Diboron Tetrabromide (B2Br4) or Tetrabromo-1,2-diboraethane is a chemical compound that contains boron and bromine. It is a yellow-brown solid and is used as an intermediate in organic synthesis and as a flame retardant.
| IUPAC Name | Diboron Tetrabromide |
| Molecular Formula | B2Br4 |
| CAS Number | 10294-34-5 |
| Synonyms | Boron tribromide dioxide; Dibromoboron tetrabromide; Boron bromide dioxide, Tetrabromo-1,2-diboraethane |
| InChI | InChI=1S/2B.4BrH/h21H;/q2-2;; |
Diboron Tetrabromide Properties
Diboron Tetrabromide Formula
The chemical formula for diboron tetrabromide is B2Br4 or Tetrabromo-1,2-diboraethane.
Diboron Tetrabromide Molar Mass
The molar mass of Tetrabromo-1,2-diboraethane (B2Br4) is 341.2 g/mol. It is calculated by adding the atomic masses of each element in the compound, taking into account the number of atoms of each element present.
Diboron Tetrabromide Boiling Point
The boiling point of Tetrabromo-1,2-diboraethane is not widely reported in scientific literature. However, the boiling point of boron compounds in general is known to be high due to the strong covalent bonds between the atoms.
Diboron Tetrabromide Melting Point
The melting point of Diboron Tetrabromide is approximately 105°C. This temperature is relatively low compared to other boron compounds due to the relatively weak bonds between the boron and bromine atoms.
Tetrabromo-1,2-diboraethane Density g/mL
The density of Diboron Tetrabromide is not widely reported in scientific literature. However, it is expected to be a dense compound due to the high atomic mass of boron and the heavy bromine atoms.
Diboron Tetrabromide Molecular Weight
The molecular weight of B2Br4 is 341.2 g/mol, which is calculated by adding the atomic masses of each element in the compound, taking into account the number of atoms of each element present.
Tetrabromo-1,2-diboraethane Structure
The structure of Tetrabromo-1,2-diboraethane can be represented as B2Br4. It contains two boron atoms and four bromine atoms, forming a tetrahedral shape. The boron and bromine atoms are bonded covalently, with the bromine atoms surrounding the boron atoms in a tetrahedral arrangement.
| Appearance | Yellow-brown solid |
| Specific Gravity | Not available |
| Color | Yellow-brown |
| Odor | Not available |
| Molar Mass | 341.2 g/mol |
| Density | Not available |
| Melting Point | 105°C |
| Boiling Point | Not available |
| Flash Point | Not available |
| Water Solubility | Not available |
| Solubility | Not available |
| Vapor Pressure | Not available |
| Vapor Density | Not available |
| pKa | Not available |
| pH | Not applicable |
Tetrabromo-1,2-diboraethane Safety and Hazards
Tetrabromo-1,2-diboraethane (B2Br4) is considered a hazardous chemical and should be handled with care. It can irritate the skin and eyes and may cause respiratory issues if inhaled. Proper protective equipment, such as gloves and eye protection, should be worn when handling the compound. Storage in a well-ventilated area and proper disposal is important to minimize risk to people and the environment. It is recommended to consult the Material Safety Data Sheet (MSDS) for detailed information on the safe handling and disposal of B2Br4.
| Hazard Symbols | Danger |
| Safety Description | S26, S36/37/39, S45 |
| UN IDs | UN3287 |
| HS Code | 2826.90.90 |
| Hazard Class | 8 |
| Packing Group | III |
| Toxicity | Irritant, respiratory irritant |
Diboron Tetrabromide Synthesis Methods
Tetrabromo-1,2-diboraethane (B2Br4) can be synthesized through a number of methods. One common method involves the reaction of boron tribromide (BBr3) with boron powder in a high-temperature environment. This reaction results in the formation of Tetrabromo-1,2-diboraethane and elemental boron. Another method involves the reaction of boron trichloride (BCl3) and hydrogen bromide (HBr) in a high-temperature, low-pressure environment, which results in the formation of Tetrabromo-1,2-diboraethane and hydrogen chloride (HCl). It is important to note that these reactions should be conducted in a controlled laboratory environment with proper safety measures in place to minimize risk to people and the environment.
Tetrabromo-1,2-diboraethane Uses
Industrial sectors utilize Tetrabromo-1,2-diboraethane (B2Br4) for its chemical properties. The substance serves as a flame retardant in polymer materials, textiles, and electronics production. It also acts as a catalyst in the production of alkyl bromides, which serve as intermediate chemicals for pharmaceuticals, insecticides, and other products. Moreover, Tetrabromo-1,2-diboraethane functions as a high-temperature lubricant in high-stress applications such as metal forming and extrusion processes. However, proper handling and disposal must occur to minimize potential risks to individuals and the environment.
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