[WinnieP]

Hello there!
I've been playing around with sulfur powder and water. The sulfur is insoluble and floats on water. If you add enough, you can completely cover a small water surface. You can then coat an object with sulfur a bit like this: https://www.youtube.com/watch?v=X86uAWWZHi0.

I want to play around with this more, but sulfur is a bit expensive to just test out the coating process on different objects. Does anyone know of any cheap, accessible material that has similar properties (floats on water, insoluble, powdery)?

Thanks!

[AWK]

Flowers of sulfur is rather cheap chemical, though apothecary one is a very high purity, and may be expensive.

[kamiyu]

Charcoal.

(Not sure if this counts)

[Enthalpy]

Microballoons. Available at hobbyist shops.

Fine wood dust, as produced by sanding.

Graphite powder sold as lubricant. MoS₂ lubricating powder too, but a big proportion sinks directly.

Flour.

[WinnieP]

Thanks everyone, will test it out soon