Hexanoic Acid[2]
Overview
Hexanoic Acid, also known as Caproic Acid, is a six-carbon saturated fatty acid. It is naturally found in animal fats and some plant oils. Industrially, it is synthesized through the oxidation of hexanol or derived from the fractional distillation of coconut or palm oil fatty acids. Hexanoic Acid is valued for its role in the production of esters, which are widely used in flavorings, fragrances, and plasticizers. Its slightly pungent odor is characteristic of medium-chain fatty acids, making it distinguishable in various applications.
Physical and Chemical Properties
Hexanoic Acid is a colorless to pale yellow oily liquid at room temperature. It has a density of 0.927 g/cm³ and a melting point of -3.4°C, transitioning to a solid at lower temperatures. Its boiling point is 205.8°C, making it relatively stable under normal industrial conditions. The acid is slightly soluble in water but dissolves readily in organic solvents like ethanol and ether. Its carboxyl group enables it to participate in typical carboxylic acid reactions, such as esterification and salt formation, which are crucial for its industrial applications.
Main Applications
Hexanoic Acid is predominantly used in the production of esters, which serve as key ingredients in perfumes, artificial flavors, and food additives. For example, ethyl hexanoate is a common ester derived from Hexanoic Acid, imparting a fruity aroma used in beverages and confectionery. In the pharmaceutical industry, Hexanoic Acid is utilized as an intermediate in drug synthesis. Additionally, it finds applications in the manufacture of lubricants, plasticizers, and rubber chemicals, showcasing its versatility across multiple sectors.
Safety and Storage
Hexanoic Acid can cause skin and eye irritation upon contact, necessitating the use of gloves and goggles during handling. Proper ventilation is essential to avoid inhalation of vapors, which may cause respiratory discomfort. Storage should be in a cool, dry place, away from direct sunlight and ignition sources. Containers must be tightly sealed to prevent moisture absorption and contamination. In case of spills, neutralize with a weak base and dispose of in accordance with local regulations.
B2B Procurement Guide
When procuring Hexanoic Acid, B2B buyers should prioritize suppliers with ISO or GMP certifications to ensure product quality. Key specifications to verify include purity (typically 98-99%), acidity levels, and the absence of heavy metals. Bulk purchases often attract discounts, but buyers should confirm packaging options (e.g., drums or IBCs) and logistical support. Request safety data sheets (SDS) and conduct lab tests for critical applications to avoid quality discrepancies.
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