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ACETALDEHYDE DIETHYL ACETAL

CAS 105-57-7
35

Safety score · 0–100

Caution

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

Also called 1,1-diethoxyethane, this compound is classified as a flammable liquid with multiple hazard codes including H225 (highly flammable), H318 (serious eye damage), and H317 (skin sensitization), rated Danger.

Acetaldehyde diethyl acetal (1,1-diethoxyethane, CAS 105-57-7) is an acetal of acetaldehyde with a pleasant fruity-pineapple odor used as a fragrance and flavoring. PubChem safety score is 35. Its classification under CLP includes H225 (highly flammable), H315 (skin irritation), H319 (serious eye irritation), H320 (eye irritation), H335 (respiratory irritation), and H336 (drowsiness), requiring Danger signal word. While not specifically prohibited in EU cosmetic annexes, the multiple hazard classifications and signal word limit its suitability for broad cosmetic use.

Skin benefits

  • Pleasant fruity-pineapple fragrance

Known concerns

  • Multiple CLP hazard classifications: H225, H315, H318, H319, H320, H335, H336
  • Signal word: Danger
  • Highly flammable
  • Serious eye damage and respiratory irritation hazard
  • Limited suitability for leave-on cosmetics due to hazard profile

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.