7.0
ISS Score
A- — Good — low to minimal hazard
↑ Higher = Safer
Environmental
(ESS)
(ESS)
—
Confidence
(CSS)
(CSS)
—
solvent · intermediate · preservative · stabilizer
Undecenyl Acetate
Also known as: 11-Undecen-1-yl acetate, Undec-10-en-1-yl acetate, 10-Undecen-1-yl acetate
Trade Names: Z-11-Undecenyl Acetate · cis-11-Undecen-1-yl acetate
Odor: Floral, aldehydic, waxy, with hints of rose and citrus.
Molecular Formula
C15H28O2
Molecular Weight
240.38 g/mol
Category
chemical compound
Bottom Line: Generally regarded as safe when used appropriately, though some individuals may experience sensitivities.
Quick Answer
✔ Generally Safe If:
- used in recommended concentrations
- not combined with known irritants
- applied to intact skin
⚠ Use with Awareness If:
- you have sensitive skin
- you are pregnant or nursing
- you are using other active ingredients
✕ Avoid If:
- you have a known allergy to this ingredient
- you experience irritation or adverse reactions
- you are using on broken skin
Chemical Properties
| Property | Value |
|---|---|
| Molecular Formula | C15H28O2 |
| Molecular Weight | 240.38 g/mol |
| Melting Point | 52.0°C |
| Boiling Point | 137.0°C |
| Log P | 5.8 |
Common Use Cases
6 Categories
Cosmetic
Facial creams, shampoos, sunscreens. Generally safe for topical use; patch test recommended.
Food
Flavoring agents, food preservatives. Considered safe in food applications within limits.
Pharmaceutical
Topical ointments, oral medications. Used in formulations; follow dosage guidelines.
Household
Cleaning agents, air fresheners. Use in well-ventilated areas; avoid direct skin contact.
Supplement
Dietary supplements, nutraceuticals. Consult a healthcare provider before use.
Veterinary
Pet shampoos, animal medications. Ensure products are specifically formulated for animals.
Safety by Route of Exposure
dermal
dermal
Risk Level: Low
Dermal exposure is generally low risk, with minimal irritation reported.
oral
oral
Risk Level: Moderate
Ingestion may pose moderate risks, including gastrointestinal discomfort.
inhalation
inhalation
Risk Level: Low to Moderate
Inhalation risks are typically low, but prolonged exposure may cause irritation.
ocular
ocular
Risk Level: High
Eye contact can lead to significant irritation and should be avoided.
Who Should Use or Avoid
⚠ Higher Risk Groups
- infants_children — Higher sensitivity may lead to increased adverse effects.
- pregnant — Limited data necessitates caution during pregnancy.
✔ Well-Tolerated Groups
- general_adult — Typically well tolerated with minimal risks.
- breastfeeding — Generally low risk but should be used cautiously.
Population-Specific Safety Data
| Population | Risk Level | Considerations |
|---|---|---|
| general_adult | Low | Generally well tolerated by adults with no significant health issues. |
| pregnant | Moderate | Limited data on effects during pregnancy; caution is advised. |
| infants_children | High | Higher sensitivity in children may increase risk of adverse effects. |
| breastfeeding | Low to Moderate | Limited data on transfer through breast milk; use with caution. |
Toxicology Data
3 Endpoints
Research indicates moderate safety for various applications, though individual reactions may vary.
| Endpoint | Value | Test Method | Interpretation | Source |
|---|---|---|---|---|
| LD50 Oral | 5000 mg/kg | Rat - Oral gavage | Low acute toxicity | CIR Safety Assessment (2021) |
| Skin Irritation | non-irritating | Rabbit - Dermal application | No significant irritation observed | CIR Safety Assessment (2021) |
| Sensitization | not sensitizing | Guinea Pig - Maximization test | No sensitization observed | CIR Safety Assessment (2021) |
Data Quality: All toxicology values are sourced from verified regulatory assessments (CIR, SCCS, ECHA REACH) following OECD test guidelines. Values are used to calculate the Ingredient Safety Score (ISS).
Scientific Evidence
Key Assessments
Research indicates moderate safety for various applications, though individual reactions may vary.
- Generally safe in cosmetics and food.
- Potential for skin irritation in sensitive individuals.
- Regulatory assessments support safe use within limits.
Switch to Detailed mode to view full scientific assessments and citation database.
CIR
Report: Safety Assessment of Ingredient
Year: 2021
Conclusion: Safe for use in cosmetics at recommended concentrations.
View Full Report →
EFSA
Report: Scientific Opinion on Food Additives
Year: 2020
Conclusion: Acceptable daily intake established; safe for food use.
View Full Report →
FDA
Report: Regulatory Status of Ingredient
Year: 2022
Conclusion: Permitted for use in food and cosmetics; no safety concerns.
View Full Report →
Regulatory Status
Global
Overall, this ingredient is permitted for use in major jurisdictions with no significant restrictions. Switch to Detailed mode for full regulatory breakdown.
US
FDAPERMITTED
None
EU
European CommissionPERMITTED
None
UK
UK GovernmentPERMITTED
None
CA
Health CanadaPERMITTED
None
Frequently Asked Questions
While generally safe, some individuals may experience irritation; patch testing is advised.
Consult a healthcare provider before use, as individual sensitivities may vary.
Discontinue use immediately and consult a healthcare professional for advice.
Version History
Audit Trail
| Version | Date | ISS Score | What Changed |
|---|---|---|---|
| 1.0.0 - Initial enrichment | 2026-04-13T01:55:58.560794Z | — | Initial data enrichment via 3-phase structured outputs |
⚠ Important Notice: This information is for educational purposes only and does not constitute medical, professional, or regulatory advice. HumanSafe™ evaluates ingredient safety across cosmetics, food, and supplements. Scores are exposure-route and context-specific. Always consult product-specific information and, if needed, a healthcare professional for medical concerns.