Description

3,3',4,4',5,5'-Hexahydroxy-2,2'-Methylenedi(Benzoic Acid) is a polyphenolic compound with a complex, multi-functional molecular structure. This compound matters as a versatile chemical building block and intermediate, prized for its multiple reactive hydroxyl and carboxylic acid groups which enable diverse synthesis pathways. It is needed by research and development laboratories, pharmaceutical manufacturers, and specialty chemical producers for applications in organic synthesis, material science, and as a potential precursor for advanced polymers and ligands. The product is supplied with a CAS number of 552-21-6.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of complex drug molecules, particularly those requiring polyphenolic frameworks.
• Chelating Agent Synthesis: Used to develop novel chelating ligands for metal ion sequestration in industrial and analytical chemistry.
• Polymer Chemistry: Acts as a monomer or cross-linking agent for creating specialty resins and high-performance polymers with enhanced thermal or chemical resistance.
• Antioxidant Research: Employed in R&D for studying structure-activity relationships in natural and synthetic antioxidants due to its multiple hydroxyl groups.
• Material Science: Investigated for use in advanced materials, including coatings and composites, where its functional groups can improve adhesion or modify surface properties.
• Analytical Reagent: May be used as a standard or reagent in chromatographic analysis and other laboratory testing procedures.

Basic Information

Product Name	3,3',4,4',5,5'-Hexahydroxy-2,2'-Methylenedi(Benzoic Acid)
CAS No.	552-21-6
Molecular Formula	C15H12O10
Molecular Weight	352.25 g/mol
Synonyms	2,2'-Methylenebis(3,4,5-trihydroxybenzoic Acid); Hexahydroxydiphenic Acid; 3,3',4,4',5,5'-Hexahydroxydiphenic Acid 2,2'-Methylene Ester; Ellagic Acid Precursor; HHDP; Methylene Bis(3,4,5-trihydroxybenzoic Acid); 2,2'-Methylenedi(3,4,5-trihydroxybenzoic Acid)
EINECS	209-000-8

Quality Control

Our 3,3',4,4',5,5'-Hexahydroxy-2,2'-Methylenedi(Benzoic Acid) is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with key parameters including assay, impurity profile, and residual solvents. Our quality commitment supports applications requiring high-purity intermediates for research and regulated industries.

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). Due to its sensitivity to oxidation, prolonged storage under an inert atmosphere (e.g., nitrogen or argon) is recommended for optimal long-term stability. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Off-white to light yellow powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 5.0%

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