Magnesium bromide

Magnesium bromide (CAS 7789-48-2) is an inorganic salt used as a source of bromide ions for preservation, buffering, and chemical synthesis. Also known as MgBr2.

Where is Magnesium bromide used?

• Pharmaceutical manufacturing: reagent in Grignard-type reactions
• Active ingredient synthesis: bromide ion source
• Water treatment: generates hypobromous acid for biocidal control in cooling towers and industrial water systems
• Food and nutrition: pH buffer and mineral supplement carrier in functional formulations
• Preservation systems rely on controlled bromide release to inhibit microbial growth in processed products.

Good to know: Pharmaceutical-grade material is available to USP and BP specifications; technical-grade supply is standard for water treatment and industrial synthesis.

Commercial specifications

• Hydrated grade more common in commercial distribution