Is it still used as a dialectric / insulator for high voltage applications?

It seems it is a quite useful. However it is a nasty green house gas.

The “e” should be a “u”…… Sorry.

I have no idea.

Sorry.

AI Overview says:

Why is SF6 harmful?

Potent Greenhouse Gas:

SF6 is the most potent known greenhouse gas, trapping infrared radiation at a rate significantly higher than carbon dioxide.

Long Atmospheric Lifetime:

It is a very stable gas, persisting in the atmosphere for over 1,000 years in an undegraded state.

Climate Change Contribution:

Its high potency and long atmospheric lifetime mean that even small amounts of SF6 can have a substantial impact on global climate change.

Efforts to reduce SF6 use:

Alternatives:

Companies are developing and implementing fluorine-free alternatives for high-voltage switching, particularly for voltages up to 145 kV.

Disposal:

Research is ongoing into novel and safer methods for disposing of SF6 to minimize environmental and health impacts.

Policy and Regulation:

Governments are implementing regulations and policies to control SF6 emissions and report releases, as seen in the Kyoto Protocol and Canada’s environmental protection act.

Thank you Mr Car. It would seem HF6 is on the way out. Thanks for your post.