Description

Isooctadecenylsuccinic Anhydride is a high-purity, long-chain alkenyl succinic anhydride (ASA) derivative, a key intermediate in the synthesis of advanced polymers and specialty chemicals. Its primary value lies in its ability to impart hydrophobic and oleophilic properties, making it essential for modifying surface characteristics and enhancing performance in demanding formulations. This product is critically needed by manufacturers in the lubricant additive, paper sizing, corrosion inhibitor, and polymer modification industries, where consistent quality and reliable supply are paramount.

Application

• Lubricant Additives: Used as a key intermediate for synthesizing succinimide dispersants and other ashless additives for engine oils and industrial lubricants.
• Paper Sizing Agents: Serves as a crucial raw material for producing alkyl ketene dimer (AKD) alternatives and other internal sizing agents to impart water resistance to paper and paperboard.
• Corrosion Inhibitors: Employed in the formulation of high-performance rust preventatives and metalworking fluid additives.
• Polymer Modification: Acts as a reactive intermediate for grafting onto polymer backbones (e.g., polyisobutylene) to create functionalized materials with tailored properties.
• Epoxy Curing Agents & Modifiers: Used to synthesize flexible curing agents or as a modifier to improve toughness and adhesion of epoxy resin systems.
• Surfactants & Emulsifiers: A precursor for manufacturing specialized non-ionic and anionic surfactants for industrial applications.
• Adhesives & Sealants: Imparts improved water resistance and adhesion to various adhesive formulations.
• Fuel Additives: Utilized in the synthesis of detergents and dispersants for gasoline and diesel fuels.

Basic Information

Product Name	Isooctadecenylsuccinic Anhydride
CAS No.	58239-72-8
Molecular Formula	C22H38O3
Molecular Weight	350.54 g/mol
Synonyms	Isooctadecenyl Succinic Anhydride; Iso-Octadecenylsuccinic Anhydride; C18-Alkenyl Succinic Anhydride; Octadecenylsuccinic Anhydride; Iso-ODSA; Alkenyl Succinic Anhydride (C18); 2-(Isooctadecen-1-yl)succinic anhydride; ASAc (C18)
EINECS	Contact for details

Quality Control

Our Isooctadecenylsuccinic Anhydride is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Every lot undergoes rigorous analytical testing, including assay, acid value, and saponification value determination, to meet precise customer specifications. A comprehensive Certificate of Analysis (COA) documenting all critical quality parameters is provided with each shipment.

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); containers must be kept tightly sealed to prevent hydrolysis and degradation upon contact with atmospheric moisture.

Specification

Item	Specification
Appearance	Clear, viscous liquid to pale yellow solid
Identification (IR)	Conforms
Assay (Anhydride Content)	≥ 95.0%
Acid Value	≤ 10.0 mg KOH/g
Saponification Value	300 - 330 mg KOH/g
Color (Gardner)	≤ 4
Moisture (Karl Fischer)	≤ 0.5%

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