Used as a sedative and anticonvulsant in medicine, particularly in the early 20th century to treat nervous disorders and epilepsy.

Acts as a catalyst or reagent in organic synthesis, especially in Grignard reactions where it facilitates carbon-carbon bond formation.

Employed in the preparation of other magnesium-containing compounds and in some types of electrochemical processes.

Utilized in research settings for bromination reactions and as a source of bromide ions in controlled chemical environments.