Description

Undecanoic Anhydride is a versatile organic chemical intermediate, specifically the symmetrical anhydride of undecanoic acid. Its primary value lies in its role as an efficient acylating agent for introducing the undecyl chain, a key building block in specialty synthesis. This compound is essential for manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries seeking to develop products with specific hydrophobic or surfactant properties.

Application

• Pharmaceutical Intermediates: Used in the synthesis of active pharmaceutical ingredients (APIs) and prodrugs, particularly where lipophilicity needs to be modified.
• Agrochemical Synthesis: Serves as a key precursor for manufacturing herbicides, fungicides, and plant growth regulators that require long-chain fatty acid derivatives.
• Polymer Modification: Employed as a monomer or modifier in the production of polyesters, polyamides, and other specialty polymers to alter flexibility, hydrophobicity, or compatibility.
• Lubricant & Grease Additives: Acts as an intermediate for synthesizing high-performance esters and additives that enhance thermal stability and reduce friction.
• Surfactant & Detergent Manufacturing: A crucial building block for producing anionic and nonionic surfactants with specific foaming, wetting, or emulsifying characteristics.
• Fragrance & Flavor Chemistry: Utilized in the controlled synthesis of esters and other compounds that serve as fragrance fixatives or flavoring agents.
• Corrosion Inhibitor Formulation: Incorporated into formulations designed to protect metal surfaces in industrial and automotive applications.
• Research & Development: A valuable reagent for organic synthesis in R&D laboratories exploring new chemical entities and material science applications.

Basic Information

Item	Detail
Product Name	Undecanoic Anhydride
CAS No.	2082-77-1
Molecular Formula	C22H42O3
Molecular Weight	354.57 g/mol
Synonyms	Undecylic Anhydride; Hendecanoic Anhydride; n-Undecanoic Anhydride; Diundecanoic Anhydride; Undecanoyl Anhydride; 1-Undecanoic Anhydride; Undecylic Acid Anhydride; Dinundecanoyl Oxide
EINECS	218-213-4

Quality Control

Our Undecanoic Anhydride is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, identity, and consistency. Certificates of Analysis (COA) documenting key parameters are provided with every shipment to support your quality assurance protocols.

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 degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Acid Value	≤ 2.0 mg KOH/g
Water Content (KF)	≤ 0.5%

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