Sciencemadness Discussion Board

I made yellow salt!

Radiums Lab - 19-10-2025 at 03:05

Hi guys I got to visit my lab today.

I recently stumbled upon a video on Periodic videos demonstrating blue salt, but it was not due to the sodium chloride solvation but the solvation of potassium chloride.
I went ahead and tried it I got yellow salt as mentioned by my text book.

I just used table salt instead of adding some KCl, and heated it until it melted, after that I added a fair amount of sodium metal and heated until there were yellow sparks visible(unfortunately I can upload that video on SM).

I blocked the top and left it to cool down, I got some solvation and some peroxide.
Sorry For the poor background but I had to do it outside.

What do you guys think, did anyone else try this before.

IMG_20251019_160845813.jpg - 1.4MB IMG_20251019_145744089.jpg - 620kB IMG_20251019_142106741.jpg - 1.3MB

IMG_20251019_142046764.jpg - 665kB

[Edited on 19-10-2025 by Radiums Lab]

bnull - 19-10-2025 at 03:33

What is yellow salt?

Radiums Lab - 19-10-2025 at 03:41

Sorry The images were large and it didn't upload so I cropped it and uploaded them and one more thing here's the same salt after about 45 minutes.
The red part reacted with water and oxygen and turned into a white mess.

[Edited on 19-10-2025 by Radiums Lab]

IMG_20251019_164713389.jpg - 821kB

Radiums Lab - 19-10-2025 at 03:46

Quote: Originally posted by bnull  
What is yellow salt?

@bnull, when sodium metal is added to molten salt it solvates and forms yellow coloured stuff due to incorporation of electrons into the lattice. This is due to Metal excess crystal deffect.
Here's the video of periodic videos:
https://youtu.be/Qs4uBRKogL0?si=MZ4vaUxyeBh8B8-5

[Edited on 19-10-2025 by Radiums Lab]

bnull - 19-10-2025 at 04:08

Thank you. A quick search resulted in nothing, so I was wondering what "yellow salt" was.

[Edited on 19-10-2025 by bnull]

Morgan - 19-10-2025 at 05:46

This came to mind.
Glowing Salt
https://www.youtube.com/watch?v=V-3X9zP9BUk&t=2s
Irradiated Salt Is Weird
https://www.youtube.com/watch?v=h4qeenso73o

[Edited on 19-10-2025 by Morgan]

Radiums Lab - 19-10-2025 at 09:14

@Morgan thanks for sharing your findings. I didn't know this phenomenon before(in rock salt).