I'm still working on getting the crystals to be large, but the nicotinate seems to be the most promising salt I've worked with. I might try the
benzoate next.
I've made the acetates of all stable lanthanides except lanthanum and lutetium, but neodymium acetate crystals are somewhat unstable and prone to
desolvation, and cerium/praseodymium acetates don't seem to form crystals easily.
At the end of the day, simulating atoms doesn't beat working with the real things...
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j_sum1
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So good to see you, B&F.
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Rainwater
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Cathodic protection wired wrong or electrolysis in the workplace.
You decide
https://youtube.com/shorts/tjeJzt_BwPM?si=hhnMTQiFyyOKChmV
26 day old SCH40 galvanized rigid conduit
"You can't do that" - challenge accepted
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Sir_Gawain
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Frozen dioxane. Might need to get a heater for the lab.
“Alchemy is trying to turn things yellow; chemistry is trying to avoid things turning yellow.” -Tom deP.
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DraconicAcid
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I've tried several times to make both K2CuCl4*2H2O (blue crystals) and KCuCl3 (deep red crystals). I've managed this...
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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greenlight
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Some Cesium nitrate precipitating crystals out of solution as the water evaporates slowly.
[Edited on 8-2-2024 by greenlight]
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Bedlasky
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PbCl2 crystals
Na2[BiCl5] crystals
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Precipitates
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Saucepan hydrogen explosion (from a chunk of sodium in water) and concentrated nitric acid drops on copper wire.
 
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Velzee
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| Quote: Originally posted by Texium | Had a very good view of the eclipse here in SLC! I took them both with my phone camera, the first one through my eclipse glasses, and the second one
without a filter.
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Here's one of my from the last eclipse a few weeks ago:
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 |
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Sir_Gawain
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Very simple circuit I got working quite spectacularly. Going to be part of my exhibit at Open Sauce.
“Alchemy is trying to turn things yellow; chemistry is trying to avoid things turning yellow.” -Tom deP.
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