Description

Diphenic Acid is a high-purity organic compound, also known as biphenyl-2,2'-dicarboxylic acid, serving as a critical building block in advanced chemical synthesis. Its bifunctional aromatic structure makes it a valuable intermediate for creating complex molecules with tailored properties. This product is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries seeking reliable, high-quality raw materials for their development and production processes.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds requiring a rigid, biphenyl-based core structure.
• Ligand Synthesis: Used to prepare chelating agents and ligands for catalysis and metal-organic frameworks (MOFs).
• Polymer Chemistry: Serves as a monomer or chain extender in the production of high-performance polyesters, polyamides, and other engineering plastics.
• Agrochemicals: Intermediate in the manufacture of certain herbicides and plant growth regulators.
• Dye & Pigment Manufacturing: Building block for synthesizing specific organic dyes and colorants.
• Research & Development: Versatile starting material in organic chemistry research for novel compound libraries and material science applications.

Basic Information

Product Name	Diphenic Acid
CAS No.	482-05-3
Molecular Formula	C14H10O4
Molecular Weight	242.23 g/mol
Synonyms	2,2'-Biphenyldicarboxylic Acid; Biphenyl-2,2'-dicarboxylic Acid; [1,1'-Biphenyl]-2,2'-dicarboxylic Acid; o,o'-Biphenyldicarboxylic Acid; 2-Carboxybiphenyl-2'-carboxylic Acid; Diphenyl-2,2'-dicarboxylic Acid
EINECS	207-570-6

Quality Control

Our Diphenic Acid is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets the high standards required for research and industrial use. We provide a detailed Certificate of Analysis (COA) with every shipment, confirming identity, purity, and conformance to agreed specifications. Our quality commitment supports applications requiring traceability and consistent performance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents and bases. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	228 - 232 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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