- Product Name: Potassium Bromide
- CAS: 7758-02-3
- Catalog: HG-BULK031
- Applications: Spectral Analysis, Analytical Chemistry, Photographic Industry.
Potassium bromide (KBr) is a white crystalline salt or colorless crystal. Known for its extensive use in various scientific applications, it is commonly used in fields ranging from analytical chemistry to photographic development.
Key Features
Photosensitivity
- It turns yellow upon exposure to light.
Hygroscopicity
- Slightly hygroscopic, meaning it can absorb moisture from the air.
Solubility
- 1g of KBr dissolves in 1.5 ml of water at room temperature. It is also soluble in boiling water (1 ml) and glycerol (4.6 ml).
Irritancy
- It can be irritating to the skin, eyes, and mucous membranes.
Technical Data
| Items | Specification |
| Content | ≥ 99.5% |
| Sulfate (as SO42-) | ≤ 0.01% |
| Iodide | ≤ 0.006% |
| Iron (as Fe) | ≤ 4ppm |
| Bromate (as BrO3-) | ≤ 0.003% |
| Moisture | ≤ 0.3% |
| Chloride (as Cl-) | ≤ 0.1% |
| Heavy Metals (as Pb) | ≤ 4ppm |
| Ammonia | ≤ 15ppm |
| Aqueous Solution Transmittance | 93-100 (410nm) |
| pH | 6.0-7.5 |
Applications
Alfa Chemistry's potassium bromide is widely used in various scientific and industrial applications, including:
Spectral Analysis
- Potassium bromide is a crucial component in infrared (IR) spectroscopy. It is often used in the production of IR sample discs due to its high transparency to infrared radiation, making it ideal for preparing sample mixtures that need to be analyzed for their molecular structures.
Analytical Chemistry
- Titration: Potassium bromide plays a significant role in titrimetric analysis for the determination of metals such as copper and silver.
- Polarography: It is employed in polarographic techniques for analyzing indium, cadmium, and arsenic in environmental and industrial testing.
Photographic Industry
- In photographic processes, potassium bromide is used as a developer. It contributes to film development by reacting with silver halides to produce images on photographic plates or films, ensuring the formation of high-quality photographic prints.
Other Applications
- Due to its mild antiseptic properties, it is sometimes included in medicinal formulations, particularly in anti-seizure treatments or other topical solutions. It is also involved in chemical synthesis for producing other bromide compounds.
Storage and Packaging
- Storage Conditions: Stored in a cool, dry place, away from moisture and light to prevent the formation of yellow discoloration caused by light exposure.
Alfa Chemistry provides high-quality potassium bromide (KBr) for laboratory and industrial use, ensuring reliable performance in applications ranging from spectral analysis to photography. For more information, please feel free to contact us.
