High-purity liquid crystal intermediates

1,3-Dimethyl-Cyclobutane-1,2,3,4-Tetracarboxylic Dianhydrid  137820-87-2

Synonyms:DMCBDA

Appearance:white solid 

Purity:99%min 

Physical and Chemical Properties

• Molecular Formula: C₁₀H₈O₆

• Molecular Weight: 224.17 g/mol

• Appearance: White to off-white crystalline powder

• Melting Point: >300 °C (lit.)

• Boiling Point: 456.5 ± 45.0 °C (predicted)

• Density: 1.635 ± 0.06 g/cm³ (predicted)

• Solubility: Soluble in polar aprotic solvents (DMF, DMAc, NMP); insoluble in water

• Stability: Stable under normal conditions; hygroscopic, store in dry, sealed containers

Uses

• High-Performance Polyimide Monomer: Key dianhydride for synthesizing polyimides with excellent thermal stability, low dielectric constant, and good mechanical properties

• Electronic Materials: Applied in high-temperature insulating films, photosensitive polyimides, and advanced packaging materials for microelectronics

• Aerospace & Composites: Used in high-temperature resistant composite materials and structural adhesives

HS Code

• HS Code: 2917200000