WHO recommends no more than 2.5kg a day for an average weight adult male when ingested as a food additive. Wouldn’t call PG “toxic”…

Thanks. So… probably the same stuff as in the coolant in your car. That’s good. Toxic in “too much” amounts, but not environmentally dangerous in the same way as PFA-based formulas. Just the answer I was looking for. Again, thank you. I rate your reply five stars. :-)

Looks like they’ve brought out a bunch of low-ish speed interfaces on pigtails; which should be fine for GigE BMC connections, VGA, USB, and the like; but which seems much less helpful for the sort of high speed interfaces that you are going to see on systems that are worth the hassle of immersion cooling.

Do they have similar options for multiple 100GbE connection scenarios? Is the comparatively innocuous and low cost thermal material intended to make drain-to-service an acceptable options for a lot of things where ports that don’t leak would be too fiddly?

and running the product name through their SDS lookup(which doesn’t seem to generate direct links; but is linked to on the product page); it’s an unspecified concentration of propylene glycol; presumably along with various anticorrosion things; rather than a fluorocarbon based chemistry.

When the SDS is claiming that the concentration of the primary ingredient is a trade secret at precisions greater than a 10% band it’s not necessarily a comprehensive rundown of exactly how the sausage is made; but it’s definitely not one of the historical mostly fluorine chemistry ones whose biological inertness has not panned out as intended.