Description

4,4'-Diamino-2,2'-Dimethylbibenzyl is a high-purity aromatic diamine monomer characterized by its symmetrical, methyl-substituted biphenyl structure. This compound matters as a critical building block in the synthesis of advanced polymers and specialty chemicals, offering enhanced thermal stability and tailored reactivity. It is primarily needed by manufacturers in the polymer, pharmaceutical, and agrochemical industries for applications ranging from high-performance polyimides to complex organic intermediates.

Application

• Polymer Synthesis: A key monomer for producing high-temperature resistant polyimides, polyamides, and epoxy curing agents.
• Pharmaceutical Intermediates: Used in the synthesis of active pharmaceutical ingredients (APIs) and other complex organic molecules.
• Agrochemicals: Serves as a precursor in the manufacture of certain herbicides, fungicides, and plant growth regulators.
• Liquid Crystal Polymers (LCPs): A valuable component in the production of LCPs for electronics and display technologies.
• Dye and Pigment Manufacturing: Acts as an intermediate in the synthesis of specific azo dyes and organic pigments.
• Cross-linking Agent: Utilized to create cross-linked polymer networks for coatings, adhesives, and composites.
• Research & Development: Employed in academic and industrial R&D for novel material discovery and process development.

Basic Information

Product Name	4,4'-Diamino-2,2'-Dimethylbibenzyl
CAS No.	22856-62-8
Molecular Formula	C₁₆H₂₀N₂
Molecular Weight	240.34 g/mol
Synonyms	2,2'-Dimethylbenzidine; 2,2'-Dimethyl-4,4'-diaminobiphenyl; 4,4'-Diamino-2,2'-dimethylbiphenyl; 2,2'-Dimethyl-[1,1'-biphenyl]-4,4'-diamine; o-Tolidine (unsubstituted analog); Bianisidine (related compound); DADMB; Contact for additional trade names.
EINECS	Contact for details

Quality Control

Our 4,4'-Diamino-2,2'-Dimethylbibenzyl is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry standards. Certificates of Analysis (COA) documenting all critical parameters are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its sensitivity to light and propensity for oxidation, it is recommended to store the material under an inert atmosphere (e.g., nitrogen or argon) for long-term stability. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white 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
Related Substances (HPLC)	Contact for details

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