Description

4-Octenal is an important eight-carbon unsaturated aldehyde with the CAS registry number 42976-87-4. This compound serves as a versatile intermediate and a key flavor and fragrance ingredient, valued for its unique green, fatty, and citrus-like organoleptic properties. It is essential for manufacturers in the flavor & fragrance, food, and fine chemical synthesis industries seeking to create complex sensory profiles or specific molecular structures.

Application

• Flavor & Fragrance Formulation: Used as a key component to impart fresh, green, waxy, and citrus notes in perfumes, cosmetics, and personal care products.
• Food Flavoring Agent: Enhances or creates natural-tasting flavors in beverages, dairy products, confectionery, and savory applications.
• Chemical Synthesis Intermediate: Serves as a crucial building block in organic synthesis for pharmaceuticals, agrochemicals, and other specialty chemicals, leveraging its reactive aldehyde and alkene functional groups.
• Aroma Chemical Production: Acts as a precursor in the manufacturing of more complex aroma chemicals through reactions such as hydrogenation, oxidation, or condensation.
• Research & Development: Utilized in academic and industrial R&D for studying reaction mechanisms, catalysis, and developing new synthetic methodologies.

Basic Information

Product Name	4-Octenal
CAS No.	42976-87-4
Molecular Formula	C8H14O
Molecular Weight	126.20 g/mol
Synonyms	trans-4-Octenal; (E)-4-Octenal; 4-Octen-1-al; Oct-4-enal; FEMA 4797; 4-trans-Octenal; Leaf aldehyde (component); (E)-Oct-4-enal
EINECS	Contact for details

Quality Control

Our 4-Octenal is produced and handled under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including purity assay and impurity profiling, to ensure it meets the high standards required for flavor, fragrance, and synthetic applications. A Certificate of Analysis (COA) detailing specific results for identity, purity, and other critical parameters is provided with every shipment.

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 product is easily oxidized and should be kept under an inert atmosphere (e.g., nitrogen) for long-term storage to maintain stability and purity. Keep away from heat, sparks, and open flames.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 95.0%
Isomeric Purity ((E)-isomer)	≥ 98.0%
Refractive Index (20°C)	1.430 - 1.440
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.