Description

4-Hexenal is a six-carbon, alpha,β-unsaturated aldehyde with the CAS registry number 2100-19-8, valued for its unique chemical reactivity and potent organoleptic properties. This compound serves as a versatile intermediate and a key flavor and fragrance ingredient, offering a characteristic green, leafy, and slightly fatty olfactory profile. It is primarily sought after by manufacturers in the flavor and fragrance industry, as well as by chemical synthesis specialists developing fine chemicals and pharmaceutical intermediates.

Application

• Flavor and Fragrance Formulation: A key component for imparting fresh, green, and natural notes reminiscent of cut grass, leaves, and unripe fruits in perfumes, cosmetics, and food flavorings.
• Chemical Synthesis Intermediate: Utilized in organic synthesis, particularly in aldol condensation and Michael addition reactions, to build more complex molecular structures for pharmaceuticals and agrochemicals.
• Aroma Chemical Production: Acts as a precursor or a modifying agent in the synthesis of other valuable aroma chemicals, enhancing the depth and complexity of fragrance accords.
• Research and Development: Serves as a standard or a building block in academic and industrial R&D labs for studying reaction mechanisms and developing new synthetic methodologies.
• Specialty Chemical Manufacturing: Used in the production of specialty polymers, coatings, or additives where its aldehyde functionality can be leveraged for cross-linking or modification.

Basic Information

Product Name	4-Hexenal
CAS No.	2100-19-8
Molecular Formula	C₆H₁₀O
Molecular Weight	98.14 g/mol
Synonyms	trans-4-Hexenal; (E)-4-Hexenal; 4-Hexen-1-al; Hex-4-enal; Leaf Aldehyde; Green Leaf Aldehyde; (E)-Hex-4-enal; 4-Hexenal (FEMA 3925)
EINECS	218-258-8

Quality Control

Our 4-Hexenal is produced and handled under strict quality management protocols to ensure batch-to-batch consistency and purity. We provide comprehensive Certificates of Analysis (COA) for each lot, detailing key parameters such as assay, identity, and impurity profiles. For customers with specific requirements, we can align our quality control with relevant industry standards, including FEMA and FCC guidelines for flavor-grade materials.

Storage

Preserve in a tightly closed container, protected from light. Due to its properties of being easily oxidized (store under inert atmosphere) and highly volatile, it is recommended to store under an inert gas (e.g., nitrogen or argon) in a cool, well-ventilated place. Ideal storage temperature is between 2°C and 8°C to maximize stability and shelf life. Keep away from heat, sparks, and open flames.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 95.0%
Isomeric Purity ((E)-isomer)	≥ 90.0%
Refractive Index (20°C)	1.428 - 1.432
Specific Gravity (20/20°C)	0.845 - 0.855

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