Description

4-Octadecenal is a high-purity, long-chain unsaturated aldehyde with the CAS number 56554-98-4. This compound serves as a valuable intermediate and building block in advanced organic synthesis, particularly for creating complex molecules with specific functional properties. It is essential for R&D and production in the fragrance, flavor, and specialty chemical industries, where its unique structure enables the creation of novel compounds.

Application

• Fragrance & Flavor Intermediate: A key precursor for synthesizing specific aldehydic and musky notes in high-value perfumery and flavor formulations.
• Organic Synthesis Building Block: Used in the production of pharmaceuticals, agrochemicals, and liquid crystals due to its reactive aldehyde group and long hydrocarbon chain.
• Research & Development: Employed in academic and industrial laboratories for studying lipid oxidation, pheromone synthesis, and material science applications.
• Specialty Surfactants & Lubricants: Acts as a feedstock for manufacturing specialized surfactants and lubricant additives with tailored performance characteristics.

Basic Information

Product Name	4-Octadecenal
CAS No.	56554-98-4
Molecular Formula	C₁₈H₃₄O
Molecular Weight	266.46 g/mol
Synonyms	trans-4-Octadecenal; (E)-4-Octadecenal; 4-Octadecen-1-al; Octadec-4-enal; 4-Octadecenaldehyde; (E)-Octadec-4-enal; 4-Octadecenal (mixed isomers)
EINECS	Contact for details

Quality Control

Our 4-Octadecenal is produced under strict quality management protocols. Every batch undergoes rigorous analytical testing, including GC, HPLC, and NMR, to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing all specifications is provided with each shipment to guarantee compliance with your project requirements.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at 2-8°C to minimize oxidation and degradation. Keep the container in a cool, dry, and well-ventilated area, away from heat sources and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Isomeric Purity (GC)	Contact for details

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