Description

4-Undecenoic Acid is a versatile medium-chain unsaturated fatty acid with a terminal double bond, offering unique reactivity for chemical synthesis. This compound serves as a valuable chemical intermediate and building block in the production of specialty polymers, fragrances, and pharmaceutical actives. It is particularly relevant for manufacturers in the flavor & fragrance, pharmaceutical, and advanced materials sectors seeking to introduce specific functional groups into their molecules.

Application

• Fragrance and Flavor Intermediate: Used in the synthesis of musk analogs, lactones, and other aroma chemicals due to its fatty, waxy odor profile and reactive site for cyclization.
• Pharmaceutical Synthesis: Acts as a key building block for creating bioactive molecules and prodrugs, leveraging the carboxylic acid and alkene functionalities for further derivatization.
• Polymer Chemistry: Serves as a monomer or co-monomer in the production of specialty polyesters, polyamides, and other polymers where the unsaturation allows for cross-linking or post-polymerization modification.
• Lubricant and Surfactant Additive: Employed in the formulation of synthetic lubricants and surfactants, where its structure can enhance performance characteristics like viscosity and surface activity.
• Organic Synthesis Reagent: Utilized in research and development for various organic transformations, including metathesis, hydroformylation, and as a precursor for ω-unsaturated derivatives.
• Corrosion Inhibitor Precursor: Can be derivatized into compounds that form protective films on metal surfaces, finding use in industrial maintenance formulations.

Basic Information

Product Name	4-Undecenoic Acid
CAS No.	65423-21-4
Molecular Formula	C₁₁H₂₀O₂
Molecular Weight	184.28 g/mol
Synonyms	4-Undecenoic acid; Undec-4-enoic acid; 4-Hendecenoic acid; 4-Undecylenic acid; (E)-4-Undecenoic acid (mixture of isomers common); 4-Undecensäure (German); Acide 4-undécénoïque (French); ω-Heptenylbutyric acid
EINECS	Contact for details

Quality Control

Our 4-Undecenoic Acid is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing, including chromatographic purity analysis and identity confirmation, to ensure it meets precise specifications. Certificates of Analysis (COA) detailing purity, assay, and impurity profiles are available upon request for full traceability and quality assurance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area under an inert atmosphere (e.g., nitrogen or argon) to minimize oxidation. Recommended storage temperature is 2-8°C for long-term stability. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC or HPLC)	≥ 95.0%
Acid Value	Contact for details
Water Content (KF)	≤ 0.5%
Refractive Index (n20D)	Contact for details
Specific Gravity (20°C)	Contact for details

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