Why does a glass containing an iced beverage feel cold?
Molecules in the glass are moving faster
than molecules in the skin.
Molecules in the skin are moving faster
than molecules in the glass.

The msds for glacial acetic acid says that it is a flammable liquid that can severely burn any human tissue it comes in contact with. it reacts with bases, various metals, and strong oxidizing agents. its vapors can form explosive mixtures with air.