25166-87-4

Basic information

• Product Name: HEXENAL
• Synonyms: TRANS-4-HEXENAL;(E)-hex-4-enal
• CAS NO: 25166-87-4
• Molecular Formula: C₆H₁₀O
• Molecular Weight: 98.143
• Product Categories: aldehyde Flavor
• Mol File: 25166-87-4.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 127.2 °C at 760 mmHg
• Flash Point: 18 °C
• Appearance: /
• Density: 0.828 g/cm³
• CAS DataBase Reference: HEXENAL(CAS DataBase Reference)
• NIST Chemistry Reference: HEXENAL(25166-87-4)
• EPA Substance Registry System: HEXENAL(25166-87-4)

Safety Data

• Hazardous Substances Data: 25166-87-4(Hazardous Substances Data)

Usage

Chemical Properties

trans-4-hexenal has a “green” vegetable odor

Aroma threshold values

Detection at 0.0003 ppm in water. Detection and recognition in air at 0.0029 and 0.014 mg/m3, respectively

Upstream product

• 1120-72-5 2-Methylcyclopentanone 
• 60653-70-5 trans-hex-4-enyl hydroperoxide 
• 525576-09-4 1-(2-ethoxy-cyclobutyl)-ethanol 
• 929-36-2 1-ethoxy-hexa-1,4-diene 

Downstream Products

• 942-92-7 caprophenone 
• 4535-44-8 (E)-1-phenylhex-4-ene-1-ol 
• 1331784-87-2 (2E,6E)-benzyl oct-2,6-dienoate 
• 1331784-89-4 C₁₅H₁₈O₄ 

Relevant articles and documents

Photocatalytic One-Pot Synthesis of Homoallyl Ketones via a Norrish Type i Reaction of Cyclopentanones

A photocatalytic synthesis of homoallyl ketones was achieved via a one-pot procedure starting from a Norrish Type I reaction of cyclopentanones, followed by a decatungstate-catalyzed hydroacylation of electron-deficient olefins by the resulting 4-pentenals. The site-selective formyl H-abstraction in the second step can be explained by radical polar effects in the transition state.