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ETHYLENE/MALEIC ANHYDRIDE/PROPYLENE COPOLYMER.

Insufficient Data CAS 31069-12-2 / VISCOSITY CONTROLLING

This copolymer functions primarily as a film-forming agent and a viscosity modifier in skincare formulations. It helps to create a delicate, protective barrier on the skin, contributing to improved texture and enhanced product stability.

Summary

Film-forming Viscosity controlling Skin conditioning Emollient Stabilizing agent

Science

Mechanism of Action

ETHYLENE/MALEIC ANHYDRIDE/PROPYLENE COPOLYMER operates by forming a subtle, protective film on the skin's surface. This polymeric barrier is instrumental in reducing transepidermal water loss, thereby preventing moisture evaporation and offering protection from minor external irritants. The film-forming attribute also contributes to a smoother skin texture and enhances the structural integrity and stability of cosmetic preparations. The maleic anhydride component integrated into the copolymer structure confers increased polarity, further augmenting its film-forming and adhesive properties.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 7 – 7
0 7 14

Stability

Ethylene/Maleic Anhydride Copolymers generally exhibit water-solubility. Studies on hydrolyzed forms indicate optimal stability around a neutral pH of 7.0. However, these hydrolyzed forms can be pH-sensitive, with accelerated release of encapsulated substances occurring in weakly acidic (pH 5.5) or weakly alkaline (pH 8.5) conditions due to particle agglomeration and instability. The maleic anhydride groups are susceptible to pH-dependent hydrolysis. The anhydride form is soluble in organic solvents, whereas its hydrolyzed acid form demonstrates higher water-solubility.

Safety

Safety Profile

CIR Status
Insufficient data
Sensitization risk Unknown

There is no specific Cosmetic Ingredient Review (CIR) or SCCS assessment available for ETHYLENE/MALEIC ANHYDRIDE/PROPYLENE COPOLYMER. The CIR Expert Panel previously concluded that data were insufficient to determine the safety of 'Trimellitic Anhydride Copolymers' (a broader category that can include maleic anhydride as a monomer), citing a lack of fundamental chemical data and noting the potential for anhydride monomers to act as respiratory sensory irritants. For the related ingredient 'Ethylene-maleic anhydride copolymer' (CAS 9006-26-2), a Material Safety Data Sheet (MSDS) classifies it as a Category 2 skin irritant (H315) and a Category 2 eye irritant (H319). An FDA Food Contact Substance Notification for this related copolymer specifies that maleic anhydride incorporation should not exceed 6% by weight when used as a component of an aqueous dispersion with polypropylene.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Insufficient Data

While ETHYLENE/MALEIC ANHYDRIDE/PROPYLENE COPOLYMER offers valuable film-forming and viscosity-controlling benefits for skin hydration and formulation stability, comprehensive safety data specifically for this exact ingredient remains insufficient, necessitating cautious formulation practices and consideration of irritancy profiles observed in closely related compounds.

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