Overview
Ethyl acetate is an organic compound that serves as one of the most commonly used industrial solvents. First synthesized in the 19th century, it has become indispensable across multiple industries due to its favorable solvent properties and relatively low toxicity compared to alternatives. As an ester derived from ethanol and acetic acid, ethyl acetate offers an excellent balance of solvent power and evaporation rate. Its pleasant fruity odor makes it suitable for food applications, though industrial grades typically contain impurities that make them unsuitable for direct consumption.
Physical and Chemical Properties
Ethyl acetate is a colorless, volatile liquid with a characteristic sweet smell resembling pear drops. Its relatively low boiling point (77.1°C) makes it easy to evaporate, which is valuable in coating applications where fast drying is required. The compound is moderately polar, allowing it to dissolve a wide range of organic compounds while being only slightly soluble in water (8.3 g/100 mL at 20°C). It forms azeotropes with water and several alcohols, which is important in separation processes. Chemically, ethyl acetate can undergo hydrolysis to reform ethanol and acetic acid, especially in acidic or basic conditions.
Main Applications
In the paints and coatings industry, ethyl acetate serves as a key solvent for nitrocellulose lacquers, acrylics, and other coating systems. Its rapid evaporation helps achieve quick drying times essential for production efficiency. The pharmaceutical industry utilizes ethyl acetate as an extraction solvent and reaction medium. It's particularly valuable in antibiotic production and tablet coating processes. Food manufacturers employ high-purity grades as a flavoring agent, while the printing industry uses it in flexographic and gravure inks. Emerging applications include use as a cleaner for electronic components and in biodiesel purification.
Safety and Storage
As a flammable liquid (flash point -4°C), ethyl acetate requires careful handling away from ignition sources. Storage tanks and containers should be grounded to prevent static discharge, and ventilation must prevent vapor accumulation. While not highly toxic, prolonged exposure can cause central nervous system depression and irritation to eyes and respiratory tract. Proper PPE including chemical goggles and vapor respirators should be used when handling large quantities. Spill containment measures should include non-combustible absorbents, as water application may spread the fire.
B2B Procurement Guide
Industrial buyers should specify technical grade (typically 99.5% purity) or higher grades (99.9%) for sensitive applications. Common packaging options include 200L drums, isotanks, and bulk shipments for large-scale users. Key quality parameters to verify include water content (max 0.1%), acidity (as acetic acid, max 0.01%), and non-volatile residue. For international shipments, ensure compliance with transportation regulations (UN 1173, Class 3). Long-term contracts with price adjustment clauses can help manage volatility in this commodity chemical market.
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