Description

4-Hydroxyphenyl 4-Hydroxybenzoate is a high-purity phenolic ester compound, also known as 4,4'-Dihydroxydiphenyl benzoate. This specialty chemical serves as a versatile intermediate and building block in advanced organic synthesis, valued for its symmetrical dihydroxy aromatic structure. It is primarily utilized by manufacturers in the pharmaceutical, polymer, and fine chemical industries for developing active pharmaceutical ingredients (APIs), liquid crystal polymers, and high-performance additives.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs), particularly those requiring symmetrical bisphenol structures.
• Polymer Science: Used as a monomer or chain extender in the production of high-performance engineering plastics, liquid crystalline polymers (LCPs), and polyarylates.
• Fine Chemical Synthesis: Serves as a versatile precursor for creating antioxidants, UV stabilizers, and other specialty additives for material science applications.
• Research & Development: Employed in academic and industrial R&D laboratories for exploring new organic reactions and material properties.
• Crosslinking Agent: Functions as a potential crosslinker in epoxy resin systems and other thermosetting polymers to enhance thermal and mechanical properties.

Basic Information

Product Name	4-Hydroxyphenyl 4-Hydroxybenzoate
CAS No.	28084-48-2
Molecular Formula	C13H10O4
Molecular Weight	230.22 g/mol
Synonyms	4,4'-Dihydroxydiphenyl benzoate; 4-Hydroxyphenyl 4-hydroxybenzoate; Benzoic acid, 4-hydroxy-, 4-hydroxyphenyl ester; p-Hydroxyphenyl p-hydroxybenzoate; 4-Hydroxybenzoic acid 4-hydroxyphenyl ester; 1,4-Phenylene 4-hydroxybenzoate; 4-Carboxyphenyl 4-hydroxybenzoate (tautomeric form); DHDPhB
EINECS	Contact for details

Quality Control

Our 4-Hydroxyphenyl 4-Hydroxybenzoate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation by FT-IR and melting point determination, to ensure it meets exacting standards for use in sensitive applications. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing all critical parameters. Custom synthesis and specific purity grades (e.g., >98%, >99%) are available to meet your project requirements.

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). This compound is light-sensitive and should be stored away from direct light exposure. Keep container tightly sealed when not in use to minimize contact with air and moisture. For long-term storage, consider using an inert atmosphere to prevent potential oxidation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Melting Point	245 - 250 °C
Purity (HPLC)	≥ 98.0%
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.