Description

11-Octadecenal is a high-purity, long-chain aliphatic aldehyde with the CAS number 56554-95-1. This compound serves as a valuable intermediate and building block in the synthesis of complex organic molecules, particularly in the fragrance, flavor, and specialty chemical industries. Its specific structure makes it a sought-after material for research and development in fine chemical synthesis, where precise molecular architecture is required.

Application

• Fragrance and Flavor Intermediate: A key building block for synthesizing specific musky, waxy, or fatty odor notes in high-value perfumery and flavor compounds.
• Organic Synthesis: Used as a versatile intermediate in the production of pharmaceuticals, agrochemicals, and liquid crystal materials.
• Surfactant and Lubricant Precursor: Acts as a starting material for manufacturing specialized surfactants, emulsifiers, and synthetic lubricants with unique properties.
• Research & Development: Employed in academic and industrial R&D for studying olefin metathesis, oxidation reactions, and other catalytic processes.
• Polymer Modification: Utilized to introduce long-chain aldehyde functionalities into polymers for cross-linking or to impart specific surface characteristics.

Basic Information

Product Name	11-Octadecenal
CAS No.	56554-95-1
Molecular Formula	C₁₈H₃₄O
Molecular Weight	266.46 g/mol
Synonyms	11-Octadecen-1-al; (Z)-11-Octadecenal; cis-11-Octadecenal; 11-Heptadecen-1-ylcarboxaldehyde; Octadec-11-enal; 11-Octadecenaldehyde; Unsaturated C18 Aldehyde
EINECS	Contact for details

Quality Control

Our 11-Octadecenal is produced under stringent quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including Gas Chromatography (GC) and Nuclear Magnetic Resonance (NMR) spectroscopy, to verify identity and assay. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting key parameters such as purity, identity, and specific impurity profiles.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, and well-ventilated area at 2-8°C for long-term stability. This product is easily oxidized and light-sensitive. Allow the container to reach ambient temperature before opening to prevent moisture condensation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Isomeric Purity (cis-isomer, GC)	≥ 90.0%
Peroxide Value	< 10.0 meq/kg

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