High-purity liquid crystal intermediates

1,4-Bis(3,4-dicarboxyphenoxy)benzene dianhydride  17828-53-4

Synonyms:HQDA

Appearance:white to off white powder 

Purity:99%min 

Physical and Chemical Properties

• Molecular Formula: C₂₂H₁₀O₈

• Molecular Weight: 402.31 g/mol

• Melting Point: 216 – 222 °C

• Solubility: Soluble in NMP, DMAc, DMF; insoluble in water

• Storage: Keep sealed, dry, protect from moisture

Applications

• Aromatic dianhydride monomer for high-performance polyimide (PI) resins.

• Used to prepare polyimide films with excellent thermal stability, good mechanical properties, and low dielectric constant.

• Applied in high-temperature insulating materials, electronic packaging, flexible printed circuits (FPC), and aerospace composites.

• HS Code: 2932990090