Overview
Potassium bromide (CAS 7758-02-3 ), commonly identified by its formula abbreviation KBr, is an inorganic bromide salt used across pharmaceutical, industrial, and specialty chemical manufacturing. It functions as a source of bromide ion in synthesis and a flame retardant additive.
This versatile compound also serves as a process chemical in photographic and printing applications. In pharmaceutical manufacturing, KBr serves as an intermediate in the synthesis of active ingredients and as a buffering agent in formulation development.
Printing and packaging operations use it as a component in photographic emulsions and plate processing chemistry. In these applications, controlled bromide concentration governs image quality and development rates during the production cycle.
Plastics and polymer producers incorporate it as a flame retardant precursor, particularly in systems requiring halogen-based fire suppression. In catalytic applications, KBr acts as a catalyst modifier or precursor in oxidation and bromination reactions.
These chemical processes influence selectivity in fine chemical synthesis for various industrial sectors. Potassium bromide is supplied as a white crystalline powder or granules depending on the specific application requirements of the end user.
Pharmaceutical-grade material is available to USP and BP specifications, supporting regulated manufacturing environments. This ensures compliance with international quality standards for medicinal and therapeutic product development.
Technical-grade product is also offered for industrial process use where pharmacopeial certification is not required. This grade provides a cost-effective solution for large-scale manufacturing, photography, and polymer additive applications.
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Physical Properties
| Melting Point | 730 °C |
| Boiling Point | 1435 °C |
| Density | 2.75 g/cm³ @ Temp: 25 °C |
| Flash Point | 1435°C |
| Appearance | White, crystalline granules or pow- der; pungent, strong, bitter, saline taste; somewhat hygroscopic.Solu- ble in water and glycerol; slightly soluble in alcohol and ether. |
| Color | White |
| Form | random crystals |
| Water Solubility | 650 g/L (20 ºC) |
| Vapor Pressure | 175 mm Hg ( 20 °C) |
| Refractive Index | 1.559 |
| pH | 5.0-8.8 (25℃, 50mg/mL in H2O) |
| Log P | 1 at 25℃ |
Safety & Handling
Warning GHS07 Hazard Statements H315 Causes skin irritation H319 Causes serious eye irritation H335 May cause respiratory irritation Precautionary Statements P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P332+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| HS Code | 28275100 |
| UN Number | 1744 |
| ADR Class | 8 |
| Packing Group | I |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 2 |
Other Names
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Chemical Properties
- CAS Number
- 7758-02-3
- EC Number
- 231-830-3
- Mol. Weight
- 119.00
- HS Code
- 28275100
- Category
- Pharmaceutical Intermediates