Aldehyde C-11 Undecylenic, with CAS number 112-45-8, is a synthetic fragrance ingredient classified as an aldehyde. It is known for its unique, waxy, and slightly fatty odor profile, which can add complexity and depth to fragrance compositions. In perfumery, Aldehyde C-11 Undecylenic is often used to enhance floral and fruity accords, providing a fresh and clean character that can elevate the overall scent experience. It typically sits in the middle to top notes of a formula, contributing to the initial impression of a fragrance while also supporting the development of the heart notes. As with many aldehydes, it is important to consider safety and regulatory aspects when formulating with Aldehyde C-11 Undecylenic. While specific IFRA restrictions may apply, it is advisable for perfumers to consult the latest guidelines and safety data sheets to ensure compliance and safe usage levels in cosmetic applications. Overall, this ingredient serves as a versatile component in modern perfumery, allowing for creative expression while adhering to safety standards. — AI-generated summary, 2026-09-02.
Composition, IFRA restriction figures, allergen concentrations and where this material is bought are part of Perfume Foundry’s curated library and need an account. Create one or sign in.
Other ingredients whose composition declares this material as a constituent. The percentage shown is the supplier-declared concentration in that parent.
| Ingredient | % | Range |
|---|---|---|
| ANIMAL ACCORD | — | — |
| APPLE | — | — |