Description

Hexanoic Acid, 4-Ethyl- is a branched-chain fatty acid derivative, also known as 4-Ethylcaproic Acid, with the CAS number 6299-66-7. This compound serves as a versatile intermediate and building block in organic synthesis, valued for its unique alkyl side chain which imparts specific steric and chemical properties. It is primarily utilized by manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for the synthesis of active ingredients, fragrances, and functional materials.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs) and other fine chemicals.
• Agrochemical Synthesis: Used in the production of herbicides, pesticides, and plant growth regulators.
• Fragrance & Flavor Industry: Acts as a precursor for esters and other compounds used in creating specific aromatic profiles.
• Lubricant & Plasticizer Additive: Employed in the manufacture of specialty esters that serve as synthetic lubricants or polymer plasticizers.
• Organic Synthesis Reagent: Utilized in various organic reactions, including esterification and amidation, to introduce the 4-ethylhexanoic acid moiety.
• Research & Development: Serves as a standard or starting material in chemical research for novel compound development.

Basic Information

Product Name	Hexanoic Acid, 4-Ethyl-
CAS No.	6299-66-7
Molecular Formula	C8H16O2
Molecular Weight	144.21 g/mol
Synonyms	4-Ethylcaproic Acid; 4-Ethylhexanoic Acid; 2-Butylbutyric Acid; Butylethylacetic Acid; 3-Carboxyheptane; Ethylhexanoic Acid (isomer); 4-Ethyl-n-caproic Acid; 4-Ethyl-hexansaeure (German)
EINECS	228-568-3

Quality Control

Our Hexanoic Acid, 4-Ethyl- is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for industrial and fine chemical synthesis. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Recommended storage temperature is between 15°C and 25°C. As a strong acid/organic solvent, ensure containers are kept tightly sealed to prevent moisture absorption and minimize exposure to air.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Refractive Index (n20/D)	1.424 - 1.428
Density (g/mL at 20°C)	0.905 - 0.915
Water Content (KF)	≤ 0.5%

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