Description

Isooctadecenylsuccinic Anhydride is a high-purity, long-chain alkenyl succinic anhydride (ASA) derivative, a critical intermediate in the synthesis of advanced polymers and surface-active agents. Its unique structure provides excellent hydrophobic character and reactivity, making it indispensable for modifying material properties. This product is essential for manufacturers in the coatings, adhesives, and specialty chemical industries seeking to enhance product performance through tailored molecular architecture.

Application

• As a key monomer for the synthesis of polyimide resins and other high-performance polymers.
• As a reactive intermediate in the production of corrosion inhibitors and metal surface treatment agents.
• In the formulation of epoxy curing agents and hardeners to impart flexibility and moisture resistance.
• As a building block for surfactants and emulsifiers with specific hydrophobic-lipophilic balance (HLB).
• For the modification of alkyd resins to improve drying properties and film durability in coatings.
• In the synthesis of paper sizing agents to enhance water repellency.
• As a compatibilizer and coupling agent in polymer blends and composites.
• In research and development for creating novel specialty chemicals with tailored functionalities.

Basic Information

Item	Details
Product Name	Isooctadecenylsuccinic Anhydride
CAS No.	28777-98-2
Molecular Formula	C22H38O3
Molecular Weight	350.54 g/mol
Synonyms	Isooctadecenyl Succinic Anhydride; Iso-ODSA; C18-Alkenyl Succinic Anhydride; 2-(Isooctadecen-1-yl)succinic Anhydride; Octadecenylsuccinic Anhydride (mixed isomers); AS-18; Alkenyl (C18) Succinic Anhydride; ASA derivative
EINECS	Contact for details

Quality Control

Our Isooctadecenylsuccinic Anhydride is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure consistent purity, reactivity, and performance. We provide full traceability and Certificates of Analysis (COA) are available upon request, detailing key parameters such as assay, acid value, and color.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent degradation by atmospheric moisture.

Specification

Item	Specification
Appearance	Clear, viscous liquid to pale yellow solid
Identification (IR)	Conforms to structure
Assay (Anhydride Content)	≥ 97.0 %
Acid Value	≤ 5.0 mg KOH/g
Saponification Value	300 - 320 mg KOH/g
Color (Gardner)	≤ 3
Moisture (Karl Fischer)	≤ 0.2 %

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