Ethyl acetate CAS 141-78-6

Ethyl acetate, with the CAS number 141-78-6, is an organic compound that is widely recognized for its distinctive sweet smell, reminiscent of pears or certain glues. It is classified as an ester, formed through the reaction of ethanol and acetic acid, and is characterized by its excellent solvency properties, making it a versatile solvent in various applications.
Chemical Properties
Chemical Formula: C₄H₈O₂
Molar Mass: 88.11 g/mol
Appearance: Colorless liquid
Odor: Fruity, similar to nail polish
Boiling Point: 77.1 °C (170.8 °F)
Melting Point: -83.6 °C (-118.5 °F)
Density: 0.902 g/cm³
Solubility: Slightly soluble in water (8.3 g/100 mL at 20 °C) and miscible with organic solvents like ethanol and acetone.
Uses
Ethyl acetate is utilized across various industries due to its solvent properties:
Coatings: It is commonly used as a solvent in paints, varnishes, and lacquers, helping to dissolve and disperse other components effectively.
Adhesives: Its strong solvency makes it ideal for use in adhesives and sealants.
Extraction: Ethyl acetate serves as an extraction solvent in food processing and pharmaceuticals, particularly in the decaffeination of coffee beans and the extraction of flavors and fragrances.
Chromatography: In laboratory settings, it is a preferred solvent for column and thin-layer chromatography, facilitating the separation of compounds based on their affinities to the stationary phase.
Environmental Research: Ethyl acetate is studied for its biodegradability and potential impacts on air quality, contributing to the understanding of solvent emissions and their regulatory management.
Safety and Environmental Impact
While ethyl acetate is considered to have relatively low toxicity, exposure can cause mild irritation to the eyes, nose, and throat at high concentrations. It is classified as a volatile organic compound (VOC) and can contribute to air pollution if not managed properly. Its vapors may cause drowsiness or dizziness, and it is highly flammable, necessitating careful handling and storage.
In summary, ethyl acetate is a versatile and widely used solvent with significant applications in industrial, laboratory, and environmental contexts, characterized by its pleasant odor and effective solvency properties.