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Make Sodium Metal with Menthol (and a bunch of other stuff...)

In this video we make sodium metal from menthol, sodium hydroxide, magnesium, baby oil, and a some lithium if necessary. First, we get a flask and add in 14g of magnesium metal, this can be obtained from fire starters. Then we add in 20g of sodium hydroxide which is acquired from drain opener. Now the key catalyst is 1-2g of menthol crystals, these can easily be bought online. A magnetic stir bar should be added at this point. On top we add in 125mL of mineral oil, i recommend hypoallergenic baby oil. Finally, 3g of sodium metal is added to jump start the reaction and serve as a drying agent. If this cannot be obtained then the lithium hacked out of an AA energizer battery can be used. The reaction mixture is connected to a gas bubbler and a thermometer is inserted. Magnetic stirring is applied and the contents kept suspended to prevent hot spots. The mixture is heated to 120-130 celsius for 2 hours or until bubbling stops, whichever comes first. What's happening is the sodium or lithium metal jump start is reacting with any moisture present and destroying it. This is necessary to prevent damage to the glassware from the highly caustic reaction mixture at higher temperatures. If this damage is acceptable then the jump starter metal may be ignored. After 2 hours or when the bubbling stops, heating is increased to 200 Celsius. Sodium metal is produced here as the magnesium reacts with sodium hydroxide to produce sodium, magnesium oxide, and hydrogen. Menthol serves as the catalyst, allowing this reaction to proceed in a controlled fashion at 200 Celsius. Other catalysts like tertiary alcohols or borneol may also be used. Heating is continued until bubbling stops, about 30-40 hours in the case of menthol. After cooling, the sodium can be boiled in dioxane to separate excess magnesium. Alternatively, the sodium can be remelted into an ingot, and the excess magnesium cut away as it tends to settle at the bottom. Approx yield is 10.9g or 94% Related videos: Make sodium metal with domestic chemicals (thermochemical dioxane process): https://www.youtube.com/watch?v=jCrFFVVcPUI Make dioxane: https://www.youtube.com/watch?v=9Zzrn-61XAY Donate to NurdRage! Through Patreon (preferred): https://www.patreon.com/NurdRage Through Bitcoin: 1NurdRAge7PNR4ULrbrpcYvc9RC4LDp9pS Glassware generously provided by http://www.alchemylabsupply.com/ Use the discount code "nurdrage" for a 5% discount. Twitter: https://twitter.com/NurdRage Reddit: https://www.reddit.com/r/NurdRage/ Instagram: https://www.instagram.com/nurdrageyoutube/ #Sodium #Menthol

Comments

Anonymous

The easiest to get hypoallergenic baby oil product for me in the UK (Johnson's) apparently contains isopropyl myristate and 'parfum'. Is this likely to be a problem?

NurdRage

i'm not sure about that. But an alternative mineral oil might be food grade mineral oil used for cleaning food processing equipment. They aim to be as cheap as possible so they wouldn't have additives. check the labels if you explore in that direction.

jason black

Nice to see this series wrapped up, especially with the walkthrough of the apparatus setup.

Anonymous

Dr. Lithium fantastic work. I am not a chemist but I enjoyed the journey while looking over your shoulder, so to speak. I have a question. Why is menthol necessary during the "explosive carrot" production step? Seems that once the sodium is liquefied, gravity is performing the Mg separation step.

NurdRage

oh that's just to get the sodium bits to coalesce. If you don't do it, the sodium doesn't like to come back together even though it's liquid. You can still do it, but it's just so much easier once you add a bit of menthol. In theory you could use any alcohol. But i figure if you already got this far in the experiment, you have menthol conveniently lying around so might as well use it.

Anonymous

Since menthol won't boil away can I reuse the mineral oil without adding more? Just curious...

NurdRage

in theory yes. but i'be never tried it. i don't know how easy it is to recycle the mineral oil from the magnesium oxide slag. I suspect the menthol will stick to the magnesium oxide so you'll lose a portion of it when you filter.

LFTRnow

Could you use this method to make other difficult to extract metals? I'm guessing potassium could be done? What about calcium? This is very interesting research and I'm wondering if it could be applied in other ways. Thanks in advance.

Anonymous

Could anyone recommend a good source for high temp stir bars. I’ve attempted this twice now, both times my stir bars crap out right around 200 C. It seems I’m not the only one with the issue. https://chemistry.stackexchange.com/questions/148052/multiple-stir-bars-have-lost-their-magnetism