Description

4,4'-(Hexafluoroisopropylidene)Diphthalic Anhydride is a high-performance fluorinated aromatic dianhydride monomer. This compound is valued for its ability to impart exceptional thermal stability, chemical resistance, and low dielectric constant to advanced polymeric materials. It is a critical raw material for manufacturers in the electronics, aerospace, and specialty coatings industries seeking to develop next-generation high-performance products. The CAS number for this compound is provided in the table below.

Application

• Polyimide Synthesis: As a key monomer for producing high-temperature, transparent, and soluble fluorinated polyimides used in flexible printed circuit boards (FPCs), semiconductor coatings, and optical films.
• Advanced Composites: For manufacturing matrix resins in aerospace and military composites that require extreme thermal-oxidative stability and low moisture absorption.
• Gas Separation Membranes: In the fabrication of polyimide membranes with high permeability and selectivity for industrial gas separation processes (e.g., CO2/CH4, O2/N2).
• Low-Dielectric Materials: Development of interlayer dielectric (ILD) materials and encapsulants for microelectronics, leveraging its low dielectric constant to reduce signal delay and crosstalk.
• Adhesives and Coatings: Formulation of high-performance adhesives and protective coatings for harsh environments, offering superior chemical and thermal resistance.
• Liquid Crystal Alignment Layers: Used in the production of polyimide alignment layers for liquid crystal displays (LCDs).

Basic Information

Product Name	4,4'-(Hexafluoroisopropylidene)Diphthalic Anhydride
CAS No.	1107-00-2
Molecular Formula	C19H6F6O6
Molecular Weight	444.24 g/mol
Synonyms	6FDA; 4,4'-(Hexafluoroisopropylidene)bis(phthalic anhydride); 2,2-Bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride; 5,5'-[2,2,2-Trifluoro-1-(trifluoromethyl)ethylidene]bis-1,3-isobenzofurandione; Hexafluorodianhydride; 4,4'-(Hexafluoroisopropylidene)diphthalic acid dianhydride; Bisphenol AF dianhydride; HFDA
EINECS	214-170-0

Quality Control

Our 4,4'-(Hexafluoroisopropylidene)Diphthalic Anhydride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for advanced polymer synthesis. Certificates of Analysis (COA) detailing specific batch results are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic (moisture-sensitive) nature, store under a dry, inert atmosphere (e.g., nitrogen or argon) in a cool, dry place. Recommended storage temperature is 2-8°C for long-term stability. Keep away from fluoride/strong alkali compounds.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 99.0%
Melting Point	240 - 245 °C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm
Chloride (Cl)	≤ 50 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.