Description

1,4-Naphthalenediyldiisocyanate is a specialized aromatic diisocyanate monomer, a key building block in polymer chemistry. Its rigid naphthalene backbone imparts enhanced thermal stability and mechanical properties to the resulting polymers, making it a critical material for high-performance applications. This compound is primarily sought by manufacturers in the polyurethane, coatings, and advanced materials sectors for producing specialized elastomers, adhesives, and high-temperature resistant coatings.

Application

• High-Performance Polyurethane Elastomers: Used as a core monomer to synthesize polyurethanes with superior heat resistance, mechanical strength, and chemical stability for demanding industrial applications.
• Specialty Coatings and Paints: Serves as a cross-linking agent in coatings for automotive, aerospace, and industrial equipment, providing excellent durability, gloss retention, and resistance to weathering and chemicals.
• Advanced Adhesives and Sealants: A key component in formulating high-strength, flexible adhesives and sealants used in construction, automotive assembly, and electronics.
• Thermally Stable Polymers: Incorporated into polymer backbones (e.g., polyimides, polyureas) to enhance thermal degradation temperatures and flame retardancy for electronics and insulation materials.
• Chemical Intermediate: Utilized in organic synthesis for the production of other valuable chemicals, including agricultural products and pharmaceutical intermediates, via reactions with amines and alcohols.
• Composite Materials: Acts as a coupling agent or resin component in fiber-reinforced plastics and composites, improving interfacial adhesion and overall material performance.

Basic Information

Product Name	1,4-Naphthalenediyldiisocyanate
CAS No.	46494-42-2
Molecular Formula	C₁₂H₆N₂O₂
Molecular Weight	210.19 g/mol
Synonyms	1,4-Diisocyanatonaphthalene; Naphthalene-1,4-diisocyanate; 1,4-Naphthalene Diisocyanate; NDI (common abbreviation); 1,4-Naphthylene Diisocyanate; 4-Isocyanato-1-isocyanatonaphthalene; 1,4-Bis(isocyanato)naphthalene
EINECS	Contact for details

Quality Control

Our 1,4-Naphthalenediyldiisocyanate is manufactured under stringent quality management systems. Each batch undergoes rigorous analytical testing, including assay by titration, impurity profile analysis via HPLC, and confirmation of identity by FT-IR and NMR spectroscopy, to ensure it meets precise specifications for isocyanate content and purity. Certificates of Analysis (COA) documenting all critical quality attributes are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at temperatures between 15-25°C. Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen or argon) to prevent reaction with atmospheric moisture. Keep away from heat, sparks, open flames, and incompatible materials such as alcohols, amines, and strong bases.

Specification

Item	Specification
Appearance	White to pale yellow crystalline powder
Identification (IR)	Conforms
Assay (NCO Content)	≥ 98.0 %
Purity (HPLC)	≥ 97.0 %
Melting Point	126 - 130 °C
Hydrolyzable Chloride	≤ 0.1 %
Heavy Metals (as Pb)	≤ 10 ppm

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