vano
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One of my favorite element
One of my favorite element is selenium. Is one of the element I come in contact with most often. I mainly make selenous acid from this selenium for
metal bluing. But I also make all sorts of compounds. Unfortunately I do not have all of them with me and I can not take photos. I will be grateful if
anyone can give me a good chemical reaction. I would be happy to add it to my collection.
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valeg96
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Can't wait for the Georgian courier service to be back working...
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Bedlasky
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Nice. CdSe is described as red, but yours looks brown. How did you make it?
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vano
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Actually it is a mixture of different selenides. I made it from cadmium sulfate monohydrate and sodium polyselenide. I wrote it before:
http://www.sciencemadness.org/talk/viewthread.php?tid=156684
I do not think that cadmium can form a polyselenide s where there will be a lot of selenium in the chain, presumably it must be mostly monoselenide.
Red will not be because the salts in the water were dissolved and (poly?)selenode precipitated instantly, while red is when the organic solvent
dissolves selenium and cadmium oxide, i.e. smaller particles, while it is much larger. I also made it with sodium selenide and had a slightly lighter
color on it. It was not too red. I have already used them all as a pigment.
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vano
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I'm afraid it will be too late. There is still quarantine here.
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Bezaleel
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What's the bright green selenide in your first post?
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vano
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It is a nickel selenite dihydrate. Look at first post
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Morgan
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If you were doing glass blowing or such, making red glass from the oxide might be mildly interesting.
Tidbits
https://www.chemistryworld.com/podcasts/selenium-dioxide/795...
https://www.compoundchem.com/2015/03/03/coloured-glass/
[Edited on 2-1-2021 by Morgan]
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vano
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I can do it in the future.
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