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ACETOPHENONE ETHYLENEGLYCOL CYCLIC ACETAL.

Questionable CAS 4362-22-5 / PERFUMING

ACETOPHENONE ETHYLENEGLYCOL CYCLIC ACETAL functions primarily as a fragrance or masking agent, employed to impart a pleasant aroma or neutralize undesirable odors within cosmetic formulations.

Fragrance Masking

Science

This ingredient primarily operates by contributing a distinct scent to product formulations, thus enhancing the user experience, or by effectively concealing the inherent, often less appealing, odors of other raw materials present in the cosmetic blend.


Research

Insufficient-data confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

The Formula

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

As a cyclic acetal, this compound demonstrates robust stability when exposed to nucleophiles and alkaline environments. However, it is highly susceptible to hydrolysis and subsequent deprotection under acidic conditions or in the presence of aqueous solvents. Strong oxidizing agents are also noted to induce cleavage.

Conflicts

  • Strong acids
  • Strong oxidizing agents

Safety

CIR Status
Not reviewed
Sensitization risk Unknown

Direct safety assessments by the Cosmetic Ingredient Review (CIR) or FDA are not available for ACETOPHENONE ETHYLENEGLYCOL CYCLIC ACETAL. A significant concern arises from Acetophenone (CAS No. 98-86-2), a structurally related compound, which received a recommendation for classification as 'Reprotoxic of Category 1B (H360FD)' by ECHA's RAC in March 2025. Such a classification typically restricts its use in EU cosmetic products. While the EU cosmetics industry is advocating for its safe use as a constituent in Natural Complex Substances (NCS) at concentrations up to 100 ppm, the potential reproductive toxicity of the parent compound necessitates a cautious approach when considering this acetal derivative.


Your Skin

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

Our Assessment

Questionable

While serving as a cosmetic fragrance and masking agent, the absence of specific safety data and concerns regarding the reprotoxic classification of a related parent compound classify this ingredient as questionable for use in precision skincare.


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