Potassium bromide

　　Main Uses

　　Medical Field:

　　Formerly used as a sedative and anticonvulsant drug for treating epilepsy, insomnia, neurasthenia, etc. (by inhibiting central nervous system excitability; its action is similar to ammonium bromide but with relatively smaller side effects; clinical use has currently decreased and it has been replaced by safer drugs).

　　Used to prepare mydriatics for ophthalmic examinations or as an excipient for certain drugs.

　　Analysis and Laboratory:

　　Used as an analytical reagent in chemical analysis to determine metal ions such as silver, copper, and lead, or as a bromine source to participate in organic synthesis reactions.

　　Used in spectrophotometry to prepare standard solutions or as a co-solvent to enhance the solubility of certain substances.

　　Used to prepare bromide standard solutions for instrument calibration or verification of analytical methods.

　　Photography and Imaging:

　　An important component of emulsions in traditional film photography; silver bromide (generated by the reaction of potassium bromide and silver nitrate) is sensitive to light and is the core substance of the photosensitive layer in film, used to record images.

　　Other Fields:

　　In petroleum drilling, used as an additive for completion fluids to regulate the density and performance of drilling fluids.

　　Used to prepare potassium bromide windows (in infrared spectroscopy, used as sample cell material due to their good transmittance of infrared light).

CAS NO: 7758-02-3

EC NO: 231-830-3

Molecular Formula: BrK

Molecular Weight: 119.0023

Alias: Potassium bromide, Standard solution;

Structural Formula: