Description

Octadecylsuccinic Anhydride is a high-purity, long-chain alkenyl succinic anhydride (ASA) derivative. This specialty chemical is valued for its hydrophobic character and reactivity as an anhydride, making it a versatile intermediate and functional additive. It is primarily utilized in industries requiring surface modification, polymer synthesis, and corrosion inhibition. Global B2B clients rely on it for consistent quality and reliable supply chain performance.

Application

• Paper Sizing Agent: A key hydrophobic sizing agent in paper and paperboard production to impart water resistance.
• Epoxy Curing Agent & Modifier: Used as a curing agent for epoxy resins and to modify resin properties, enhancing flexibility and hydrophobicity.
• Corrosion Inhibitor Intermediate: Serves as a precursor in the synthesis of corrosion inhibitors for fuels, lubricants, and metalworking fluids.
• Surface Treatment for Pigments/Fillers: Modifies the surface of inorganic pigments and fillers (e.g., calcium carbonate, silica) to improve dispersion in organic matrices.
• Adhesive & Sealant Formulation: Imparts water resistance and modifies rheological properties in adhesives, sealants, and coatings.
• Lubricant Additive: Functions as an intermediate for manufacturing ashless dispersants and anti-wear additives in lubricating oils.
• Polymer Synthesis: Acts as a monomer or cross-linking agent in the production of polyesters, polyamides, and other specialty polymers.
• Research & Development: Employed in R&D for creating novel materials with tailored hydrophobic and reactive properties.

Basic Information

Product Name	Octadecylsuccinic Anhydride
CAS No.	47458-32-2
Molecular Formula	C22H40O3
Molecular Weight	352.56 g/mol
Synonyms	ODSA; Octadecenylsuccinic Anhydride; n-Octadecenylsuccinic Anhydride; 2-Octadecen-1-ylsuccinic Anhydride; Alkenyl (C18) Succinic Anhydride; ASA (C18); 1-Octadecene Succinic Anhydride
EINECS	256-407-0

Quality Control

Our Octadecylsuccinic Anhydride is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, acid value, and color. A Certificate of Analysis (COA) documenting key parameters is provided with every shipment to guarantee traceability and compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which can lead to hydrolysis. Store away from strong bases, oxidizing agents, and sources of heat.

Specification

Item	Specification
Appearance	Clear, viscous liquid to waxy solid
Identification (IR)	Conforms
Assay (Anhydride Content)	≥ 95.0 %
Acid Value	Contact for details
Saponification Value	Contact for details
Color (Gardner)	≤ 3
Moisture (Karl Fischer)	≤ 0.5 %

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