June 05, 2020, 04:09:57 PM
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Topic: Will Cerium (Element #58) corrode completely if kept in open air?  (Read 371 times)

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Offline GammaBettaFluxx3000

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I recently acquired a sample of Cerium for my element collection.
It came in a plastic bag under kerosene.

I removed it from the package and washed it to remove the oil/kerosene.
The sample is now sitting in my desk in open air.

-- Can I keep it that way? Or Will it just oxidize further and further until it crumbles apart in a few months/years?

Offline AWK

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AWK

Offline GammaBettaFluxx3000

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Re: Will Cerium (Element #58) corrode completely if kept in open air?
« Reply #2 on: January 25, 2020, 05:01:52 PM »
https://www.webelements.com/cerium/chemistry.html

Well, thanks, the link you provided only says Ce will tarnish when exposed to air. But that's all.
So my sample should be fine as long as I don't remove the layer of oxide that formed over it, right?

Offline chenbeier

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Re: Will Cerium (Element #58) corrode completely if kept in open air?
« Reply #3 on: January 25, 2020, 05:04:38 PM »
If possible put it in a glass tube unter nitrogen or argon.

Offline GammaBettaFluxx3000

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Re: Will Cerium (Element #58) corrode completely if kept in open air?
« Reply #4 on: January 25, 2020, 05:07:53 PM »
If possible put it in a glass tube unter nitrogen or argon.
Unfortunately I don't have access to any of those :/

But thanks anyway.

Offline Enthalpy

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Re: Will Cerium (Element #58) corrode completely if kept in open air?
« Reply #5 on: January 28, 2020, 10:25:57 AM »
Wiki: "Cerium metal is highly pyrophoric, meaning that when it is ground or scratched, the resulting shavings catch fire."

Liquid paraffin wasn't a bad idea.

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