Description

[1,1'-Biphenyl]-3,4-Dicarboxylic Acid CAS NO 4445-58-3 is a high-purity aromatic dicarboxylic acid derivative, serving as a critical building block in advanced organic synthesis. Its value lies in its bifunctional structure, which enables the creation of complex polymers and fine chemicals with tailored properties. This compound is essential for R&D chemists and manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries seeking to develop new materials and active ingredients.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel active pharmaceutical ingredients (APIs), particularly for compounds requiring a rigid biphenyl core.
• Polymer Chemistry: Monomer for the production of high-performance polyamides, polyimides, and polyester resins, contributing to thermal stability and mechanical strength.
• Agrochemical Synthesis: Building block for developing advanced herbicides, fungicides, and plant growth regulators.
• Liquid Crystal & OLED Materials: Used in the synthesis of organic semiconductors and liquid crystal compounds for electronic displays.
• Metal-Organic Frameworks (MOFs): Organic linker in the construction of porous coordination polymers for catalysis and gas storage.
• Dye & Pigment Manufacturing: Intermediate for creating complex organic dyes and pigments with specific colorfastness properties.
• Crosslinking Agent: Utilized in epoxy and other thermoset resin systems to enhance crosslink density and performance.
• Research & Development: Versatile reagent in academic and industrial R&D for exploring new chemical entities and reaction pathways.

Basic Information

Product Name	[1,1'-Biphenyl]-3,4-Dicarboxylic Acid
CAS No.	4445-58-3
Molecular Formula	C14H10O4
Molecular Weight	242.23 g/mol
Synonyms	3,4-Biphenyldicarboxylic Acid; 3,4-Dicarboxybiphenyl; Biphenyl-3,4-dicarboxylic Acid; 4-(3-Carboxyphenyl)phthalic Acid; 1,1'-Biphenyl-3,4-dicarboxylic acid; 3,4-Biphenyl Dicarboxylic Acid
EINECS	Contact for details

Quality Control

Our [1,1'-Biphenyl]-3,4-Dicarboxylic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry standards. Certificates of Analysis (COA) documenting all critical parameters are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect quality and handling properties.

Specification

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

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