1,4-Dibromo-2,5-dimethylbenzene, CAS No. 1074-24-4

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1074-24-4

Catalog No. EBD31812

CAS 1074-24-4

Name 1,4-Dibromo-2,5-dimethylbenzene

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Basic Information

Synonyms: 2,5-dibromo-p-xylene 2,5-Dibromo-1,4-dimethylbenzene 2,5-Dimethyl-1,4-dibromobenzene benzene,1,4-dibromo-2,5-dimethyl- p-Xylene,2,5-dibromo- 2,5-dibromo-4-xylene 1,4-dibromo-2,5-dimethyl-benzen 1,4-Dibromo-2,5-dimethylbenzene

Molecular Formula: C8H8Br2

Molecular Weight: 263.96

MDL Number: MFCD00000091

Categories: Materials Chemistry > Optoelectronic and Organic Semiconductor Materials > OLED and Organic Optoelectronic Precursors Synthetic Chemistry > Organic Building Blocks > Halogenated Compounds

Product Description:

2,5-Dibromo-p-xylene is an organic compound with the molecular formula C8H8Br2. It is a white to off-white crystalline solid characterized by two bromine atoms substituted at the 2 and 5 positions of a p-xylene (1,4-dimethylbenzene) ring. This structure makes it a versatile bifunctional aromatic building block. Its primary and most significant application is as a key synthetic precursor in the field of materials chemistry, particularly for organic electronics. It serves as a crucial starting material for the synthesis of various π-conjugated organic semiconductors, including poly(p-phenylene vinylene) (PPV) derivatives and other luminescent polymers used in organic light-emitting diodes (OLEDs) and organic photovoltaic (OPV) devices. The bromine atoms act as excellent leaving groups in cross-coupling reactions, such as Suzuki or Heck couplings, enabling the construction of extended conjugated systems. Due to its reactive bromomethyl groups, it is also employed as a monomer or intermediate in polymer chemistry and as a versatile organic synthesis building block for constructing more complex molecular architectures, including macrocycles and ligands.

Physical Properties

Melting Point: 72-74 °C(lit.)

Boiling Point: 261 °C(lit.)

Flash Point: 124.2 °C

Density: 1.71 g/cm3

Refractivity: 1.543-1.545

Safety Information

Packing Level: III

Hazard Category: 9

Transport Codes: 3077

Analytical Data

Appearance: white to slightly yellow shiny crystalline powder