Sodium bromide stockist and supplier in INDIA and Exporter to Middle East. For use in completion and oil drilling fluids and for industrial use. bromide is a salt with the formula NaBr, widely used as an anticonvulsant in the late 19th and early 20th centuries. Its action is due to the bromide ion (potassium bromide is equally effective). Sodium bromide (NaBr) is a single salt clear brine fluid. It is available in 40% to 46% concentration.