at 10% in ethanol:
pretty much what TGSC are saying on their site. But I also smell quite prominently a kind of „dry-chemical” note. Like synthetic/plastic package material or brand new electronic devices.
Burnt plastic. Also it reminds me of the smell that occurred when I was a kid and we were melting tin at new years eve, to pour it into water and „read” the figures.

For experimentation I will probably dilute it further to 5%.

Do you need larger amounts? Contact me!