Overview
Hexanoic acid, commonly known as caproic acid, is a medium-chain fatty acid with a six-carbon backbone. It is naturally found in animal fats and oils, such as coconut oil and palm oil. Industrially, it is synthesized through the oxidation of hexanol or other methods. Its primary use lies in the production of esters, which are essential in artificial flavors and fragrances. The compound is also utilized in the pharmaceutical industry for drug formulation and as an intermediate in chemical synthesis. Due to its lubricating properties, it finds applications in the manufacturing of specialty lubricants. Hexanoic acid is a versatile chemical with a broad range of industrial uses.
Physical and Chemical Properties
Hexanoic acid is a colorless to slightly yellow oily liquid with a pungent, unpleasant odor. It has a molecular weight of 116.16 g/mol and a density of 0.929 g/cm³ at 20°C. The acid has a melting point of -3.4°C and a boiling point of 205.8°C. It is slightly soluble in water but readily dissolves in organic solvents like ethanol and ether. Chemically, hexanoic acid behaves like a typical carboxylic acid, forming salts and esters. It can undergo reactions such as esterification, halogenation, and hydrogenation. Its chemical stability under normal conditions makes it suitable for various industrial applications.
Main Applications
Hexanoic acid is predominantly used in the flavor and fragrance industry, where it serves as a precursor for esters like ethyl hexanoate, which imparts fruity aromas. These esters are widely used in food flavorings, perfumes, and cosmetics. In the pharmaceutical sector, hexanoic acid is employed in the synthesis of active pharmaceutical ingredients (APIs) and as a buffering agent. Additionally, the acid is used in the production of lubricants and plasticizers. Its derivatives are found in specialty chemicals for textiles, coatings, and adhesives. The versatility of hexanoic acid makes it a valuable raw material in multiple industries.
Safety and Storage
Hexanoic acid is corrosive and can cause severe skin and eye irritation upon contact. Proper personal protective equipment (PPE), including gloves and goggles, should be worn when handling this chemical. Inhalation of vapors may irritate the respiratory tract, so adequate ventilation is essential. Storage should be in a cool, dry, well-ventilated area away from sources of ignition and incompatible materials like strong oxidizers. Containers must be tightly sealed to prevent moisture absorption and contamination. A Safety Data Sheet (SDS) should always be consulted for detailed handling and emergency measures.
B2B Procurement Guide
When procuring hexanoic acid, it is crucial to verify the supplier's credentials and ensure they provide a Certificate of Analysis (COA) to confirm purity and quality. Bulk purchases may offer cost advantages, but storage capacity and shelf life should be considered. Prices typically range from $5 to $10 per kg, depending on quantity and purity. Buyers should also evaluate the supplier's compliance with international safety and environmental standards. Reliable logistics partners are necessary to ensure safe and timely delivery. Always request samples for testing before large-scale orders to ensure the product meets your specifications.
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