Ethyl acetate (CAS: 141-78-6), also known as ethyl ethanoate, is a significant organic ester widely utilized for its versatile solvent properties and characteristic fruity aroma. Chemically represented by the formula $CH_3COOCH_2CH_3$, it is synthesized via the Fischer esterification of ethanol and acetic acid, typically in the presence of an acid catalyst. As a polar aprotic solvent, it provides an optimal balance between high solvency power and low toxicity, often serving as a safer alternative to aromatic or chlorinated hydrocarbons. Its relatively low boiling point and high volatility facilitate rapid evaporation, which is a critical requirement in industrial coating and printing processes. Beyond synthetic applications, ethyl acetate occurs naturally in various fruits and fermentation byproducts. It is valued in laboratory settings for liquid-liquid extraction and chromatography. While classified as a highly flammable liquid, its high biodegradability and low bioaccumulation potential make it an environmentally preferred choice in modern chemical manufacturing.
**High Solvency Power:** Efficiently dissolves a broad spectrum of resins, polymers, and nitrocellulose, ensuring uniform formulation stability.
**Rapid Evaporation Rate:** Its high volatility allows for quick drying times in coatings, inks, and adhesives, significantly increasing industrial throughput.
**Improved Safety Profile:** Offers a lower systemic toxicity compared to traditional solvents like toluene or methyl ethyl ketone (MEK).
**Biodegradability:** Easily broken down by environmental microorganisms, resulting in low persistence and minimal ecological impact.
**Economic Viability:** Produced through well-established, high-yield synthetic routes, ensuring a consistent and cost-effective global supply for large-scale operations.
**Molecular Specifications:** Molar mass of 88.11 g/mol with a chemical formula of $C_4H_8O_2$.
**Thermal Properties:** Boiling point of 77.1°C (170.8°F) and a melting point of -83.6°C.
**Flammability Data:** Flash point of -4°C (24.8°F), necessitating its classification as a Class 3 flammable liquid (GHS).
**Solubility Profile:** Partially soluble in water (approx. 8% at 25°C); however, it is completely miscible with most organic solvents, including ethanol, acetone, and diethyl ether.
**Physical Constants:** Density of 0.902 g/cm³ at 20°C and a vapor pressure of approximately 93 mmHg at 20°C.
• Electrical and electronics
• Connectors, switches, PCB housings, terminal blocks
• Automotive
• Under-hood components, interior assemblies, cable conduits
• Wire and cable
• Insulation layers, sheathing, jacketing materials
• Construction
• Plastic fittings, conduits, insulation panels
• Consumer appliances
• Enclosures, adapters, plugs, casings
• Industrial components
• Fiber-reinforced composites, flame-retardant masterbatches
• Compatible polymers
• PA6, PA66
• PBT, PET
• PE, PP
• Blends and copolymers requiring halogen-free flame retardancy
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