Description

2,2'-Diamino-4,4'-Dimethyl-1,1'-Biphenyl CAS NO 59517-21-4 is a high-purity, aromatic diamine monomer characterized by its rigid biphenyl core and strategically positioned methyl and amino functional groups. This compound is a critical building block in advanced polymer synthesis, offering enhanced thermal stability and mechanical properties to the final materials. It is primarily required by manufacturers in the high-performance polymer, specialty chemical, and pharmaceutical intermediate sectors.

Application

• Polyimide and Polyamide Synthesis: Serves as a key diamine monomer for producing high-temperature resistant films, coatings, and engineering plastics.
• Epoxy Curing Agent: Used as a curing agent or hardener in advanced epoxy resin systems for composites and adhesives.
• Pharmaceutical Intermediate: Acts as a precursor in the synthesis of complex active pharmaceutical ingredients (APIs) and agrochemicals.
• Liquid Crystal Polymers (LCPs): A vital component in the manufacture of LCPs used in electronics and high-performance fibers.
• Dye and Pigment Manufacturing: Employed in the synthesis of organic dyes and pigments, particularly azo dyes.
• Corrosion Inhibitor Formulations: Used in specialty chemical formulations designed to protect metals.
• Research & Development: Utilized in academic and industrial R&D for novel material discovery and process development.

Basic Information

Product Name	2,2'-Diamino-4,4'-Dimethyl-1,1'-Biphenyl
CAS No.	59517-21-4
Molecular Formula	C14H16N2
Molecular Weight	212.29 g/mol
Synonyms	4,4'-Dimethyl-2,2'-diaminobiphenyl; 2,2'-Biphenyldiamine, 4,4'-dimethyl-; 4,4'-Dimethyl-[1,1'-biphenyl]-2,2'-diamine; 2,2'-Diamino-4,4'-dimethylbiphenyl; 4,4'-Dimethylbiphenyl-2,2'-diamine; DADMB; Biphenyl-2,2'-diamine, 4,4'-dimethyl-
EINECS	Contact for details

Quality Control

Our 2,2'-Diamino-4,4'-Dimethyl-1,1'-Biphenyl is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for advanced synthesis. Certificates of Analysis (COA) detailing all specifications are provided with each shipment and are available upon request.

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). Keep away from strong oxidizing agents and acids.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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