Description

5-Octadecene,(E)- CAS NO 7206-21-5 is a high-purity, long-chain terminal alkene with a defined (E)-stereochemistry, offering a valuable building block for organic synthesis and material science. Its linear C18 structure with a terminal double bond makes it a versatile intermediate for creating surfactants, lubricant additives, and specialty polymers. This product is essential for R&D chemists and manufacturers in the fine chemical, agrochemical, and advanced materials sectors seeking a reliable and well-characterized olefinic feedstock.

Application

• Organic Synthesis Intermediate: Used in hydroformylation, metathesis, and polymerization reactions to create longer-chain or functionalized compounds.
• Surfactant & Detergent Precursor: Serves as a hydrophobic feedstock for the production of olefin sulfonates and other anionic surfactants.
• Lubricant & Fuel Additive Synthesis: A key component in manufacturing synthetic esters and polyalphaolefins (PAOs) for high-performance lubricants.
• Polymer & Material Science: Acts as a comonomer or chain-transfer agent in the production of polyethylene, polyolefin elastomers, and waxes.
• Agrochemical Formulations: Employed in the synthesis of pesticide emulsifiers and adjuvants.
• Flavor & Fragrance Industry: Used as an intermediate for synthesizing specific musk or fatty aroma chemicals.
• Research & Development: A standard compound for analytical chemistry, chromatography, and studying reaction mechanisms.

Basic Information

Product Name	5-Octadecene,(E)-
CAS No.	7206-21-5
Molecular Formula	C₁₈H₃₆
Molecular Weight	252.48 g/mol
Synonyms	(E)-5-Octadecene; trans-5-Octadecene; 5-trans-Octadecene; (E)-Octadec-5-ene; 5-Octadecene; Octadec-5-ene; (5E)-Octadec-5-ene; 5-Octadecene (trans-)
EINECS	Contact for details

Quality Control

Our 5-Octadecene,(E)- is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including GC, GC-MS, and NMR, to ensure high chemical purity and isomeric integrity. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your specifications.

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 room temperature (15-25°C). Due to its easily oxidized nature, minimize headspace and exposure to air after opening.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0% (Area %)
(E)-Isomer Content (GC)	≥ 98.0% of total octadecene
Water Content (KF)	≤ 0.1%

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