Description

3,3'-Diamino-4,4'-Dihydroxydiphenylmethane is a high-purity aromatic diamine and diol compound, serving as a versatile and critical building block in advanced polymer synthesis. Its bifunctional structure, featuring both amine and phenolic hydroxyl groups, makes it an essential monomer for creating high-performance materials with enhanced thermal and mechanical properties. This product is primarily required by manufacturers in the polymer, epoxy resin, and specialty chemical industries seeking to develop advanced adhesives, coatings, and composite materials.

Application

• Epoxy Resin Curing Agent & Hardener: A key component for formulating high-performance, heat-resistant epoxy systems used in aerospace, electronics, and composite materials.
• Polybenzoxazine Precursor: Serves as a fundamental monomer for synthesizing polybenzoxazine resins, known for their excellent thermal stability, flame retardancy, and low dielectric constant.
• High-Temperature Polymer Synthesis: Used in the production of polyimides, polyamides, and other engineering plastics that require exceptional thermal and chemical resistance.
• Advanced Composite Materials: Incorporated into matrices for carbon fiber and glass fiber composites in automotive and industrial applications.
• Chemical Intermediate: Employed in organic synthesis for pharmaceuticals, agrochemicals, and dyes, leveraging its reactive amine and hydroxyl sites.
• Adhesive & Coating Formulations: Enhances the durability, adhesion, and thermal properties of industrial adhesives and protective coatings.

Basic Information

Product Name	3,3'-Diamino-4,4'-Dihydroxydiphenylmethane
CAS No.	16523-28-7
Molecular Formula	C13H14N2O2
Molecular Weight	230.26 g/mol
Synonyms	4,4'-Dihydroxy-3,3'-diaminodiphenylmethane; DDM-2OH; 3,3'-Diamino-4,4'-dihydroxydiphenylmethane; Bis(3-amino-4-hydroxyphenyl)methane; 4,4'-Methylenebis(2-aminophenol); 2,2'-Dihydroxy-5,5'-methylenedianiline; BAHP; Phenolic Diamine Monomer
EINECS	Contact for details

Quality Control

Our 3,3'-Diamino-4,4'-Dihydroxydiphenylmethane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for advanced polymer applications. Certificates of Analysis (COA) documenting purity, moisture content, and other critical parameters are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is easily oxidized; for long-term storage, consider an inert atmosphere (e.g., nitrogen or argon blanket) to maintain optimal purity and prevent degradation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Light brown to brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	155 - 165 °C
Loss on Drying	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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