Description

4,4'-Methylenediresorcinol is a high-purity organic chemical compound, also known by its CAS number 7583-20-2. This compound serves as a versatile and critical building block in advanced polymer synthesis and specialty chemical manufacturing. It is primarily sought after by R&D laboratories and industrial producers in the polymer, resin, and fine chemical sectors for its unique structural properties.

Application

• Polymer & Resin Intermediate: A key monomer in the synthesis of high-performance phenolic resins, epoxy curing agents, and specialty polybenzoxazines.
• Flame Retardant Formulations: Used as a reactive component in the production of flame-retardant polymers and coatings.
• Adhesive & Composite Materials: Imparts thermal stability and mechanical strength to advanced adhesives and fiber-reinforced composites.
• Chemical Synthesis: Serves as a pivotal precursor in organic synthesis for pharmaceuticals, agrochemicals, and dyes.
• Cross-linking Agent: Employed to enhance the cross-link density and performance properties of elastomers and thermosetting plastics.
• Research & Development: Utilized in academic and industrial R&D for developing novel materials with tailored properties.

Basic Information

Product Name	4,4'-Methylenediresorcinol
CAS No.	7583-20-2
Molecular Formula	C13H12O4
Molecular Weight	232.23 g/mol
Synonyms	4,4'-Methylenebis(1,3-benzenediol); 4,4'-Methylenediphenol; 1,1'-Methylenebis(3,5-dihydroxybenzene); Bis(3,5-dihydroxyphenyl)methane; MDR; 4,4'-Dihydroxydiphenylmethane; 4,4'-Methylenebis(resorcinol); 4,4'-(Methylenedi-1,3-phenylene)diol
EINECS	231-489-1

Quality Control

Our 4,4'-Methylenediresorcinol is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting standards for industrial and research applications. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its sensitivity to oxidation, it is recommended to store under an inert atmosphere for long-term preservation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	185 - 195 °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.