Éthérifier belong to the 1st group.
Éthérifier is conjugated the same way that verbs that end in : -ier
Éthérifier is conjugated with auxiliary avoir.
Éthérifier verb is
direct transitive. Éthérifier verb is a direct transitive verb, so passive voice can be used.
However, although the terminations are perfectly regular, stem can be irregular and have numerous variations.
Éthérifier is conjugated the same way that verbs that end in : -ier.