4-Aminobenzoic acid 4-aminophenyl ester (APAB) CAS 20610-77-9
APAB CAS 20610-77-9 for Polyimide and Specialty Polymer Synthesis
4-Aminobenzoic acid 4-aminophenyl ester, commonly known as APAB, is an ester-containing aromatic diamine monomer used as a structural building block in high-performance polyimide, polyamide and specialty polymer synthesis. Its aromatic backbone and ester linkage make APAB relevant to polymer systems where molecular rigidity, processability, thermal resistance and mechanical performance need to be balanced.
APAB belongs to the broader category of polyimide diamine monomers and is also part of Aure Chemical’s polyimide diamine monomers supply portfolio. It is typically considered in specialty, processable and heat-resistant polyimide material development, depending on the paired dianhydride, formulation and processing conditions.
Basic Information of APAB
| Product Name | 4-Aminobenzoic acid 4-aminophenyl ester |
|---|---|
| Abbreviation | APAB |
| CAS Number | 20610-77-9 |
| Product Type | Ester-containing aromatic diamine monomer |
| Molecular Formula | C13H12N2O2 |
| Molecular Weight | 228.25 g/mol |
| Appearance | Light yellow to brown powder or crystalline solid |
| Purity | ≥ 99%; final batch data should be confirmed by latest COA |
| Main Application | Specialty, processable and heat-resistant polyimide synthesis |
| Package | 1 kg/bottle, 20 kg/drum, or customized packaging |
| Documents | COA, SDS and TDS available upon request |
| Storage | Keep sealed, dry, and away from moisture |
| Molecular Structure |  |
Key Features in Polyimide Design
Ester-containing aromatic diamine structure, relevant to specialty and processable polyimide diamine monomers.
Aromatic backbone may support molecular rigidity and thermal resistance depending on the paired dianhydride and polymer architecture.
Ester linkage may help adjust processability, polarity and film-forming behavior in selected specialty polymer systems.
APAB can be considered in specialty functional polyimide development where structural monomer design and polymer performance balance are important.
Final material properties depend on monomer purity, dianhydride selection, solvent system, imidization conditions and polymer processing method.
Pairing APAB with Dianhydride Monomers
In polyimide synthesis, APAB may be evaluated with selected polyimide dianhydride monomers to design specialty, processable and heat-resistant PI systems. Rigid aromatic dianhydrides such as BPDA CAS 2420-87-3 or BTDA CAS 2421-28-5 may support thermal resistance and dimensional stability.
Ether-containing dianhydrides such as ODPA CAS 1823-59-2 may help adjust processability and film-forming behavior, while fluorinated dianhydrides such as 6FDA CAS 1107-00-2 may be considered when optical, dielectric or moisture-related properties are part of the target polymer design.
Application Context of APAB in Polyimide Systems
APAB is typically used as a structural diamine monomer rather than a finished application material. It is commonly discussed in specialty, heat-resistant and processable polyimide material development, where aromatic rigidity and ester-containing structure can influence polymer performance.
Specialty functional polyimide development – ester-containing aromatic diamine selection for advanced polymer research.
Flexible and processable polyimide formulations – processability, film formation and polymer design considerations.
High-temperature polyimide applications – thermal resistance and high-performance polymer environments.
Electronics and semiconductor polyimide applications – insulation, thermal endurance and specialty polymer material requirements.
COA, SDS and Technical Documentation
Aure Chemical can provide COA, SDS, TDS, typical specifications and packaging information for APAB CAS 20610-77-9 upon request. Since APAB is an ester-containing aromatic diamine monomer, final purity, appearance and batch-specific data should be confirmed by the latest COA before order confirmation.
Please share the required purity, target specification, quantity, destination country or port, preferred packaging method and required documents so we can review availability, documentation support and export packing options.
Contact Aure Chemical for APAB documentation and quotation support.
Packaging, Logistics & Compliance Capabilities
Aure Chemical provides flexible packaging solutions, compliant logistics arrangements, and controlled storage practices to support laboratory-scale, pilot-scale, and commercial-scale global supply.
Packaging Options
- 25 kg / 50 kg bags (fiber drum, aluminum bag, HDPE drum)
- 100 kg / 200 kg steel or HDPE drums
- 500 kg / 1000 kg IBC containers
- Bulk liquids in ISO tank containers
- Customized packaging upon request
Transportation Modes
- Sea freight (FCL / LCL)
- Air freight for selected products
- Road and rail transportation
- Dangerous & non-dangerous cargo handling
- Incoterms: EXW, FOB, CFR, CIF, DAP, DDP
Storage & Handling
- Dry, cool, and well-ventilated warehouses
- Segregation by hazard class
- FIFO inventory management
- Temperature-controlled storage if required
- Regular inspection & labeling control
Documentation & Compliance
- Safety Data Sheet (SDS)
- Certificate of Analysis (COA)
- Dangerous Goods Declaration (DGD)
- Packing List & Commercial Invoice
- IMDG / IATA / ADR compliant labeling
For packaging customization or logistics consultation, please contact us.
