Styrene/MA Copolymer

INCI: STYRENE/MA COPOLYMER (MA = MALEIC ANHYDRIDE)

CAS Number
9011-13-6
Function
Film forming, viscosity controlling, opacifying
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted; included in CIR styrene copolymer safety assessment โ€” safe as used

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
high
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Maleic anhydride monomer is a skin/respiratory sensitizer and irritant โ€” residual levels must be verified. Styrene monomer (IARC 2A) residual control required

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Concern Level: Moderate

Regulatory Flags

potential-allergen

Frequently Asked Questions

Is Styrene/MA Copolymer safe in cosmetics?

Maleic anhydride monomer is a skin/respiratory sensitizer and irritant โ€” residual levels must be verified. Styrene monomer (IARC 2A) residual control required The EU classifies Styrene/MA Copolymer as "permitted". Safety rating: GOOD.

Is Styrene/MA Copolymer allowed in the EU?

Styrene/MA Copolymer EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Styrene/MA Copolymer do in cosmetics?

Styrene/MA Copolymer functions as: Film forming, viscosity controlling, opacifying. It is classified as a cosmetic ingredient in our database. CAS number: 9011-13-6.

What is the Margin of Safety for Styrene/MA Copolymer?

adequate The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

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