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Ethyl Acetate
Chemical Formula: CH₃COOCH₂CH₃
Molar Mass: 88.11 g/mol
CAS Number: 141-78-6
Appearance: Clear, colorless liquid with a sweet, fruity odor

Ethyl acetate is a volatile, low-viscosity organic solvent belonging to the ester family. It is widely used in industry and laboratories due to its excellent solvency power, rapid evaporation, and relatively low acute toxicity. Its high volatility and pleasant odor make it suitable for various technical applications, though it must be handled with care due to its flammability.

Chemical and Physical Properties

• Density: 0.902 g/cm³ at 20 °C

• Melting Point: −83.6 °C

• Boiling Point: 77 °C

• Solubility in Water: Slightly soluble (~8.3 g/100 mL at 20 °C)

• Miscibility: Miscible with ethanol, acetone, benzene, and chloroform

• Vapor Pressure: ~10 kPa at 20 °C

• Flash Point: −4 °C (closed cup)

• Autoignition Temperature: ~427 °C

• Explosion Limits: 2.1% – 11.5% (in air)

Applications

1. Industrial Solvent

• Used in paints, coatings, varnishes, and adhesives for its rapid evaporation and strong solvency.

2. Chemical Synthesis

• Employed as a reaction solvent and intermediate in organic processes.

3. Laboratory Use

• Frequently used in chromatographic separations and sample preparation.

4. Surface Cleaning and Degreasing

• Acts as a fast-evaporating solvent for cleaning metal and glass surfaces.

Functional Characteristics

• Volatility: High; allows for fast drying in formulations

• Flammability: Highly flammable and vapor-forming at room temperature

• Reactivity: Reacts with strong oxidizers and bases; can hydrolyze slowly in water

Safety

Signal Word: Danger

Hazard Statements:

• H225: Highly flammable liquid and vapor

• H319: Causes serious eye irritation

• H336: May cause drowsiness or dizziness

• EUH066: Repeated exposure may cause skin dryness or cracking

Precautionary Statements:

• P210: Keep away from heat/sparks/open flames/hot surfaces – No smoking

• P243: Take action to prevent static discharges

• P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing

First Aid Measures

Inhalation: Move person to fresh air. If symptoms occur, seek medical attention.
Skin Contact: Wash with soap and water. If irritation persists, consult a physician.
Eye Contact: Rinse cautiously with water for several minutes. Seek medical help if irritation continues.
Ingestion: Rinse mouth. Do not induce vomiting. Seek medical attention.

Handling and Storage

• Store in a cool, well-ventilated place, away from ignition sources and incompatible materials (oxidizers, strong bases)

• Keep containers tightly closed and grounded

• Use explosion-proof equipment and non-sparking tools

• Avoid inhaling vapors; use only in well-ventilated areas

Environmental Considerations

Ethyl acetate is readily biodegradable, but high vapor concentrations may contribute to photochemical smog. Prevent large releases into the environment. Dispose of according to local environmental regulations.