Select the correct identity of glacial acetic acid.

It is acetic acid that is held below 0 ∘ C.
It is pure, anhydrous acetic acid.
It is an isomer of acetic acid.
It is acetic acid in the solid phase.

It is pure, anhydrous acetic acid is the correct answer.

Explanation:

Glacial acetic acid contains very less water that the reason it is called anhydrous.Glacial acetic acid is a colorless, clear liquid and corrosive.The glacial acetic acid in the diluted form used in vegetables and food preservation,flavoring in the slice, sausage, canned fruits and also it used to treat the bacteria and fungal infections.