Description

2,5-Undecadienal is a high-purity, unsaturated aliphatic aldehyde with a distinctive green, waxy, and cucumber-like odor profile. This compound is valued for its unique organoleptic properties, making it a powerful and versatile building block in the creation of complex fragrance and flavor compositions. It is primarily sought after by manufacturers in the flavor and fragrance (F&F) industry, as well as researchers in organic synthesis and aroma chemistry.

Application

• Fragrance Formulation: A key intermediate and top note ingredient for creating fresh, green, and cucumber-like accords in fine perfumery, personal care, and household products.
• Flavor Creation: Used to impart or enhance fresh, green, and melon-like nuances in savory flavors, beverage flavors, and fruit flavor systems.
• Aroma Chemical Synthesis: Serves as a crucial starting material or intermediate in the multi-step synthesis of more complex fragrance molecules and specialty chemicals.
• Research & Development: Utilized in academic and industrial R&D laboratories for studying structure-odor relationships, reaction pathways, and developing novel aroma compounds.
• Functional Fluids & Additives: Potential use as a specialty intermediate in the production of lubricants, surfactants, or polymer additives, leveraging its reactive aldehyde and diene functionalities.

Basic Information

Product Name	2,5-Undecadienal
CAS No.	91254-00-1
Molecular Formula	C₁₁H₁₈O
Molecular Weight	166.26 g/mol
Synonyms	2,5-Undecadien-1-al; (2E,5Z)-2,5-Undecadienal; FEMA 3422; Undeca-2,5-dienal; 2,5-Undecadienal (mixture of isomers); trans-2,cis-5-Undecadienal
EINECS	Contact for details

Quality Control

Every batch of our 2,5-Undecadienal is produced and tested under a strict quality management system. We provide comprehensive analytical data to ensure the product meets the high standards required for flavor, fragrance, and synthetic applications. A detailed Certificate of Analysis (COA), including data on purity, identity, and olfactory profile, is supplied with each shipment and is available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen) in a cool, dry, and well-ventilated area at 2-8°C for long-term stability. Allow the container to reach room temperature before opening to minimize moisture ingress and oxidation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 95.0%
Odor	Characteristic green, waxy, cucumber-like
Refractive Index (20°C)	1.460 - 1.470
Specific Gravity (20/20°C)	0.850 - 0.870

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