Property | Value |
Systematic Name | 4,4'-(Hexafluoroisopropylidene)diphthalic anhydride |
Common Name | 6FDA |
CAS Number | 1107-00-2 |
Molecular Formula | C₁₉H₆F₆O₆ |
Molecular Weight | 444.24 g/mol |
Appearance | White to almost white powder to crystal; beige crystal |
Melting Point | 243-249 °C |
Boiling Point | 494.5 ± 45.0 °C (predicted) |
Density | 1.697 ± 0.06 g/cm³ (predicted) |
Solubility | Soluble in acetone; almost transparent in hot acetonitrile; soluble in organic solvents like DMF, DMSO |
Description of 4,4'-(hexafluoroisopropylidene)diphthalicanhydride
4,4'-(Hexafluoroisopropylidene)diphthalic anhydride (6FDA, CAS: 1107-00-2) is a fluorinated dianhydride monomer essential for advanced polymer synthesis. Its fluorinated structure grants the resulting polymers exceptional properties, including outstanding thermal stability, excellent chemical resistance, high mechanical strength, and improved processability due to enhanced organic solubility.
Application of 4,4'-(hexafluoroisopropylidene)diphthalicanhydride
4,4'-(Hexafluoroisopropylidene)diphthalic anhydride (6FDA) is a premier fluorinated dianhydride monomer for synthesizing high-performance polyimides, prized for their exceptional thermal stability (Tg >300°C), low dielectric constants, and optical transparency. In gas separation, 6FDA-based polyimides excel in mixed-matrix membranes for selective CO₂/CH₄ separation and dehydration processes, offering superior permeability and mechanical robustness. For electronics and photonics, it enables low-loss materials in telecommunications, flexible substrates, and OLEDs, while in solar cells, it enhances encapsulation efficiency.
Storage of 4,4'-(hexafluoroisopropylidene)diphthalicanhydride
It should be kept in a sealed, dry, and dark container at room temperature or below 15°C under an inert gas atmosphere, such as nitrogen, to prevent hydrolysis and degradation. Avoid exposure to air, light, or humidity. For optimal long-term stability, refrigerate at 2-8°C. Use desiccators for handling.
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