4 4-Dibromobiphenyl CAS 92-86-4

1. 4,4-Dibromobiphenyl CAS 92-86-4 is primarily used as a key monomer or intermediate in the synthesis of conjugated polymers, liquid crystals, and organic electronic materials such as OLEDs and semiconductors.
2. 4,4-Dibromobiphenyl serves as a versatile building block in cross-coupling reactions (e.g., Suzuki, Yamamoto) to produce poly(p-phenylene) derivatives and other biphenyl-based polymers.
3. 4,4-Dibromobiphenyl functions as a flame retardant additive, a precursor for ligands in coordination chemistry, and an intermediate in pharmaceutical and agrochemical synthesis.

1. Store 4,4-dibromobiphenyl CAS 92-86-4 in a cool, dry, well-ventilated area, protected from light and moisture, in tightly sealed, amber glass containers to prevent degradation.
2. Keep 4,4-dibromobiphenyl separate from strong oxidizing agents, strong bases, and reactive metals to prevent hazardous decomposition or reactions.
3. Handle 4,4-dibromobiphenyl with care to minimize dust generation; ensure containers are clearly labeled and kept closed when not in use.

1. Immediately isolate the spill area and ensure adequate ventilation; carefully contain the spill to prevent 4,4-dibromobiphenyl CAS 92-86-4 dust from becoming airborne.
2. Collect spilled 4,4-dibromobiphenyl using a clean, dry tool or a HEPA-filter vacuum cleaner, and place it into a suitable, sealable container for disposal.
3. Clean the contaminated surface thoroughly with plenty of water; collect all contaminated materials (absorbents, wash water) and dispose of them in accordance with local environmental regulations for halogenated hazardous waste.

1. 4,4-Dibromobiphenyl CAS 92-86-4 may cause skin irritation, serious eye irritation, and respiratory tract irritation upon exposure to dust or aerosols.
2. 4,4-Dibromobiphenyl is harmful if swallowed or inhaled, and prolonged or repeated exposure may cause damage to specific organs; brominated compounds can be persistent environmental pollutants.
3. Always consult the Safety Data Sheet (SDS) for specific toxicological information and wear appropriate personal protective equipment (PPE), including dust masks, safety goggles, gloves, and protective clothing.