Description

4-Undecenal, (4E)- is a high-purity, unsaturated aliphatic aldehyde with a distinctive, powerful green, waxy, and citrus-like odor. This compound is valued for its role as a key fragrance and flavor intermediate, providing unique organoleptic properties to complex formulations. It is primarily sought after by manufacturers in the flavor and fragrance (F&F), cosmetic, and fine chemical synthesis industries for creating sophisticated scent and taste profiles.

Application

• Fragrance Ingredient: Used as a key component in perfumes, colognes, and personal care products to impart fresh, green, and citrusy top notes.
• Flavor Enhancer: Employed in the creation of complex flavor profiles for food and beverage applications, adding waxy, fruity nuances.
• Cosmetic Formulations: Incorporated into soaps, lotions, and detergents as a fragrance component.
• Fine Chemical Synthesis: Serves as a versatile chiral building block or intermediate in organic synthesis for pharmaceuticals and agrochemicals.
• Aromatherapy & Home Scents: Used in diffuser oils, candles, and air fresheners for its potent and characteristic aroma.
• Research & Development: Utilized in analytical laboratories and R&D for studying olfactory receptors and developing new aroma chemicals.

Basic Information

Product Name	4-Undecenal, (4E)-
CAS No.	68820-35-9
Molecular Formula	C₁₁H₂₀O
Molecular Weight	168.28 g/mol
Synonyms	(4E)-4-Undecenal; trans-4-Undecenal; (E)-4-Undecen-1-al; 4-Undecen-1-al, (4E)-; 4-Undecenal; Undec-4-enal; FEMA 4032; Flavis No. 05.079
EINECS	Contact for details

Quality Control

Our 4-Undecenal, (4E)- is produced and tested under a stringent quality management system to ensure batch-to-batch consistency and high purity. We adhere to relevant industry standards for fragrance and flavor ingredients. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles via GC, IR, and other analytical methods is provided with every shipment to guarantee supply reliability and technical compliance for your formulations.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). This material is easily oxidized and should be handled under an inert atmosphere when appropriate for long-term storage. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 97.0% (sum of isomers, typically ≥98%)
Odor	Characteristic green, waxy, citrus
Refractive Index (20°C)	1.440 - 1.450
Specific Gravity (20/20°C)	0.840 - 0.850

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