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j_sum1
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Lovely, Pok. Thanks for these.
(subscribed.)
[Edited on 4-3-2019 by j_sum1]
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mayko
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Quote: Originally posted by mayko  | Hot off the press, a never-before-published photograph of plutonium tetrafluoride! This was obtained by nuclear anthropologist Martin Pfeiffer via
FOIA. It's a little disappointing (it is known as 'pink cake'; this is apparently misleading.) but upthread there are some very nice pictures of
exotic things like plutonium trichloride
If you're on twitter and interested in nuclear history/technology/sociology, definitely check him out!
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Martin has a new batch of pictures, probably the only of this plutonium compound in the public record.
Announcement:
https://twitter.com/NuclearAnthro/status/1107414103499276288
More here, under My FOIA Responsive Documents/PuF4 Plutonium Tetrafluoride Pictures/
https://osf.io/46sfd/
Some chemical background:
https://www.dropbox.com/s/829rbeoruo3a78w/Preparation%20plut...
al-khemie is not a terrorist organization
"Chemicals, chemicals... I need chemicals!" - George Hayduke
"Wubbalubba dub-dub!" - Rick Sanchez
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fusso
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100%?! did they really manage to remove every atom of impurites?!
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j_sum1
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To three significant figures, why not?
Now if he had said, 100.00000000000%, I would be suspicious.
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DraconicAcid
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No, they just rounded off to the nearest whole percentage.
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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Ubya
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yesterday (a few hours ago) was my birthday, my best friend gave me this as a gift, Autunite sample, i've been looking for one one ebay for years,
this made me so happy
(crappy photos taken with phone, i'll take better photos with a real camera in the morning, just came home after the party hahahhaa)
  
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feel free to correct my grammar, or any mistakes i make
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crystal grower
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Wow, that's a beautiful sample, I'd love to len one, too .
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Tsjerk
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It just means it is between 100.5% and 99.5%, obviously it can't be more than 100, so it is 99.5 or higher. Just like the other one which is between
93.5 and 94.5%.
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Chem Science
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Here's some Trifluoroacetic anhydride and bis(2,4,6 Tribromophenol) Oxalate
 
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greenlight
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KMnO4 solution
[Edited on 26-3-2019 by greenlight]
[Edited on 26-3-2019 by greenlight]
The only use for an atomic bomb is to keep somebody else from using one.
George Wald
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Tsjerk
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HgCl2 after a broken mercury thermometer dissolved in an excess of HCl left for a month.
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MrHomeScientist
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Yikes greenlight, you really should neutralize stuff like that instead of pouring straight down the drain! I know it probably wasn't
much, since KMnO4's color is so intense, but in this case it's easy: just add sugar!
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TheMrbunGee
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| Quote: Originally posted by MrHomeScientist | | Yikes greenlight, you really should neutralize stuff like that instead of pouring straight down the drain! I know it probably wasn't
much, since KMnO4's color is so intense, but in this case it's easy: just add sugar! |
It would decompose in minutes when mixing with dirty drain waters.
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Ubya
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some iodine in an evauated and sealed test tube (while cold it is transparent with solid iodine on the walls)
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feel free to correct my grammar, or any mistakes i make
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greenlight
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| Quote: Originally posted by MrHomeScientist | | Yikes greenlight, you really should neutralize stuff like that instead of pouring straight down the drain! I know it probably wasn't
much, since KMnO4's color is so intense, but in this case it's easy: just add sugar! |
Yeah I dont usually just pour stuff down the drain but it was a 0.02M solution and the colour is indeed intense even with very small amounts of
solute.
The only use for an atomic bomb is to keep somebody else from using one.
George Wald
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Abromination
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I found a picture from years ago from my first reaction ever, I must have had no clue what I was doing. I had seen a video showing copper sulfates
reaction with bases and figured since baking soda was a base, it would react with the copper sulfate. I must have been about 12. Now that I think of
it, the beautiful colors of copper compounds are really what got me interested in chemistry all of those years ago.
[Edited on 4-7-19 by Abromination]
List of materials made by ScienceMadness.org users:
https://docs.google.com/spreadsheets/d/1nmJ8uq-h4IkXPxD5svnT...
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Elements Collected: H, Li, B, C, N, O, Mg, Al, Si, P, S, Fe, Ni, Cu, Zn, Ag, I, Au, Pb, Bi, Am
Last Acquired: B
Next: Na
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Wizzard1
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By-product of Neodymium Sulfate purification. Enjoy!! It was about 3" across.
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fusso
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So is it FeSO4 or Pr2(SO4)3?
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j_sum1
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Sometimes the simple things are most satisfying.
It is nice to be back in the lab.
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MrHomeScientist
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Beautiful, Wizzard1! I'm quite familiar with those from all my magnet work a while back. Mine never stayed nice for long.
It's FeSO4, fusso. You get tons of it from magnet processing. Pr is in such small quantities you'd need a hell of a lot of magnets to make
that much, not to mention separating and purifying it from the Nd.
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bipolar
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Polycrystal of 5-MeO-DMT freebase :3
This beauty weighs about 380 mg 
Made it from melatonin (1. hydrolysis; 2. reductive amination with formaldehyde / NaBH4).
[Edited on 21-4-2019 by bipolar]
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Hegi
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| Quote: Originally posted by bipolar | Polycrystal of 5-MeO-DMT freebase :3
This beauty weighs about 380 mg
Made it from melatonin (1. hydrolysis; 2. reductive amination with formaldehyde / NaBH4).
[Edited on 21-4-2019 by bipolar] |
Amazing crystal and job. Can you please provide full procedure? I would love to get back to organic chemistry as I have access to NaBH4 now. 
Our webpage has been shut down forever cause nobody was willing to contribute. Shame on you all!!!
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DraconicAcid
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Some crystals of salicylic acid, grown from toluene/hexane. i was *trying* to make butyl salicylate, but I got these instead.
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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DavidJR
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Are you sure that's salicylic acid? When I recrystallised some of mine, I got needle-like crystals. Admittedly, I don't recall which solvent I used.
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DraconicAcid
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| Quote: Originally posted by DavidJR | | Are you sure that's salicylic acid? When I recrystallised some of mine, I got needle-like crystals. Admittedly, I don't recall which solvent I used.
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The melting point checked out (although I didn't do a mixed one). From water, I usually see needles.
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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