Description

4,4 CAS NO 6442-08-6 is a high-purity chemical intermediate, also known as 4,4'-Dihydroxybiphenyl, valued for its symmetrical biphenyl structure and dual phenolic hydroxyl groups. This compound is essential for synthesizing advanced polymers, liquid crystals, and specialty additives where thermal stability and precise molecular architecture are critical. It serves as a key building block for R&D and production in the polymer, electronics, and fine chemical industries.

Application

• Polymer Synthesis: A crucial monomer for producing high-performance engineering plastics, polyesters, and polycarbonates requiring enhanced thermal and mechanical properties.
• Liquid Crystal Materials: Serves as a core intermediate in the manufacture of liquid crystal displays (LCDs) and other advanced optoelectronic components.
• Pharmaceutical Intermediates: Used in the synthesis of certain active pharmaceutical ingredients (APIs) and complex organic molecules.
• Antioxidant & Stabilizer Precursor: Acts as a starting material for synthesizing antioxidants used in plastics, rubber, and lubricants to prevent degradation.
• Dye & Pigment Manufacturing: Employed in the production of specific dyes and organic pigments due to its conjugated biphenyl system.
• Cross-linking Agent: Utilized in epoxy resin systems and other thermosetting polymers to improve cross-link density and performance.
• Research & Development: A valuable compound for academic and industrial research in material science and organic chemistry.

Basic Information

Product Name	4,4 CAS NO 6442-08-6
CAS No.	6442-08-6
Molecular Formula	C12H10O2
Molecular Weight	186.21 g/mol
Synonyms	4,4'-Dihydroxybiphenyl; 4,4'-Biphenol; [1,1'-Biphenyl]-4,4'-diol; p,p'-Dihydroxybiphenyl; 4,4'-Biphenyldiol; Biphenyl-4,4'-diol; p,p'-Biphenol; DOD
EINECS	229-236-1

Quality Control

Our 4,4 CAS NO 6442-08-6 is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC and GC, to ensure high purity and consistency. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with every shipment to support your quality assurance protocols.

Storage

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

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 99.0%
Melting Point	274 - 280 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Related Substances (HPLC)	Total impurities ≤ 1.0%

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