Description

4-Undecene is a high-purity, linear α-olefin with the CAS number 20810-21-3, serving as a versatile intermediate in advanced organic synthesis. Its terminal double bond makes it a valuable building block for creating specialty chemicals, surfactants, and performance polymers. This product is essential for R&D laboratories and industrial manufacturers in the fine chemical, lubricant additive, and polymer modification sectors seeking consistent quality and reliable supply.

Application

• Organic Synthesis Intermediate: A key starting material for the production of higher alcohols, acids, and amines via hydroformylation, oxidation, or amination reactions.
• Surfactant & Detergent Precursor: Used in the manufacture of biodegradable, non-ionic surfactants for industrial and household cleaning formulations.
• Lubricant & Fuel Additive Component: Employed in synthesizing polyalphaolefins (PAOs) and other performance additives that enhance viscosity index and thermal stability.
• Polymer Comonomer: Acts as a comonomer in the production of linear low-density polyethylene (LLDPE) and other copolymers to tailor physical properties.
• Fine Chemical & Pharmaceutical Building Block: Utilized in the synthesis of complex molecules for agrochemicals, fragrances, and active pharmaceutical ingredients (APIs).
• Research & Development: Serves as a standard or reagent in catalytic studies, material science research, and method development.

Basic Information

Product Name	4-Undecene
CAS No.	20810-21-3
Molecular Formula	C₁₁H₂₂
Molecular Weight	154.29 g/mol
Synonyms	1-Undecene (isomer); Undec-4-ene; 4-Undecylene; 4-Hendecene; 1-Hendecene (mixed isomers); α-Undecene (technical grade); Linear C11 α-olefin
EINECS	244-099-1

Quality Control

Our 4-Undecene is produced under stringent quality management systems to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including Gas Chromatography (GC) and meets rigorous internal specifications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat, sparks, and open flames. Keep container tightly sealed when not in use to prevent evaporation and minimize contact with air. Incompatible with strong acids and oxidizing agents; store separately.

Specification

Item	Specification
Appearance	Clear, colorless liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0% (4-Undecene)
Specific Gravity (20°C)	0.750 - 0.760
Refractive Index (n20D)	1.425 - 1.430
Water Content (KF)	≤ 0.1%

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