Magnesium bromide

Magnesium bromide (MgBr2, CAS 7789-48-2) is an inorganic magnesium salt formed from magnesium and hydrobromic acid. It carries no assigned E-code and is commercially referenced under the abbreviations MgBr2 and Magnesiumbromid. It belongs to the broader category of inorganic bromide salts and mineral electrolytes.

In pharmaceutical manufacturing, MgBr2 serves as a source of bromide ions in sedative and anticonvulsant formulations, where bromide acts on neurological pathways to produce a calming effect. In water treatment, it functions as a pH buffer and biocidal agent, with bromide ions forming hypobromous acid under oxidizing conditions to suppress microbial growth in process water and cooling systems.

Magnesium bromide is available in anhydrous powder form and supplied under REACH-compliant documentation for the European market. Procurement teams should confirm grade suitability against Ph.Eur. or FCC specifications depending on end-use application. Standard packaging formats include multi-layer bags and drums sized for industrial quantities.