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Author: Subject: Potassium mirror ?
International Hazard

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[*] posted on 16-8-2023 at 10:32
Potassium mirror ?

Heating a question mark shaped retort tube which was welded on one end snd coupled with a 10mm borosilicate tube on the other end had a nice effect.
I heated K2CO3 + C to over 1200 C (probably more because the tube melted) and saw a nice mirror appearing on the glass tube. That must be condensed K metal, but was unable to capture it in the oil. Anyway, after cooling I dismantled it and saw the still nice mirrored tube connected to the (deceased) retort.

RX709617.JPG - 2.1MB

UPDATE: When it was cooled down I poured some water into the glass tube and indeed lilac flames appeared which was an indicator of the presence of K metal.

[Edited on 2023-8-16 by metalresearcher]
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[*] posted on 16-8-2023 at 13:09

Dang nice! Would you mind showing us your heating arrangement/apparatus?
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