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FORMALDEHYDE CYCLODECYL ETHYL ACETAL.

Avoid CAS 58567-11-6 / PERFUMING

Formaldehyde Cyclodecyl Ethyl Acetal is a synthetic fragrance compound primarily employed to impart a diffuse woody scent with ambergris notes to cosmetic formulations and the skin. Critically, it functions as a formaldehyde-releasing agent, undergoing hydrolysis to yield formaldehyde, cyclododecanol, and ethanol over time.

perfuming

Science

This ingredient functions by volatizing to deliver its characteristic scent profile. Its mechanism also involves a gradual hydrolysis within the product, particularly in aqueous environments. This chemical breakdown releases free formaldehyde, a substance of significant toxicological concern, alongside cyclododecanol and ethanol.


Research

Insufficient-data confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

The Formula

Solubility
Oil
Optimal pH ≤4
0 7 14

Stability

The ingredient demonstrates optimal stability at approximately pH 4, exhibiting an estimated half-life of 299 hours at 25°C. Its stability decreases at higher pH values, with half-lives of approximately 259 hours at pH 7 and 243 hours at pH 9, indicating a continuous release of formaldehyde over time. Manufacturing processes require precise neutralization following acid catalysis to prevent premature decomposition.


Safety

CIR Status
Not reviewed
Sensitization risk Moderate

Formaldehyde Cyclodecyl Ethyl Acetal is a formaldehyde-releasing compound, a class of ingredients with known regulatory scrutiny. While the CIR has assessed formaldehyde and some releasers, this specific ingredient lacks an individual CIR or SCCS safety assessment. The US EPA has concluded that formaldehyde presents an unreasonable risk to human health. The Research Institute for Fragrance Materials (RIFM) has conducted and published a peer-reviewed safety assessment, concluding it is safe under their specified use conditions, which informs IFRA's safe use standards to mitigate sensitization potential in consumer products.


Your Skin

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

Our Assessment

Avoid

Given its identity as a formaldehyde-releasing fragrance ingredient with documented potential for skin sensitization and irritation, this compound is not aligned with Moumoujus's commitment to precision and skin health.


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