BENZENEPROPANAL, 4-ETHYL-.ALPHA.,.ALPHA.-DIMETHYL- — Ingredient Safety Profile | HumanSafe™
56.0
ISS Score
Moderate — Score based on regulatory approval status in 4 jurisdiction(s), route-level risk assessment across multiple routes, and 3 toxicology endpoints from safety assessments.
Higher = Safer
Environmental
(ESS)
Confidence
(CSS)
fragrance ingredient · aroma compound · solvent · flavoring agent

BENZENEPROPANAL, 4-ETHYL-.ALPHA.,.ALPHA.-DIMETHYL-

CAS No.: 67634-15-5  ·  INCI: BENZENEPROPANAL, 4-ETHYL-.ALPHA.,.ALPHA.-DIMETHYL-  ·  Updated: 2026-04-19
Category
fragrance

Bottom Line: Generally regarded as safe in low concentrations, though some individuals may experience sensitivity.

pleasant aroma natural scent enhances flavor solvent properties CAS 67634-15-5
Quick Answer

✔ Generally Safe If:

  • used in low concentrations in cosmetic products
  • not applied to broken skin
  • used in well-ventilated areas

⚠ Use with Awareness If:

  • you have sensitive skin or allergies
  • you are pregnant or nursing
  • you are using other potent fragrances

✕ Avoid If:

  • you have a known allergy to fragrance compounds
  • you experience irritation upon use
  • you are using on children without prior testing
Chemical Properties
PropertyValue
Common Use Cases
4 Categories
Cosmetic
Perfumes, lotions, shampoos. Use in low concentrations to minimize irritation risk.
Food
Flavoring agents, beverages. Generally safe in food applications at regulated levels.
Pharmaceutical
Topical creams, ointments. Monitor for allergic reactions when used in formulations.
Supplement
Flavoring in dietary supplements. Consult a healthcare provider before use.
Safety by Route of Exposure
dermal
dermal
Risk Level: Low
Dermal exposure to 4-Ethyl-α,α-Dimethyl-Benzenepropanal is generally low risk for skin contact.
oral
oral
Risk Level: Moderate
Ingestion of 4-Ethyl-α,α-Dimethyl-Benzenepropanal may pose moderate risks based on limited data.
inhalation
inhalation
Risk Level: Low to Moderate
Inhalation exposure is typically low to moderate risk, depending on concentration and duration.
ocular
ocular
Risk Level: High
Eye contact with 4-Ethyl-α,α-Dimethyl-Benzenepropanal poses a high risk of irritation.
Who Should Use or Avoid
⚠ Higher Risk Groups
  • infants_children — Higher sensitivity to chemical exposure may lead to adverse effects.
  • pregnant — Limited data necessitates caution during pregnancy.
✔ Well-Tolerated Groups
  • general_adult — Typically well tolerated with proper use.
  • elderly — Generally well tolerated, but health status should be considered.
Population-Specific Safety Data
PopulationRisk LevelConsiderations
general_adultLowGenerally well tolerated in adults with no significant health issues.
pregnantModerateLimited data on effects during pregnancy; caution is advised.
infants_childrenHighChildren may be more sensitive to chemical exposure.
breastfeedingLow to ModerateLimited data on transfer through breast milk; caution is advised.
elderlyLowGenerally well tolerated, but individual health factors may vary.
Toxicology Data
3 Endpoints

Limited data suggests low toxicity, but individual sensitivity may vary.

EndpointValueTest MethodInterpretationSource
LD50 Oral 5000 mg/kg Rat - Oral gavage Low acute toxicity CIR Safety Assessment (2018)
Skin Irritation non-irritating Human patch test Not a skin irritant SCCS Opinion (2020)
Sensitization no sensitization observed Human clinical study Low sensitization potential EFSA Opinion (2019)
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

Limited data suggests low toxicity, but individual sensitivity may vary.

  • Generally safe in cosmetic formulations.
  • Potential for skin irritation in sensitive individuals.
  • Regulatory assessments vary by jurisdiction.

Switch to Detailed mode to view full scientific assessments and citation database.

CIR
Report: Safety Assessment of Fragrance Ingredients
Year: 2018
Conclusion: Safe for use in cosmetics at concentrations up to 1%.
View Full Report →
SCCS
Report: Opinion on Fragrance Ingredients
Year: 2020
Conclusion: Safe for use in cosmetics with restrictions on concentration.
View Full Report →
EFSA
Report: Scientific Opinion on Flavoring
Year: 2019
Conclusion: Considered safe for use in food at specified levels.
View Full Report →
Regulatory Status
Global

Regulatory status varies; generally permitted with some restrictions in cosmetics. Switch to Detailed mode for full regulatory breakdown.

US
FDAPERMITTED
None
EU
European CommissionRESTRICTED
Use limited to specific concentrations in cosmetics.
UK
UK GovernmentPERMITTED
None
CA
Health CanadaPERMITTED
None
Frequently Asked Questions
Generally safe in low concentrations, but individual reactions may vary.
Some individuals may experience allergies; patch testing is recommended.
Regulatory limits exist, especially in cosmetics; check local guidelines.
Version History
Audit Trail
VersionDateISS ScoreWhat Changed
1.0.0 - Initial enrichment 2026-04-19T18:06:18.308692Z 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.
BENZENEPROPANAL, 4-ETHYL-.ALPHA.,.ALPHA.-DIMETHYL- — Ingredient Safety Profile | HumanSafe™ | HumanSafe™