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Moumoujus

TRIMETHYL HYDROXYPENTYL ISOBUTYRATE.

Questionable CAS 25265-77-4 / PLASTICISER

Trimethyl Hydroxypentyl Isobutyrate serves primarily as a cosmetic plasticizer, enhancing the texture and flexibility of formulations. It contributes to a smoother feel and improved application properties in various cosmetic products.

Summary

Plasticizer

Science

Mechanism of Action

Within cosmetic formulations, Trimethyl Hydroxypentyl Isobutyrate acts as a plasticizer. This mechanism involves softening brittle components, thereby improving their workability, smoothness, and overall product integrity.

Research

Clinical Evidence

Insufficient-data confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Specific optimal pH range for Trimethyl Hydroxypentyl Isobutyrate has not been identified. However, a structurally related compound, Trimethyl Pentanyl Diisobutyrate, exhibits stability in both neutral and acidic environments. Its primary solubility is in oil, with an estimated water solubility of 321.5 mg/L at 25 °C, or approximately 2 g/100ml.

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Low

This ingredient is registered within the FDA's Global Substance Registration System (GSRS). It has an EPA Safer Choice 'Yellow triangle' classification, indicating it meets criteria for its functional class but possesses hazard profile issues, suggesting room for safer chemical alternatives. It is classified under H320 for causing eye irritation and H402 for being harmful to aquatic life. Animal studies showed it to be a minor skin irritant in guinea pigs and a minor eye irritant in rabbits, but confirmed it is not a skin sensitizer. Acute toxicity data includes an oral LD50 of 3200 mg/kg in rats and a dermal LD50 of >20 ml/kg in guinea pigs. No specific CIR report or SCCS opinion is currently available.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Questionable

Trimethyl Hydroxypentyl Isobutyrate functions as a valuable formulation plasticizer, yet its classification as a minor irritant and noted environmental concerns warrant careful consideration in precision skincare applications.

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