Description

4,4'-Diamino-Triphenylmethane is a high-purity aromatic diamine compound, serving as a critical building block in advanced polymer synthesis. Its molecular structure, featuring two primary amine groups, makes it an essential monomer for producing high-performance polyimides, epoxy resins, and other specialty polymers. This chemical is particularly vital for manufacturers in the electronics, aerospace, and advanced coatings industries seeking materials with superior thermal stability and mechanical properties.

Application

• Polyimide Precursor: A key monomer for synthesizing high-temperature, high-strength polyimide resins used in flexible printed circuits (FPC), semiconductor coatings, and aerospace components.
• Epoxy Curing Agent & Hardener: Functions as a cross-linking agent for epoxy resin systems, enhancing thermal resistance and mechanical strength in advanced composite materials and adhesives.
• Dye & Pigment Intermediate: Used in the synthesis of triarylmethane dyes and other complex organic colorants for industrial applications.
• Pharmaceutical Intermediate: Serves as a building block in the synthesis of certain active pharmaceutical ingredients (APIs) and fine chemicals.
• Research & Development: Employed in academic and industrial R&D for developing novel polymers, liquid crystals, and organic electronic materials.

Basic Information

Product Name	4,4'-Diamino-Triphenylmethane
CAS No.	603-40-7
Molecular Formula	C19H18N2
Molecular Weight	274.36 g/mol
Synonyms	Bis(4-aminophenyl)phenylmethane; 4,4'-Methylenedianiline (Note: This is a common synonym, but technically refers to the diphenyl isomer); 4,4'-Diaminotriphenylmethane; 4,4',4''-Triaminotriphenylmethane precursor; DATP; p,p'-Diaminotriphenylmethane; Benzenamine, 4,4'-(phenylmethylene)bis-; NSC 403697
EINECS	210-048-4

Quality Control

Our 4,4'-Diamino-Triphenylmethane is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via FT-IR, to ensure it meets exacting specifications for high-performance applications. Certificates of Analysis (COA) documenting all critical parameters are provided with every shipment and are available upon request.

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, acids, and moisture. For long-term storage, consider an inert atmosphere to prevent oxidation.

Specification

Item	Specification
Appearance	Light yellow to beige crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	135 - 140 °C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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