Description

Octadecyl Isocyanate is a long-chain aliphatic isocyanate monomer, also known as stearyl isocyanate. This compound is a critical building block in the synthesis of high-performance polymers and specialty chemicals, valued for its ability to impart hydrophobicity, flexibility, and chemical resistance to final products. It is essential for manufacturers in the coatings, adhesives, and advanced materials sectors seeking to enhance product durability and performance under demanding conditions.

Application

Octadecyl Isocyanate (CAS 112-96-9) is a versatile intermediate with key applications in surface modification and polymer synthesis. Its primary uses include:

• Surface Modifying Agent: Used to hydrophobically modify surfaces of textiles, paper, and fillers to impart water and oil repellency.
• Polyurethane Synthesis: Serves as a key monomer for producing specialized polyurethane elastomers, coatings, and adhesives with enhanced flexibility and chemical stability.
• Lubricant Additives: Employed in the synthesis of friction modifiers and anti-wear additives for high-performance lubricants.
• Coupling Agent: Acts as a chemical bridge to improve adhesion between organic polymers and inorganic materials like glass or minerals in composite materials.
• Pharmaceutical & Agro-chemical Intermediates: Used in the synthesis of active ingredients and prodrugs requiring long alkyl chains for specific bioavailability or activity.
• Specialty Coatings: A precursor for coatings requiring excellent weatherability, mar resistance, and low surface energy, such as release coatings and marine paints.

Basic Information

Product Name	Octadecyl Isocyanate
CAS No.	112-96-9
Molecular Formula	C19H37NO
Molecular Weight	295.51 g/mol
Synonyms	Stearyl isocyanate; 1-Isocyanatooctadecane; n-Octadecyl isocyanate; NSC 5221; Octadecane, 1-isocyanato-; Isocyanic acid, octadecyl ester; Octadecyl ester of isocyanic acid
EINECS	204-018-5

Quality Control

Our Octadecyl Isocyanate is produced under stringent quality management systems. Every batch undergoes comprehensive analytical testing, including assay by titration and impurity profile analysis by GC, to ensure high purity and consistent performance. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming compliance with agreed specifications. We support custom synthesis and can tailor purity grades to meet specific application requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at temperatures between 2°C and 8°C (refrigerated) to minimize volatility and degradation. Due to its highly volatile and easily oxidized nature, it is recommended to store under an inert atmosphere (e.g., nitrogen or argon) and keep away from heat, sparks, and open flames. Keep container tightly sealed when not in use to prevent moisture absorption and reaction with atmospheric humidity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0 %
Color (APHA)	≤ 50
Water Content (KF)	≤ 0.1 %
Free Amine (as Octadecylamine)	≤ 0.5 %
Chloride (as Cl)	≤ 0.01 %

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