Description

1,4-Diisocyanobenzene is a high-purity aromatic diisocyanate monomer, a critical building block in advanced polymer synthesis. Its rigid para-phenylene structure provides exceptional thermal stability and mechanical strength to the resulting materials. This compound is essential for manufacturers in the polyurethane, specialty adhesive, and high-performance coating industries seeking to enhance product durability.

Application

• Polymer Synthesis: A key monomer for producing high-performance polyurethanes (PUR) and polyurea elastomers with superior thermal and chemical resistance.
• Specialty Adhesives & Sealants: Used in formulating industrial-grade adhesives and sealants that require excellent bonding strength and environmental stability.
• Advanced Coatings: Serves as a cross-linking agent in coatings for automotive, aerospace, and industrial equipment, providing scratch and corrosion resistance.
• Chemical Intermediate: Acts as a versatile precursor in organic synthesis for pharmaceuticals, agrochemicals, and liquid crystal materials.
• Composite Materials: Incorporated into fiber-reinforced plastics and composite matrices to improve interfacial adhesion and overall material performance.
• Research & Development: Utilized in academic and industrial R&D for developing novel polymers with tailored properties.

Basic Information

Product Name	1,4-Diisocyanobenzene
CAS No.	935-16-0
Molecular Formula	C8H4N2O2
Molecular Weight	160.13 g/mol
Synonyms	p-Phenylene Diisocyanate; 1,4-Phenylene Diisocyanate; PDI; 4-Isocyanatophenyl Isocyanate; Benzene-1,4-diyl Diisocyanate; p-Phenylene Diisocyanide; NSC 406079; UN 2206 (when regulated)
EINECS	213-308-5

Quality Control

Our 1,4-Diisocyanobenzene is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including assay, purity profiling, and impurity quantification, to ensure it meets precise customer specifications and industry benchmarks. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent degradation from moisture ingress. Isolate from strong bases, acids, alcohols, amines, and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	94 - 97 °C
Heavy Metals (as Pb)	≤ 10 ppm
Moisture (KF)	≤ 0.5%
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 2.0%

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