3D model image of OctadecanalStructure formular image of Octadecanal

Octadecanal, a long-chain fatty aldehyde, is known for its waxy, floral, and slightly fatty aroma. In perfumery, it is used in small amounts to add body and depth to floral compositions, contributing to the complexity and richness of the scent without overwhelming the other notes.

Employed to add depth and a subtle waxy, floral note to perfumes, enhancing the richness and complexity of floral compositions.

IUPAC Name: octadecanal
CAS Number: 638-66-4
Molecular Formula: C18H36O
Molecular Weight: 268.50 g/mol
Boiling Point: 320.00 °C (608.00 °F)
Melting Point: 38.00 °C (100.40 °F)
Class: Aldehyde
Use/s: Scent
1: OCTADECANAL 2: Stearaldehyde 3: Stearyl aldehyde 4: Octadecyl aldehyde 5: n-Octadecanal 6: Octadecanaldehyde 7: 1-octadecanal 8: PH4GZ7JT4C 9: MFCD03790007
Chemist Says
Scent profile
Scent profiles are inherently subjective and can significantly differ among individuals, and may also be influenced by the conditions at the time of evaluation. The information provided here is a synthesis of data from diverse sources, including books, cross-references, artificial intelligence analyses, and chemical research sites, aiming to present a comprehensive overview. We've distilled this information to highlight the most frequently observed scent profiles for each molecule or compound, offering a generalized perspective.

1: Waxy, Floral, Slightly Fatty
2: Waxy, Slightly Floral, Fatty
3: Fatty, waxy, with a strong and unpleasant character


Octadecanal Mass Spectrometry