Potassium bromide
General Product Information
| Article | Potassium bromide |
| Synonyms | – |
| CAS No. | 7758-02-3 |
| EEG No. | – |
| EINECS No. | 231-830-3 |
| IMO | – |
| Tariff Code | 28275100 |
| UN No. | – |
| VLG/ADR | – |
Description
Potassium bromide is an inorganic salt commercially available as a white crystalline powder or Colorless crystals. It is Odorless, Highly soluble in water and has a neutral pH in solution. Due to its stable chemical properties and wide applicability, potassium bromide is a versatile product in various industries such as chemical, laboratory and optical technology.
Characteristics
- Odor: Odorless.
- Hygroscopic: –
- Color: White to Colorless.
- Grade: Technical.
- Solubility: Highly soluble in water.
- Shape: Crystalline powder.
Physical & Chemical Properties
| Chemical Structure | KBr |
| Molar Weight | 119 g/mol |
| Melting Point | Approx. 734 °C. |
| Boiling Point | – |
| Density | 2.75 g/cm³ |
| Refractive Index | – |
| pH | 6-7.5 (at 5% solution) |
Applications
Potassium bromide is applied in various ways, for instance:
1. Chemical Industry
Potassium bromide is used in the chemical industry as a raw material for other bromide compounds. In the oil and gas industry, it is used in drilling fluids because of its high Density and stability under harsh conditions.
2. Analytical chemistry & Laboratories
KBr is an essential material in FTIR (Fourier Transform Infrared Spectroscopy) spectroscopy. Thanks to its transparency in the infrared spectrum, it is used to compress samples into transparent IR pellets.
3. Optics
Because of its transparency in the infrared spectrum, KBr is also used in lenses, prisms and windows for optical equipment, especially in spectroscopy devices.
4. Photography
In analog black-and-white photography, potassium bromide is used to form silver bromide in light-sensitive emulsions.
Interessing Links
- CAS Common Chemistry – Potassium Bromide
- European Chemicals Agency (ECHA) – For chemical information and regulations.
- PubChem – Potassium Bromide – Chemical information by the National Library of Medicine of the National Center for Biotechnology Information (NIH-NCBI).
- Wikipedia – Potassium bromide