Description

4,4'-Dihydroxydiphenyl Ether is a high-purity aromatic diol compound, also known as 4,4'-Oxydiphenol. This versatile chemical intermediate is valued for its symmetrical phenolic structure, which makes it a critical building block for advanced polymer synthesis and specialty chemical manufacturing. It is essential for industries requiring high-performance materials, such as engineering plastics, epoxy resins, and flame retardants, where thermal stability and precise molecular architecture are paramount.

Application

• Polymer Synthesis: A key monomer for producing high-performance polycarbonates, polyesters, and polyarylates with enhanced thermal and mechanical properties.
• Epoxy Resin Systems: Used as a curing agent or co-monomer to modify the flexibility, thermal resistance, and chemical stability of epoxy formulations.
• Flame Retardant Additives: Serves as a precursor in the synthesis of halogen-free, phosphorus-based flame retardants for plastics and textiles.
• Liquid Crystal Polymers (LCPs): An important rigid monomer component in the production of LCPs for electronics and high-temperature applications.
• Pharmaceutical Intermediates: Utilized in the synthesis of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Dyes and Pigments: Acts as an intermediate in the manufacture of high-performance dyes and organic pigments.
• Adhesives and Coatings: Incorporated into formulations to improve adhesion, cross-linking density, and environmental resistance.

Basic Information

Product Name	4,4'-Dihydroxydiphenyl Ether
CAS No.	19650-90-9
Molecular Formula	C12H10O3
Molecular Weight	202.21 g/mol
Synonyms	4,4'-Oxydiphenol; Bis(4-hydroxyphenyl) Ether; 1,1'-Oxybis(4-hydroxybenzene); 4-Hydroxyphenyl Ether; p,p'-Dihydroxydiphenyl Ether; DOD; HQDPE; 4,4'-Dihydroxydiphenyl Oxide
EINECS	243-196-1

Quality Control

Our 4,4'-Dihydroxydiphenyl Ether is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets the high-purity standards required for sensitive applications in polymer and pharmaceutical synthesis. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming specifications for identity, purity, and impurity profiles.

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 strong oxidizing agents, strong acids, and strong bases. The product is light-sensitive; prolonged exposure to light should be avoided.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.5%
Melting Point	160 - 165 °C
Loss on Drying	≤ 0.5%
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.