Product Description
Cuprous bromide (CAS No. 7787-70-4) is an inorganic copper compound that typically appears as a white powder or cubic crystalline solid. It is characterized by its high thermal stability and unique chemical properties, making it a valuable material for various chemical and industrial applications.
Cuprous bromide demonstrates good solubility in hydrochloric acid, hydrobromic acid, and aqueous ammonia, where it forms corresponding complex compounds. It has limited solubility in cold water and remains stable under normal conditions, while decomposition may occur when exposed to hot water or nitric acid. It is insoluble in propyl acetate and concentrated sulfuric acid.
Due to its reliable physical properties and chemical versatility, cuprous bromide is widely used in chemical synthesis, catalyst systems, analytical chemistry, and specialized industrial processes requiring high-quality copper-based materials.

Cuprous bromide Chemical Properties
| Melting point | 504 °C(lit.) |
| Boiling point | 1345 °C |
| Density | 4.71 g/mL at 25 °C(lit.) |
| Fp | 1345°C |
| Storage temp | Keep in dark place,Inert atmosphere,Room temperature |
| Solubility | insoluble in acetone |
| Form | Powder |
| Color | Pale green to green |
| Specific Gravity | 4.98 |
| Water Solubility | Soluble in hydrogen bromide, hydrochloric acid, and ammonium hydroxide. Slightly soluble in water. Insoluble in acetone. |
| Sensitive | Air Sensitive |
| Crystal Structure | Hexagonal, Wurtzite (Zincite) Structure - Space Group P 63mc |
| Merck | 142,659 |
| Solubility Product Constant (Ksp) | pKsp: 8.2 |
| Exposure limits | ACGIH: TWA 1 mg/m3 |
| NIOSH: IDLH 100 mg/m3; TWA 1 mg/m3 | |
| Stability | Stable, but may be air or light sensitive. Incompatible with alkali metals, strong oxidizing agents. |
| InChIKey | NKNDPYCGAZPOFS-UHFFFAOYSA-M |
| CAS DataBase Reference | 7787-70-4(CAS DataBase Reference) |
| NIST Chemistry Reference | Copper(I) bromide(7787-70-4) |
| EPA Substance Registry System | Copper bromide (CuBr) (7787-70-4) |
Safety Information
| Hazard Codes | Xi |
| Risk Statements | 36/37/38-22 |
| Safety Statements | 22-24/25-26-37/39 |
| RIDADR | 3260 |
| WGK Germany | 3 |
| F | 2008/10/23 |
| TSCA | Yes |
| HazardClass | 8 |
| PackingGroup | III |
| HS Code | 28275900 |
| Hazardous Substances Data | 7787-70-4(Hazardous Substances Data) |
Applications of Cuprous Bromide CAS No. 7787-70-4
Cuprous bromide is a versatile copper-based compound widely utilized as a chemical intermediate across multiple industries due to its unique chemical properties and reactivity.
Chemical Synthesis and Catalytic Applications
Cuprous bromide is commonly used as a catalyst and reagent in organic synthesis, supporting various chemical transformations and providing reliable performance in research and industrial reaction systems.
Photography and Advanced Materials
It plays an important role in color photography processes and is also applied in the preparation of specialized laser materials and other advanced functional materials.
Pigment and Dye Industry
In pigment and dye manufacturing, cuprous bromide can serve as a reducing agent, contributing to the production and modification of color-related chemical products.
Electroplating and Battery Applications
Cuprous bromide is utilized in electroplating processes and battery-related applications, where its copper content and chemical stability provide valuable functional properties.
Pharmaceutical and Specialty Chemical Fields
It is also used as an intermediate material in pharmaceutical manufacturing and other specialty chemical processes, supporting the development of various fine chemical products.
With its broad application range and dependable chemical performance, cuprous bromide continues to be an important material in chemical research, industrial manufacturing, and advanced technology sectors.

