Credit: NILERED/SCIENCE PHOTO LIBRARY

Caption: Melting and cleaning potassium in mineral oil. This footage shows the final part of a series of steps in a process used to clean and purify potassium that had acquired a layer of oxides. Before the stage shown here, the oxides were removed from the potassium by chemical treatment. Then the partially-cleaned potassium was placed in a beaker of mineral oil to be melted down to remove solid impurities. This final melting stage, also under mineral oil, is done to remove most of the remaining impurities. Though a sheen of oxide is still present, the potassium is now much cleaner and ready to be stored until needed.

Release details: Model release not required. Property release not required.

Keywords: beaker, chemical, chemistry, clean, cleaning, clip, demonstration, educational, element, element k, experiment, film, footage, heat, heated, lab, laboratory, melt, melting, mineral oil, motion, no-one, nobody, potassium, purification, purifying, school science, spatula, stirring

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Melting and cleaning potassium

K007/2021 Rights Managed

Downloadable master

Duration: 00:00:24.1

Frame size: 1920x1080

Frame rate: 29.97

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 413.6M

Original

Capture format: Unknown

Codec: H.264

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