Laythes' Secret Toxic Trace gas...

[fredinno]

10 hours ago, kerbiloid said:

Diacetyl seems to be green colored. Also it's simple, not aggressive, consists of extremely common elements.

But how is it even produced?

Quote

Diacetyl is produced industrially by dehydrogenation of 2,3-butanediol. Acetoin is an intermediate.^[5]

4 hours ago, cubinator said:

I've read the waves on Laythe would be some 50 m tall, much less than the monster from that black hole (how did that planet get there anyway? No sane planet would go that close to a black hole.). And Laythe is tidally locked, so the large wave from Jool wouldn't appear to move. Only the other muns would cause waves to worry about, and they are never all aligned at once, so the tides should be quite manageable for anything below the low-tide line. Which makes sense because there doesn't seem to be any life on the surface.

I know that, I was exaggerating on the tidal wave.

[kerbiloid]

1 hour ago, fredinno said:

But how is it even produced?

One of numerous products of different reactions between hydrocarbons and carbon oxides. Link contains some info, but this doesn't matter.
Main idea is: "there are hydrocarbonoxide-like substances which are more or less green and definitely can exist in a gas giant atmosphere, maybe even in great concentrations. No chlorine, no fluorine")