Description

Undecane-1,11-Diyl Diisocyanate is a linear aliphatic diisocyanate monomer characterized by its long, flexible hydrocarbon chain. This structure is critical for synthesizing polyurethanes and polyureas with enhanced hydrolytic stability, low-temperature flexibility, and resistance to yellowing compared to aromatic counterparts. It is an essential building block for advanced material scientists and formulators in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for high-performance specialty polymers.

Application

• High-Performance Polyurethane Coatings: Used in automotive clear coats, industrial maintenance paints, and marine coatings requiring excellent weatherability, gloss retention, and chemical resistance.
• Specialty Elastomers and Sealants: A key component in the production of flexible, durable elastomers for gaskets, rollers, and high-grade sealants that perform in demanding environments.
• Adhesives and Binders: Serves as a crosslinker in structural and laminating adhesives, providing strong, moisture-resistant bonds for composites, textiles, and plastics.
• Waterborne Polyurethane Dispersions (PUDs): Enables the formulation of environmentally friendly, low-VOC coatings and finishes with superior mechanical properties.
• Medical-Grade Polymers: Utilized in the synthesis of biocompatible polyurethanes for certain medical devices and implants due to its purity and stability.
• Advanced Composite Materials: Acts as a matrix resin or modifier in fiber-reinforced composites for aerospace, automotive, and sporting goods.

Basic Information

Product Name	Undecane-1,11-Diyl Diisocyanate
CAS No.	78980-33-3
Molecular Formula	C13H22N2O2
Molecular Weight	238.33 g/mol
Synonyms	1,11-Diisocyanatoundecane; Undecane Diisocyanate; 1,11-Undecane Diisocyanate; UDI; Undecamethylene Diisocyanate; 1,11-Undecamethylene Diisocyanate; 11-Isocyanato-1-isocyanatoundecane; α,ω-Undecane Diisocyanate
EINECS	Contact for details

Quality Control

Our Undecane-1,11-Diyl Diisocyanate is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing, including assay by titration, isocyanate content determination, and impurity profiling by gas chromatography (GC) to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing all specifications are provided with each shipment to guarantee compliance with your formulation requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 2°C and 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 and carbon dioxide, which can lead to polymerization or urea formation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (NCO Content)	≥ 98.0 %
Purity (GC)	≥ 99.0 %
Hydrolyzable Chloride	≤ 50 ppm
Total Chloride	≤ 100 ppm
Water Content (KF)	≤ 0.05 %
Viscosity @ 25°C	Contact for details

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