vano
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Erbium salts
Hi Lion850!
Nice! can you show me your erbium compounds?
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Lion850
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Vano - as requested photos of the Erbium compounds I made.
 
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vano
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Very good compounds. Thank you so much!
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MidLifeChemist
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Very nice! I have some erbium oxide. How did you make the Erbium bromide?
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vano
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I wonder how easy it is to get dry chloride crystalhydrate. As I see you could not get dry bromide, it was the same in my case with samarium chloride.
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Texium
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I split this out of the ferric oxalate thread since it is entirely off-topic. vano, please avoid completely changing the subject of a thread. These
posts would be very hard to find later on if I had left them in the other thread, and it was already getting hard to follow since two discussions were
happening simultaneously.
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Lion850
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MidLifeChemist to make the erbium bromide, a double displacement reaction was performed between a calcium bromide solution and an erbium sulphate
solution. This caused calcium sulphate to precipitate. After filtering the filtrate (clear pinkish solution) was reduced in volume be slow boiling
until it started to crystalize. It was then put into a desiccator for 48 hours, and while it did dry further it was still a wet paste. As shown in the
photo. It will probably need to be placed in a sealed container with a drying agent for quite a while to get dry crystals.
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MidLifeChemist
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Quote: Originally posted by Lion850  | | MidLifeChemist to make the erbium bromide, a double displacement reaction was performed between a calcium bromide solution and an erbium sulphate
solution. This caused calcium sulphate to precipitate. After filtering the filtrate (clear pinkish solution) was reduced in volume be slow boiling
until it started to crystalize. It was then put into a desiccator for 48 hours, and while it did dry further it was still a wet paste. As shown in the
photo. It will probably need to be placed in a sealed container with a drying agent for quite a while to get dry crystals. |
Ok thanks! I'll have to try to get my erbium oxide to react with my sulfuric acid then, the erbium bromide looked nice.
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TyppiHappo
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Lion850, nice erbium compounds! You could try taking two pictures, one in natural (or incandescent) light and one from a fluorescent light bulb, in
order to observe the color change. It's not as dramatic as neodymium or holmium salts, but still worth noting.
I made some REE bromides (holmium, thulium and gadolinium) several days ago and now I'm trying to dry the concentrated solutions in a desiccator over
NaOH. It takes a long time. I really hope I can get crystals of them. I will definitely make erbium bromide in the near future. The method I use is
just dissolving the REE oxide in 48% HBr and few mLs of water.
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Bezaleel
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Erbium Acetate
A crystals and rare earth fan, I need to add a picture of the Er(AcO)3.4H2O I made in 2010.
It crystallises from solution, but the solution may stay in supersaturation for quite some time (days, up to even a fortnight).
I would definitely grow a large crystal from it, if it weren't so terribly hard to obtain a well-shaped seed crystal.
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nezza
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Here's a reaction matrix I did on a plate. Not the best picture, but it includes some Erbium salts.
If you're not part of the solution, you're part of the precipitate.
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![[*]](images/xpblue/default_icon.gif){kind=icon}
