Ethyl Trans-2-Octenoate（CAS#7367-82-0）

Physical & Chemical Properties

• ‌Appearance‌: ‌Colorless to slightly yellow transparent liquid‌
• ‌Odor Profile‌: ‌Fruity, pear peel, tropical fruit, with a fatty nuance‌, classified as ‌fruity-type‌ (fruity)
• ‌Density‌: 0.88–0.883 g/mL (25 °C)
• ‌Boiling Point‌: ‌215.6 °C‌ (760 mmHg) or 222 °C (literature value)
• ‌Flash Point‌: ‌92.5 °C‌ (open cup) or 209 °F (approx. 98.3 °C)
• ‌Refractive Index‌: n₂₀/D 1.4410 (lit.)
• ‌LogP‌: 2.686–3.97 (varies by source)
• ‌Solubility‌: Soluble in ethanol, ether, chloroform, and other organic solvents

Safety & Storage

• ‌GHS Pictogram‌: GHS05 (Corrosive)
• ‌Hazard Statement‌:
  • H314: Causes severe skin burns and eye damage
• ‌Precautionary Statements‌:
  • P260: Do not breathe vapors
  • P280: Wear protective gloves, eye protection, and face protection
  • P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing
  • P310: Immediately call a poison center or doctor
• ‌WGK Germany‌: ‌3‌ (Severe hazard to aquatic environment)
• ‌Storage Conditions‌: Store at ‌room temperature, in a dry, light-resistant sealed container‌, away from oxidizing agents and strong bases

Uses & Applications

• ‌Fragrance & Flavor‌:
  • Used as a ‌fruity-type flavoring agent‌, especially in ‌pear, tropical fruit, and green-type fragrance formulations‌
  • Widely applied in beverages, candies, baked goods, and personal care products
  • Serves as a ‌precursor to natural aroma components‌, enhancing the authenticity and complexity of fragrances
• ‌Food Additive‌:
  • Listed as ‌JECFA No. 1812‌, approved for use in food flavoring
  • Not explicitly included in FEMA GRAS list, but recognized as a legal ingredient in flavor industry practice
• ‌Research & Biochemical Reagent‌:
  • Used in ‌olfactory receptor studies and flavor metabolism research‌
  • Acts as an ‌organic synthesis intermediate‌ for constructing more complex esters or functional molecules
• ‌Industrial Raw Material‌:
  • Used to synthesize other flavor derivatives, such as ‌ethyl (E)-2-octenoate analogs‌ or ‌methyl esters‌, expanding its application in fragrance chemistry

Synthesis Method

Typically synthesized via ‌acid-catalyzed esterification‌ of ‌trans-2-octenoic acid‌ with ‌ethanol‌. Alternative routes include ‌olefin carbonylation‌ or ‌microbial fermentation‌. Purification is achieved through ‌vacuum distillation‌ or ‌column chromatography‌.

⚠️ ‌Note‌: This product is a chemical substance, ‌not for direct consumption or medicinal use‌. For industrial, research, or flavor formulation purposes only. Purchase requires appropriate qualifications.