High-purity liquid crystal intermediates

4,4'-Oxydiphthalic anhydride  1823-59-2

Synonyms:ODPA

Appearance:white powder 

Purity:99.8%min 

Physical and Chemical Properties

• Molecular formula: C₁₆H₆O₇

• Molecular weight: 310.22 g/mol

• Appearance: White to off-white crystalline powder

• Melting point: 225 – 230 °C

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

• Stability: Hygroscopic, store sealed in dry place

Uses

• Important dianhydride monomer for high-performance polyimides (PI)

• Improves solubility, flexibility, processability and thermal stability of polyimide films

• Used in electronics, aerospace, insulating coatings, flexible circuits and composite materials

• HS Code: 2917399090