Description

4,4'-[(1-Methylethylidene)Bis(1,4-Phenyleneoxy)]Bisphthalic Acid is a high-purity aromatic dicarboxylic acid derivative, serving as a critical advanced intermediate for high-performance polymer synthesis. Its value lies in its unique molecular structure, which imparts exceptional thermal stability and mechanical properties to the final materials. This compound is essential for manufacturers in the specialty plastics, high-temperature resins, and advanced coating industries seeking to enhance product performance.

Application

• Polymer Intermediate: A key monomer for the synthesis of high-performance polyimides, polyamides, and polyesters, contributing to superior heat resistance and mechanical strength.
• Epoxy Resin Modifier: Used to modify epoxy resin systems, improving their thermal stability, toughness, and adhesion properties for advanced composite materials.
• Liquid Crystal Polymer (LCP) Production: Serves as a fundamental building block in the manufacture of LCPs for electronics, automotive, and aerospace applications.
• Specialty Coating Formulations: Incorporated into coatings requiring exceptional durability, chemical resistance, and high-temperature performance.
• Pharmaceutical Intermediate: Utilized in the research and development of complex organic molecules and active pharmaceutical ingredients (APIs).
• Adhesive & Sealant Chemistry: Enhances the performance characteristics of high-end industrial adhesives and sealants.

Basic Information

Item	Detail
Product Name	4,4'-[(1-Methylethylidene)Bis(1,4-Phenyleneoxy)]Bisphthalic Acid
CAS No.	38103-05-8
Molecular Formula	C32H22O10
Molecular Weight	566.51 g/mol
Synonyms	Bis[4-(3,4-dicarboxyphenoxy)phenyl]propane dianhydride (BPADA) precursor; 4,4'-(4,4'-Isopropylidenediphenoxy)bis(phthalic acid); 4,4'-(1-Methylethylidene)bis[1,4-phenyleneoxy(2-phthalic acid)]; Bisphenol A diphthalic acid; BPADA acid; Contact for additional synonyms.
EINECS	Contact for details

Quality Control

Our production of 4,4'-[(1-Methylethylidene)Bis(1,4-Phenyleneoxy)]Bisphthalic Acid adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistent quality and reliable performance in your formulations. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure containers are sealed immediately after use to prevent degradation from atmospheric moisture.

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

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