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Bedlasky
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[*] posted on 14-3-2020 at 18:27
Cerium pyrophoricity

Hi.

I am thinking about buying some cerium metal. I read some time ago that cerium is pyrophoric. I suppose that only in form of dust, but I am not sure about that. Have you some experiences with storing cerium metal?
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elementcollector1
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[*] posted on 14-3-2020 at 18:54


In finely divided form, it's pyrophoric. See this page for behavior in bulk form:

https://www.elementsales.com/re_exp/

Under argon or mineral oil, it should present no significant problems.



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Deathunter88
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[*] posted on 15-3-2020 at 00:25


Ferrocerium rods contain a large percent of cerium, and those don't catch fire spontaneously. You will be fine.
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Bedlasky
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[*] posted on 15-3-2020 at 05:23


Thanks.
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Bedlasky
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[*] posted on 20-3-2020 at 18:40


Hi.

I finally have cerium metal :D. I bought it along with Mo and Mg powders. Seller send it in plastic vial with mineral oil. 3g of Ce costs 117Kč (4,25€).

For CZ members: I bought these metals here. This seller mainly sell elements - for hobby chemists and also for element collectors. He also sells some chemical compounds and other useful stuff.

IMG_20200321_012241.jpg - 2.2MB
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Herr Haber
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[*] posted on 21-3-2020 at 01:05


I've had Cerium lumps. It oxidizes fast and disintegrates as a powder.
Never tried to use it in a composition and see if there was metal left or just the oxide.

Storing in oil seems smart.



The spirit of adventure was upon me. Having nitric acid and copper, I had only to learn what the words 'act upon' meant. - Ira Remsen
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Fery
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[*] posted on 21-3-2020 at 14:01


Bedlasky - do you need Ce metal, couldn't you use its oxide which is much more cheaper?
I visited the eshop you mentioned few times already but always found cheaper sellers, especially from Poland where no problem of buying few kg which were on stock and shipped immediately.



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