Description

4-Undecenal is a high-purity, unsaturated aliphatic aldehyde with a distinctive, powerful green, waxy, and citrus-like odor. This compound is a valuable flavor and fragrance intermediate, prized for its ability to impart fresh, natural nuances to complex scent and taste profiles. It is essential for manufacturers in the flavor & fragrance (F&F), cosmetic, and fine chemical industries seeking to create sophisticated, high-impact formulations.

Application

• Flavor & Fragrance Industry: A key building block for synthesizing and enhancing flavors and fragrances, particularly those requiring green, citrus, waxy, or melon-like top notes.
• Perfumery: Used as a specialty ingredient in fine perfumes, colognes, and personal care products to add fresh, natural, and complex olfactory dimensions.
• Food & Beverage Flavors: Employed in the creation of artificial flavors for candies, beverages, and dairy products where a fresh, fruity character is desired.
• Cosmetic Formulations: Incorporated into soaps, lotions, and creams as a fragrance component.
• Chemical Synthesis: Serves as a versatile chemical intermediate in organic synthesis for producing more complex molecules in pharmaceutical and agrochemical research.
• Aroma Chemicals: A fundamental material for producing other high-value aroma chemicals through various chemical transformations.

Basic Information

Product Name	4-Undecenal
CAS No.	160321-33-5
Molecular Formula	C₁₁H₂₀O
Molecular Weight	168.28 g/mol
Synonyms	4-Undecen-1-al; (E)-4-Undecenal; Undec-4-enal; 4-Undecenaldehyde; FEMA 4032; cis-4-Undecenal; trans-4-Undecenal; 4-Hendecenal
EINECS	Contact for details

Quality Control

Our 4-Undecenal is produced under strict quality management systems to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, identity, and impurity profiles. Our quality commitment aligns with standards relevant to the flavor and fragrance industry, ensuring reliable performance in your formulations.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). This material is easily oxidized; for long-term storage, consider maintaining under an inert atmosphere (e.g., nitrogen) to preserve stability and purity. Keep away from strong oxidizing agents, acids, and bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 97.0%
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.