Potassium bromide is a colorless crystalline or white powdery inorganic compound, which has the characteristics of easy solubility in water, stable chemical properties, good transparency, and excellent flame retardancy. It is widely used in multiple industries such as optics, medicine, chemical engineering, and analytical testing. The specific application areas are as follows:
Optical and Infrared Detection Industry
       This is the core application area of potassium bromide. Potassium bromide crystals have extremely high opacity in the mid infrared band (4000-400 cm ⁻¹) and do not produce strong absorption peaks, making them a standard substrate for preparing infrared spectroscopic analysis tablets.
       When testing, a little amount of the sample to be tested is mixed with potassium bromide powder, ground and pressed into a transparent sheet, and placed in an infrared spectrometer to obtain the functional group absorption spectrum of the sample clearly. It is widely used for structural identification of organic compounds and polymer materials.
In addition, potassium bromide can also be used to manufacture optical glass, lenses, and polyhedral lenses, improve the transparency and refractive index stability of optical components, and meet the manufacturing needs of infrared optical instruments and laser equipment.
Pharmaceutical and daily chemical industry
       In the pharmaceutical field, potassium bromide has been used as a sedative hypnotic drug to regulate central nervous system excitability and alleviate symptoms of anxiety and insomnia; At present, it is more commonly used in the preparation of veterinary sedatives or as a pharmaceutical intermediate for the synthesis of other bromide drugs.
       In the field of daily chemical products, it can be added to perm agents and hair dyes as a brominating agent to adjust the pH value of the agent and enhance the styling effect of the perm agent; At the same time, it has a certain bactericidal and bacteriostatic effect and can be used in the formula of oral care products (such as mouthwash).
Chemical and flame retardant materials industry
       Inorganic Bromide Synthesis Raw Materials: As an important bromine source, it is used to prepare other bromides such as sodium bromide, ammonium bromide, magnesium bromide, etc. It can also be used to produce mixed solutions of potassium bromide and bromine as bromination reagents in chemical reactions.
       Flame retardant production: Potassium bromide can be used as a flame retardant additive in the manufacture of flame retardant plastics, rubber, and textiles. The principle is to decompose and produce bromine free radicals at high temperatures, capture active free radicals in combustion reactions, inhibit combustion chain reactions, improve the flame retardant level of materials, and adapt to the production needs of electronic and electrical casings and building flame retardant materials.
Analysis, Testing, and Laboratory Research Industry
       As a benchmark reagent for spectral analysis, it is used to calibrate the detection accuracy of instruments such as flame photometers and atomic absorption spectrometers, ensuring the accuracy of metal ion (such as potassium ion) content detection data.
       It can be used to prepare buffer solution and electrolyte solution, and adjust the ionic strength of the solution in electrochemical experiments and water quality detection; In agricultural soil testing, it can be used to extract effective nutrients from soil and assist in analyzing soil fertility.
Other special industries
       Photography industry: Used to prepare developing and fixing solutions for photographic films, as halogenating agents to adjust the development speed, improve the clarity and stability of film imaging.
       Petroleum drilling industry: It can be used as an additive in drilling fluid to adjust the density and viscosity of drilling fluid, suppress the expansion of formation clay, prevent wellbore collapse, and adapt to drilling operations in deep wells and complex formations.

Relevant articles