Description

Trans,trans-2,4-Undecadienal is a high-purity, unsaturated aliphatic aldehyde characterized by its distinct fatty, waxy, and citrus-like aroma. This compound serves as a critical flavor and fragrance intermediate, prized for its ability to impart deep, natural nuances to complex scent and taste profiles. It is essential for manufacturers in the flavor and fragrance, food and beverage, and fine chemical synthesis industries seeking to create authentic, high-impact organoleptic experiences.

Application

• Flavor & Fragrance Creation: A key building block for synthesizing and enhancing flavors (e.g., citrus, fatty, meaty notes) and fragrances (e.g., in perfumes, cosmetics, and household products).
• Food & Beverage Industry: Used as a flavoring agent to replicate or boost natural tastes in processed foods, snacks, and beverages.
• Aroma Chemical Synthesis: Acts as a versatile intermediate in the production of more complex aroma chemicals and specialty esters.
• Research & Development: Employed in analytical chemistry as a reference standard and in R&D for studying flavor chemistry and developing new sensory compounds.
• Fine Chemical Manufacturing: Serves as a precursor in organic synthesis for pharmaceuticals, agrochemicals, and other specialty chemicals.

Basic Information

Product Name	Trans,trans-2,4-Undecadienal
CAS No.	30361-29-6
Molecular Formula	C₁₁H₁₈O
Molecular Weight	166.26 g/mol
Synonyms	(2E,4E)-2,4-Undecadienal; (E,E)-2,4-Undecadienal; 2,4-Undecadienal, (E,E)-; trans-2,trans-4-Undecadienal; FEMA 3422; Undeca-2,4-dienal; 2,4-Undecadien-1-al
EINECS	250-143-0

Quality Control

Our Trans,trans-2,4-Undecadienal is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including GC, HPLC, and IR spectroscopy, to ensure identity, purity, and consistency. We provide Certificates of Analysis (COA) with every shipment, detailing all relevant specifications. Our quality systems support compliance with relevant industry standards for flavor and fragrance ingredients.

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). Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0% (sum of isomers, typically ≥98% trans,trans)
Refractive Index (20°C)	1.470 - 1.480
Specific Gravity (20/20°C)	0.860 - 0.880
Related Substances (GC)	Individual unspecified impurity ≤ 1.0%

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