Description

2-Undecenal is a high-purity, unsaturated aliphatic aldehyde with a characteristic fatty, waxy, and citrus-like odor. This compound serves as a versatile and potent flavor and fragrance intermediate, prized for its ability to impart green, aldehydic nuances to complex scent and taste profiles. It is an essential raw material for perfumers and flavorists in the cosmetics, personal care, and food & beverage industries, where precise quality and consistent organoleptic properties are paramount.

Application

• Fragrance Formulation: A key building block for creating green, aldehydic, and citrus top notes in fine perfumes, colognes, and scented consumer products.
• Flavor Creation: Used to enhance or replicate natural flavors, particularly in citrus, melon, and fatty nuances for beverages, confectionery, and dairy products.
• Personal Care Products: Incorporated into soaps, detergents, shampoos, and lotions to provide a fresh, clean scent profile.
• Aroma Chemical Synthesis: Acts as a crucial intermediate in the synthesis of more complex fragrance molecules and specialty chemicals.
• Household & Industrial Products: Used in air fresheners, fabric softeners, and cleaning agents for its potent and diffusive odor characteristics.

Basic Information

Product Name	2-Undecenal
CAS No.	2463-77-6
Molecular Formula	C11H20O
Molecular Weight	168.28 g/mol
Synonyms	2-Undecen-1-al; Undec-2-enal; (E)-2-Undecenal; trans-2-Undecenal; 2-Undecenaldehyde; 2-Hendecenal; FEMA 3423; Aldehyde C-11 undecylenic
EINECS	219-562-5

Quality Control

Our 2-Undecenal is manufactured under strict quality management systems to ensure batch-to-batch consistency and purity. Quality is verified through comprehensive analytical testing including GC, IR, and organoleptic evaluation. A Certificate of Analysis (COA) detailing identity, purity, and specific impurity limits is provided with every shipment. Our production adheres to relevant industry guidelines for flavor and fragrance materials.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area at 2-8°C (36-46°F) or as specified on the label. This product is easily oxidized (store under inert atmosphere) and highly volatile. Keep away from heat, sparks, and open flame. Containers should be kept tightly sealed when not in use to prevent evaporation and quality degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 95.0%
Refractive Index (20°C)	1.440 - 1.450
Specific Gravity (20/20°C)	0.840 - 0.850
Odor	Characteristic fatty, waxy, citrus

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