... the preparation of photographic emulsions and developers, in pharmaceutical preparations,ect. Formula: KBr M.W.:119.0Usage ... the preparation of photographic emulsions and developers, in pharmaceutical preparations, as a wood preservative, for water ... medicine. Package: 25kg woven bags Specification: Items Potassium Bromide(KBr)Industry GradeMedicine GradePhoto GradeAppearanceWhite CrystalAssay, %99.0 ...