Description

3,3'-Dimethyl-4,4'-Biphenyldicarboxylic Acid is a high-purity aromatic dicarboxylic acid derivative, serving as a critical building block in advanced polymer synthesis and specialty chemical manufacturing. Its value lies in the precise spatial arrangement of its methyl and carboxylic acid functional groups, which enables the creation of materials with tailored thermal, mechanical, and optical properties. This compound is essential for R&D chemists and production engineers in the polymer, liquid crystal, and pharmaceutical intermediate sectors seeking to develop high-performance products.

Application

• Polymer Industry: A key monomer for the synthesis of high-performance polyesters, polyamides, and polyimides, contributing to enhanced thermal stability and mechanical strength in engineering plastics.
• Liquid Crystal Materials: Used as a rigid core component in the production of liquid crystal polymers (LCPs) and display materials, where its molecular structure promotes desired alignment and stability.
• Pharmaceutical Intermediates: Serves as a versatile precursor in the synthesis of complex active pharmaceutical ingredients (APIs) and other bioactive molecules.
• Organic Synthesis & Research: A valuable reagent for constructing complex biphenyl-based architectures in academic and industrial research laboratories.
• Coating & Resin Formulations: Incorporated into specialty coatings and resins to improve chemical resistance, adhesion, and durability.
• Advanced Material Science: Investigated for use in metal-organic frameworks (MOFs) and other functional materials due to its dicarboxylate linker capability.

Basic Information

Product Name	3,3'-Dimethyl-4,4'-Biphenyldicarboxylic Acid
CAS No.	63297-02-9
Molecular Formula	C16H14O4
Molecular Weight	270.28 g/mol
Synonyms	4,4'-Biphenyldicarboxylic acid, 3,3'-dimethyl-; 3,3'-Dimethylbiphenyl-4,4'-dicarboxylic acid; 3,3'-Dimethyl-[1,1'-biphenyl]-4,4'-dicarboxylic acid; Biphenyl-4,4'-dicarboxylic acid, 3,3'-dimethyl-; 3,3'-Dimethyl-4,4'-dicarboxybiphenyl
EINECS	Contact for details

Quality Control

Our 3,3'-Dimethyl-4,4'-Biphenyldicarboxylic Acid is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting standards for research and industrial use. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and consistency.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product quality and performance.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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