Description

9-Undecenoic Acid is a versatile, naturally occurring medium-chain fatty acid characterized by a terminal double bond. This unique structure makes it a valuable bio-based intermediate for synthesizing a wide range of specialty chemicals, including fragrances, flavors, and polymers. It is essential for manufacturers in the pharmaceutical, cosmetic, and fine chemical industries seeking sustainable and reactive building blocks.

Application

• Fragrance and Flavor Intermediate: A key precursor for the synthesis of γ-undecalactone (peach aldehyde) and other macrocyclic musks and fruity flavor compounds.
• Polymer and Resin Production: Used as a monomer or co-monomer in the creation of specialty polyesters, polyamides, and alkyd resins, imparting flexibility and specific functional properties.
• Pharmaceutical Synthesis: Serves as a chiral building block and intermediate in the production of various active pharmaceutical ingredients (APIs) and bioactive molecules.
• Cosmetic Ingredients: Employed in the manufacture of esters and derivatives used as emollients, surfactants, or active carriers in personal care formulations.
• Lubricant and Plasticizer Additive: Derivatives act as bio-based additives to enhance the performance and environmental profile of industrial lubricants and plasticizers.
• Agrochemical Intermediates: Utilized in the synthesis of certain pesticides and plant growth regulators.
• Research and Development: A valuable reagent in organic synthesis and chemical research for introducing the undecylenoyl moiety.

Basic Information

Product Name	9-Undecenoic Acid
CAS No.	593-25-9
Molecular Formula	C₁₁H₂₀O₂
Molecular Weight	184.28 g/mol
Synonyms	10-Undecenoic Acid; Undec-10-enoic Acid; 10-Hendecenoic Acid; ω-Undecenoic Acid; 10-Undecylenic Acid; 1-Decene-1-carboxylic Acid; NSC 403697
EINECS	209-795-0

Quality Control

Our 9-Undecenoic Acid is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing, including chromatography and titration methods, to ensure it meets precise purity and identity specifications. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical constants is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). This material is easily oxidized; for long-term storage, consider an inert atmosphere (nitrogen blanket). Keep away from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Acid Value	300 - 306 mg KOH/g
Refractive Index (n20/D)	1.447 - 1.451
Specific Gravity (20/20°C)	0.910 - 0.915
Water Content (KF)	≤ 0.5%

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