High-purity liquid crystal intermediates

3,3',4,4'-Biphenyltetracarboxylic dianhydride  2420-87-3  

Synonyms:BPDA

Appearance:white powder 

Purity:99.9%min 

Ultra-low metal ions

Physical and Chemical Properties

• Molecular formula: C₁₆H₆O₆

• Molecular weight: 294.22 g/mol

• Appearance: White to off-white crystalline powder

• Melting point: 298 – 300 °C

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

• Stability: Hygroscopic, store sealed in dry and cool place

Uses

• Main aromatic dianhydride monomer for high-performance polyimides (PI)

• Provides excellent thermal stability, high Tg, good mechanical strength and low thermal expansion

• Used in high-temperature PI films, motor insulation, flexible printed circuits (FPC), aerospace composites and electronic packaging materials

• HS Code: 2917399090