BPADA (Bisphenol A Diphthalic Anhydride) | CAS 38103-06-9
BPADA (CAS 38103-06-9) is a high-performance dianhydride monomer essential for the synthesis of Polyetherimide (PEI) resins. This white powder building block combines aromatic rigidity with ether-link flexibility, enabling the production of engineering plastics that offer exceptional heat resistance, mechanical strength, and dielectric properties.
Basic Physical Properties
- CAS Number: 38103-06-9
- Chemical Formula: C31H20O8
- Appearance: White to off-white powder
- Melting Point: 188.0 - 192.0 °C
- Molecular Weight: 520.48 g/mol
Technical Specifications
| Test Item |
Standard Specification |
Actual Batch Result |
| Assay (HPLC) |
≥ 99.0% |
99.45% |
| Melting Point |
188.0 - 192.0 °C |
189.5 - 190.8 °C |
| Water Content |
≤ 0.2% |
0.08% |
| Iron (Fe) |
≤ 10 ppm |
3 ppm |
Applications
Aerospace and Transportation
Used for aircraft cabin interiors requiring high flame retardancy and heat stability.
Electronics and Electrical
Primary monomer for high-temperature insulation films and flexible printed circuit boards.
Packaging & Logistics
Standard 25 kg fiber drums. Store in a cool, dry environment. Non-hazardous for international transport. Ensure airtight sealing to prevent moisture absorption.
Synonyms
BPADA, Bisphenol A bis(ether anhydride), 4,4'-(Isopropylidenediphenoxy)bis(phthalic anhydride).
Matching Materials
- m-Phenylenediamine (CAS 108-45-2): Core diamine partner for standard Polyetherimide (PEI) production.
- N-Methyl-2-pyrrolidone (CAS 872-50-4): High-boiling solvent for polycondensation reactions.
- 4,4'-Oxydianiline (CAS 101-80-4): Used to impart extra toughness and flexibility to imide films.
Frequently Asked Questions
How does purity affect final polymer performance?
High purity (≥ 99.0%) ensures consistent chain growth, resulting in superior thermal stability and mechanical integrity.
Is BPADA compatible with standard injection molding?
Yes, as a monomer, it creates PEI resins that are specifically designed for melt-processability including injection molding.
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