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9-DECENYL PROPIONATE.

Optional CAS 68480-06-8 / PERFUMING

A multifunctional ester compound that serves as both a fragrance component and mild emollient in skincare formulations. This linear ester metabolizes into 9-decen-1-ol and propionic acid on skin contact, offering gentle conditioning properties alongside its primary perfuming function.

perfuming masking emollient

Science

Functions through enzymatic hydrolysis at the skin surface, breaking down into constituent alcohol and acid components that provide mild emollient benefits. Additionally disrupts stratum corneum lipid organization to act as a subtle penetration enhancer while masking unwanted odors in formulations.


Research

High confidence
Effective range 0.1–5%
Optimal

1%

Key findings

  1. 01 RIFM human patch testing at 5% concentration demonstrated non-irritating and non-sensitizing properties across test cohort
  2. 02 IFRA safety evaluations confirm no systemic toxicity concerns for Cramer Class I linear esters at concentrations up to 1.4%

Transparency

Not commonly dusted

Primarily used as a fragrance ingredient at low concentrations, making dusting less relevant for this compound


The Formula

Solubility
Oil
Optimal pH 4 – 7.5
0 7 14

Stability

Ester bond vulnerable to hydrolysis under extreme pH conditions; maintains optimal stability in slightly acidic to neutral environments typical of skincare products

Conflicts

  • Strong oxidizing agents
  • Strong acids
  • Strong bases

Safety

CIR Status
Not reviewed by CIR but evaluated by RIFM and regulated by IFRA standards
Max tested
5%
Pregnancy
Safe
Sensitization risk Low

IFRA category-specific limits typically restrict use to under 1% in leave-on products; classified as Cramer Class I material with favorable safety profile


Your Skin

Yes Normal
Yes Dry
Yes Oily
No Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Optional

A well-tolerated fragrance ingredient with mild conditioning benefits, suitable for most skin types when used within regulatory guidelines.


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References