Description

Octadecyl 2-Methylprop-2-Enoate is a high-purity, long-chain alkyl methacrylate ester, also known as stearyl methacrylate. This specialty monomer is valued for its ability to impart hydrophobicity, low surface energy, and excellent flexibility to polymer chains. It is essential for formulators and manufacturers in the coatings, adhesives, and advanced materials sectors seeking to enhance product performance and durability.

Application

• Coatings & Paints: A key monomer for producing high-performance acrylic resins used in automotive, industrial, and architectural coatings, offering improved water resistance and weatherability.
• Adhesives & Sealants: Used to modify acrylic pressure-sensitive adhesives (PSAs) and structural adhesives, enhancing tack, peel strength, and flexibility.
• Lubricant & Fuel Additives: Serves as a precursor or intermediate in the synthesis of viscosity index improvers and pour point depressants for lubricating oils and fuels.
• Personal Care & Cosmetics: Employed in the production of film-forming agents and polymers for nail polishes, hair sprays, and sunscreens.
• Textile & Leather Treatment: Used to create hydrophobic and oleophobic finishes for fabrics, leather, and non-woven materials.
• Printing Inks: A component in radiation-curable (UV/EB) ink formulations, contributing to cure speed and final film properties.
• Plastic Additives: Acts as a co-monomer or additive to improve the impact resistance and processing of engineering plastics.

Basic Information

Product Name	Octadecyl 2-Methylprop-2-Enoate
CAS No.	59471-20-4
Molecular Formula	C22H42O2
Molecular Weight	338.57 g/mol
Synonyms	Stearyl Methacrylate; Octadecyl Methacrylate; n-Octadecyl Methacrylate; Methacrylic Acid, Octadecyl Ester; SMA; ODA; 2-Methyl-2-propenoic Acid Octadecyl Ester; Stearyl 2-Methylpropenoate
EINECS	261-807-9

Quality Control

Every batch of Octadecyl 2-Methylprop-2-Enoate is manufactured under a strict quality management system. We perform comprehensive analytical testing, including gas chromatography (GC) and infrared spectroscopy (IR), to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing assay, identity, and impurity profiles are provided with each shipment and are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a temperature of 15-25°C (59-77°F). Keep away from heat, sparks, and open flames. For long-term storage, consider under an inert atmosphere (e.g., nitrogen) to prevent potential oxidation.

Specification

Item	Specification
Appearance	White to off-white waxy solid / flakes
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0 %
Acid Value	≤ 1.0 mg KOH/g
Color (APHA)	≤ 50
Water Content (KF)	≤ 0.1 %
Melting Point	18 - 22 °C

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