CAS · 7758-02-3
Product Overview
Potassium bromide is a high-purity analytical-reagents supplied for industrial and specialty chemical applications. Contact our team for specifications, packaging options and lead times.
Product Specifications
| Property | Specification |
|---|---|
| Grade | Technical grade |
| Appearance | White solid |
| KBr (on dried basis) | 98.5% min |
| Water | 0.5% max |
| pH (5%) | 5.5 – 10 |
| Chloride (Cl⁻) | 1.5% max |
| Sulfate (SO₄) | 0.1% max |
| Bromate (BrO₃) | 0.03% max |
| Iodide (I⁻) | 0.005% max |
| Lead (Pb) | 0.001% max |
| Iron (Fe) | 0.005% max |
| Copper (Cu) | 0.001% max |
Applications
1. Pharmaceuticals and Medicine
● Anticonvulsant: Historically, potassium bromide was widely used as an antiepileptic drug, particularly in the 19th and early 20th centuries. It was effective in treating generalized tonic-clonic and partial seizures.
● Sedative: It has mild sedative and hypnotic effects, attributed to the bromide ion, which can depress the central nervous system (CNS). While less common today due to the availability of modern drugs, it is still used veterinarily, especially in dogs for epilepsy treatment.
2. Infrared (IR) Spectroscopy
● Optical window material: Potassium bromide丨CAS 7758-02-3 is extensively used in IR spectroscopy as a transparent matrix. It is ground and mixed with samples to form pellets or discs, which are transparent to infrared radiation.
● High transparency range: KBr transmits in the 4000–400 cm⁻¹ region, making it an ideal choice for qualitative and quantitative IR analyses.
3. Photography and Film Processing
● In photographic emulsions, KBr acts as a restrainer, helping to control grain size and improve image clarity. It was historically important in black-and-white photography.
4. Chemical Reagent and Intermediate
● Laboratory use: It serves as a source of bromide ions in various chemical reactions, including halide exchange and precipitation reactions.
● Precursor in synthesis: It is used in the preparation of silver bromide (AgBr), which is light-sensitive and used in photographic films.
5. Veterinary Medicine
● Potassium bromide remains in use to treat canine epilepsy, particularly when phenobarbital is not well tolerated. It is favored for its long half-life and reliable seizure control in dogs.
Benefits
1. High Purity and Stability
Potassium bromide丨CAS 7758-02-3 is chemically stable and available in high-purity grades, especially important in spectroscopy and pharmaceutical applications.
2. Excellent Infrared Transparency
Its wide transmission range in the infrared spectrum makes it ideal for IR spectroscopy, enabling clear and precise analysis of organic compounds.
3. Cost-Effective Anticonvulsant (Veterinary)
In veterinary use, it is a cost-effective and well-tolerated treatment for seizures, with minimal liver toxicity compared to other antiepileptics.
4. Non-Hygroscopic Optical Grade
High-grade potassium bromide used for optical purposes is non-hygroscopic, improving shelf life and usability in analytical instruments.
Previous
1-Decanesulfonic Acid Sodium Salt丨CAS 13419-61-9
Next
Conclusion
A concise summary and suitability assessment for this product is available on request. Contact our team to discuss whether it fits your process and quality requirements.