what is ethyl acetate EA(CAS 141-78-6)?
Ethyl acetate (EA), also known as ethyl ethanoate, is an organic compound with the chemical formula C₄H₈O₂. Ethyl acetate CAS number is 141-78-6. It is an ester containing the functional group -COOR (a double bond between carbon and oxygen), with a melting point of -84°C, boiling point 76.6–77.5°C, flash point 4°C, density 0.902 g/cm³, and appears as a colorless transparent liquid. Ethyl acetate undergoes common ester reactions including hydrolysis, amination, ester exchange, and reduction. It is primarily used as a solvent, food flavoring agent, and degreasing agent.
At room temperature, it is a colorless transparent liquid with a strong fruity aroma (e.g., pear, banana), a key characteristic for its use in flavorings; - Low boiling point (approximately 77.1°C), high volatility, and low density (approximately 0.902 g/cm³ at 20°C), less than water; - Miscible with most organic solvents including ethanol, diethyl ether, and chloroform; slightly soluble in water, with its aqueous solution being neutral.
Exhibits typical ester reaction characteristics, undergoing hydrolysis under acid or base catalysis to produce acetic acid and ethanol, with alkaline hydrolysis (saponification) being more complete; It undergoes ester hydrolysis to form new esters and alcohols and participates in addition reactions. It is flammable, and its vapors form explosive mixtures with air within a concentration range of 2.0% to 11.5% (by volume). Exposure to open flames or high temperatures can ignite combustion, necessitating strict fire and explosion prevention measures.
Paint Thinners: Primary solvent for nitrocellulose lacquers and inks (accounting for 50% of global consumption)
Edible Flavoring Agents: Used to formulate fruit flavors (e.g., strawberry, banana)
Food Additives: Used as extraction solvents (requires food-grade purity)
| 141-97-9 | |
| CH₃COCH₂COOC₂H₅ / 130.14 g·mol⁻¹ | |
| Characteristic, fruity/acetone-like | |
| ~180 °C (760 mmHg) | |
| ~ −53 °C | |
| ~1.03 g·cm⁻³ (20 °C) | |
| ~130 g·L⁻¹ (slightly soluble) | |
| ~0.26 hPa (20 °C) | |
| Flash point ≈ 70–74 °C; autoignition ~350 °C | |
| H225 (Highly flammable liquid & vapour); H314 (Causes severe skin burns and eye damage); H336 (May cause drowsiness or dizziness) | |
| ; GHS02 (flame), GHS05 (corrosion), GHS07 (exclamation) | |
| H225, H314, H336 | |
| Keep away from heat/sparks/open flame; wear gloves/eye/face protection; avoid inhalation; store cool & well-ventilated | |
| Inhalation: move to fresh air; Skin: remove contaminated clothing, wash with water; Eyes: rinse cautiously for several minutes and seek medical attention; Ingestion: do NOT induce vomiting-seek medical help. | |
| Handle in well-ventilated area; ground/bond containers; keep tightly closed in cool, dry place away from ignition sources | |
| Local exhaust ventilation; chemical-resistant gloves; safety goggles/face shield; protective clothing; where vapors possible, respirator per local regs | |
| Acute oral LD₅₀ (rat) reported ~3980 mg·kg⁻¹; may irritate respiratory tract, skin, eyes; affects CNS at high exposures | |
| UN number and packing group depend on quantity/classification in local regs - follow current SDS and transport rules |
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| 108-94-1 | |
| 80-62-6 | |
| 2-Methoxyethanol | 109-86-4 |
| 79-09-4 | |
| 107-21-1 | |
| N, N-Dimethylacetamide (DMAC) | 127-19-5 |
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