Description

(Bibenzyl-4,4'-Diyl)Diisocyanate is a high-purity aromatic diisocyanate monomer, a critical building block for synthesizing specialized polyurethane and polyurea polymers. Its symmetrical biphenyl structure provides enhanced thermal stability and mechanical properties to the resulting materials. This compound is essential for researchers and manufacturers in advanced material science, particularly for developing high-performance coatings, adhesives, and elastomers.

Application

• High-Performance Polyurethane Synthesis: A key monomer for producing specialized polyurethane resins with superior thermal and chemical resistance.
• Advanced Elastomers and Coatings: Used in formulating durable, flexible coatings, sealants, and elastomeric materials for demanding industrial applications.
• Adhesive and Binder Systems: Serves as a cross-linking agent in high-strength, structural adhesive formulations.
• Polymer Modification and Research: Employed in R&D to create novel polymer architectures, including block copolymers and dendrimers, for material science studies.
• Specialty Foams and Composites: Imparts rigidity and stability to microcellular foams and fiber-reinforced composite materials.
• Chemical Intermediate: Acts as a precursor for further chemical synthesis, including the creation of amides, ureas, and other derivatives for pharmaceutical or agrochemical research.

Basic Information

Product Name	(Bibenzyl-4,4'-Diyl)Diisocyanate
CAS No.	1034-24-8
Molecular Formula	C16H12N2O2
Molecular Weight	264.28 g/mol
Synonyms	4,4'-Diisocyanatobibenzyl; 1,1'-Biphenyl-4,4'-diyl diisocyanate; 4,4'-Methylenebis(phenyl isocyanate) (Note: This is a common synonym, but structurally distinct from MDI); p,p'-Diisocyanatodiphenylmethane (related); DBI; Bibenzyl-4,4'-diyl diisocyanate; 4,4'-Bibenzyl Diisocyanate; Bis(4-isocyanatophenyl)methane (related structural name)
EINECS	213-852-5

Quality Control

Our (Bibenzyl-4,4'-Diyl)Diisocyanate is manufactured under stringent quality control protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed to confirm identity, assay, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing purity, moisture content, and other critical parameters is provided with every shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept under a dry inert atmosphere (e.g., nitrogen or argon) to prevent reaction with atmospheric moisture. Keep away from strong bases and incompatible organic solvents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Moisture (KF)	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm

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