Cuprous bromide
Copper(I) bromide
CAS: 7787-70-4
Molecular Formula: BrCu
Cuprous bromide - Names and Identifiers
| Name | Copper(I) bromide |
| Synonyms | COPPER BROMIDE Bromocopper(I) Cuprous bromide Copper(I)bromide COPPER(+1)BROMIDE Copper(I) bromide COPPER(I) BROMIDE Copperbromideoffwhitepowder |
| CAS | 7787-70-4 |
| EINECS | 232-131-6 |
| InChI | InChI=1/BrH.Cu/h1H;/q;+1/p-1 |
| InChIKey | NKNDPYCGAZPOFS-UHFFFAOYSA-M |
Cuprous bromide - Physico-chemical Properties
| Molecular Formula | BrCu |
| Molar Mass | 143.45 |
| Density | 4.71g/mLat 25°C(lit.) |
| Melting Point | 504°C(lit.) |
| Boling Point | 1345 °C |
| Flash Point | 1345°C |
| Water Solubility | Soluble in hydrogen bromide, hydrochloric acid, and ammonium hydroxide. Slightly soluble in water. Insoluble in acetone. |
| Appearance | Bright green powder |
| Specific Gravity | 4.98 |
| Color | Pale green to green |
| Exposure Limit | ACGIH: TWA 1 mg/m3NIOSH: IDLH 100 mg/m3; TWA 1 mg/m3 |
| Solubility Product Constant(Ksp) | pKsp: 8.2 |
| Merck | 14,2659 |
| Storage Condition | Keep in dark place,Inert atmosphere,Room temperature |
| Stability | Stable, but may be air or light sensitive. Incompatible with alkali metals, strong oxidizing agents. |
| Sensitive | Air Sensitive |
| MDL | MFCD00010969 |
| Physical and Chemical Properties | Density 4.71 melting point 504°C boiling point 1345°C |
| Use | Used as raw materials for organic synthesis and reaction catalysts |
Cuprous bromide - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R22 - Harmful if swallowed |
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection |
| UN IDs | 3260 |
| WGK Germany | 3 |
| FLUKA BRAND F CODES | 8-10-23 |
| TSCA | Yes |
| HS Code | 28275900 |
| Hazard Class | 8 |
| Packing Group | III |
Cuprous bromide - Upstream Downstream Industry
| Downstream Products | 1-Bromo-3,4-difluorobenzene |
Cuprous bromide - Nature
Open Data Verified Data
White cubic crystal or powder. The relative density is 4. 98, the melting point is 497 ℃, the boiling point is 1345 ℃, the thermal conductivity is 1. 25W/(m.K), and the coefficient of thermal expansion is 15.4 × 10-6/K. In the air slowly oxidized to green, in hydrobromic acid, hydrochloric acid, nitric acid and ammonia, hot water decomposition, insoluble in acetone, acetic acid and boiling sulfuric acid.
Last Update：2024-01-02 23:10:35
Cuprous bromide - Preparation Method
Open Data Verified Data
The copper sulfate and potassium bromide solution were mixed, and then sulfur dioxide was added for reaction. The reaction mixture was washed, filtered and dried to obtain a finished cuprous bromide product.
Last Update：2022-01-01 10:59:17
Cuprous bromide - Introduction
Decompose in hot water and nitric acid. Soluble in hydrochloric acid, hydrobromic acid and ammonia to form a complex, slightly soluble in cold water, almost insoluble in acetone and concentrated sulfuric acid. It's irritating.
Last Update：2022-10-16 17:28:50
Cuprous bromide - Use
Open Data Verified Data
used in color photography, battery, organic reaction catalyst and nylon stabilizer.
Last Update：2022-01-01 10:59:16
Cuprous bromide - Safety
Open Data Verified Data
glass bottles, 500g net weight per bottle, and then concentrated in the liner inside the wooden box, or in a barrel lined with polyethylene plastic bag, 25kg or 50kg net per barrel. Store in a cool, dry, ventilated warehouse, sealed, away from the heat source and the fire, and the combustible and oxidant Isolation storage and transport, handling light handling, to prevent damage to the packaging container. When there is a fire, it can be suppressed by dry sand, dry powder and various kinds of fire extinguishing.
Last Update：2022-01-01 10:59:18
Cuprous bromide - Reference Information
| crystal Structure | Hexagonal, Wurtzite (Zincite) Structure - Space Group P 63mc |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Overview | cuprous bromide is a white powder or cubic crystal with a melting point of 498 °c and a boiling point of 1345 °c. It is soluble in hydrochloric acid, hydrobromic acid and ammonia, slightly soluble in cold water, decomposed in hot water and nitric acid, insoluble in propyl ester and concentrated sulfuric acid. |
| Chemical reaction | cuprous bromide can form adducts with soft Lewis bases, such as dimethyl sulfide, colourless CuBr(S(CH3)2) is formed. The complex is a raw material for the preparation of other organic copper compounds. The copper has a two-coordinate linear structure therein. CuBr S(CH3)2 → CuBr(S(CH3)2) cuprous bromide is a brominating reagent in the Sandmeyer reaction, for conversion of aromatic diazonium salts to bromide: ArN2 CuBr → ArBr N2 Cu |
| Application | cuprous bromide product is an important chemical raw material, which can be used for color photography, laser preparation, chemical and chemical reagents, catalysts in organic synthesis, pigments, reducing agents in the dye industry and applications in the battery, electroplating and pharmaceutical industries. |
| preservation method | cuprous bromide should be stored under dry nitrogen or argon and placed in a cool place. |
| purpose | for color photography, battery. Used as organic reaction catalyst and nylon stabilizer. used as raw materials for organic synthesis and reaction catalysts, etc. used as analytical reagents and catalysts |
| production method | copper sulfate and potassium bromide solution are mixed, then sulfur dioxide is added for reaction, and the reactants are washed, filtered, after drying, a finished cuprous bromide product was obtained. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 02:00:11
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Downstream Products for Cuprous bromide