Description

4-(3,4-Dicarboxyphenoxy)Benzene-1,2-Dicarboxylic Acid is a high-purity, multifunctional aromatic tetracarboxylic acid derivative. This compound serves as a critical advanced intermediate for synthesizing high-performance polymers and specialty chemicals. It is essential for manufacturers in the polyimide, epoxy resin, and specialty plasticizer industries seeking to enhance material properties like thermal stability and mechanical strength.

Application

• Polyimide Monomer: A key building block for high-temperature, high-strength polyimide resins used in aerospace, electronics, and flexible display substrates.
• Epoxy Curing Agent/Modifier: Imparts superior heat resistance and mechanical properties to advanced epoxy systems for composites and coatings.
• Specialty Plasticizer Synthesis: Used to produce high-molecular-weight plasticizers with low volatility and excellent permanence for demanding PVC applications.
• Liquid Crystal Polymer (LCP) Intermediate: Contributes to the rigid backbone of LCPs for precision molded components and high-barrier packaging films.
• Pharmaceutical Intermediate: Serves as a sophisticated synthon in the research and development of complex active pharmaceutical ingredients (APIs).
• Metal-Organic Framework (MOF) Precursor: Utilized in the synthesis of novel porous materials for gas storage, separation, and catalysis.
• Crosslinking Agent: For specialty adhesives, inks, and coatings requiring enhanced chemical and thermal resistance.

Basic Information

Product Name	4-(3,4-Dicarboxyphenoxy)Benzene-1,2-Dicarboxylic Acid
CAS No.	7717-76-2
Molecular Formula	C22H14O9
Molecular Weight	422.34 g/mol
Synonyms	4-(3,4-Dicarboxyphenoxy)phthalic Acid; 3,3',4,4'-Biphenyltetracarboxylic Acid 1,2:1',2'-Dianhydride, Phenoxy Derivative (precursor); 1,2,4,5-Benzenetetracarboxylic Acid, 1,2:4,5-Dianhydride, 3-(3,4-Dicarboxyphenoxy)-; Benzene-1,2-dicarboxylic acid, 4-(3,4-dicarboxyphenoxy)-; [1,1'-Biphenyl]-3,3',4,4'-tetracarboxylic Acid, 2'-Phenoxy-; Tetracarboxy Diphenyl Ether; Contact for details on additional trade names.
EINECS	Contact for details

Quality Control

Our 4-(3,4-Dicarboxyphenoxy)Benzene-1,2-Dicarboxylic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications. Certificates of Analysis (COA) documenting purity, assay, and impurity profiles are provided with every shipment to guarantee traceability and consistent batch-to-batch quality.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic nature, store in a cool, dry place at a controlled room temperature (15-25°C). For long-term storage, consider using desiccants or storing under an inert atmosphere to prevent moisture absorption and potential degradation. Keep away from incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%
Single Unknown Impurity (HPLC)	≤ 0.5%
Total Impurities (HPLC)	≤ 2.0%

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