Description

Isooctadecyl Methacrylate is a high molecular weight, long-chain alkyl methacrylate monomer. This compound is valued for its ability to impart exceptional hydrophobicity, flexibility, and low-temperature properties to polymer chains. It is a critical raw material for formulators and polymer chemists seeking to enhance the performance of specialty coatings, adhesives, and lubricant additives. Its unique branched alkyl chain structure offers superior compatibility and performance in demanding industrial applications.

Application

• Specialty Polymer Synthesis: A key monomer for producing acrylic copolymers with enhanced flexibility, water repellency, and low glass transition temperatures (Tg).
• High-Performance Coatings: Used in industrial, marine, and automotive coatings to improve film-forming properties, adhesion to low-energy surfaces, and weather resistance.
• Adhesives and Sealants: Imparts internal plasticization and improves the low-temperature flexibility and tack of pressure-sensitive adhesives (PSAs) and sealants.
• Lubricant and Fuel Additives: Serves as a precursor for viscosity index improvers and pour point depressants in engine oils and industrial lubricants.
• Textile and Leather Finishes: Employed in polymers for durable water-repellent (DWR) finishes and soft-hand modifiers.
• Radiation-Curable Systems: A functional monomer in UV/EB-curable inks, coatings, and 3D printing resins for enhanced cure speed and final material properties.

Basic Information

Product Name	Isooctadecyl Methacrylate
CAS No.	83771-46-4
Molecular Formula	C22H42O2
Molecular Weight	338.57 g/mol
Synonyms	Isooctadecyl 2-methyl-2-propenoate; Methacrylic Acid Isooctadecyl Ester; 2-Propenoic acid, 2-methyl-, isooctadecyl ester; Isooctadecyl 2-methylacrylate; Stearyl Methacrylate (branched isomer); C18 Methacrylate (branched); Sipomer® IODM (trade name); Visiomer® IODM (trade name)
EINECS	Contact for details

Quality Control

Our Isooctadecyl Methacrylate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including gas chromatography (GC) for purity and assay, to ensure consistency and compliance with industry standards. Certificates of Analysis (COA) detailing specific batch results are available upon request. We support compliance with global regulatory frameworks, including REACH.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C/59-77°F). Keep away from heat, sparks, and open flame. Incompatible with strong acids and oxidizing agents. For long-term storage, consider under an inert atmosphere (e.g., nitrogen) to minimize potential polymerization.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Color (APHA)	≤ 50
Acid Value (mg KOH/g)	≤ 0.5
Water Content (KF)	≤ 0.1%
Inhibitor (MEHQ)	50 - 100 ppm

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