Ammonium Acrylates/Methylstyrene/Styrene Copolymer

INCI: AMMONIUM ACRYLATES/METHYLSTYRENE/STYRENE COPOLYMER

CAS Number
Not assigned a single CAS (complex terpolymer)
Function
Film forming, viscosity controlling, binding
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status restricted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted; falls under the CIR safety assessment of acrylates copolymers โ€” safe as used when formulated to be non-irritating

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Nano form is restricted in the EU (Annex II/1725) as of Feb 2025 โ€” ensure your grade is non-nano and document this. Residual styrene monomer is a concern (IARC Group 2A possible carcinogen) โ€” ensure supplier provides residual monomer specifications.

โš ๏ธ
Concern Level: High

Frequently Asked Questions

Is Ammonium Acrylates/Methylstyrene/Styrene Copolymer safe in cosmetics?

Nano form is restricted in the EU (Annex II/1725) as of Feb 2025 โ€” ensure your grade is non-nano and document this. Residual styrene monomer is a concern (IARC Group 2A possible carcinogen) โ€” ensure supplier provides residual monomer specifications. The EU classifies Ammonium Acrylates/Methylstyrene/Styrene Copolymer as "restricted". Safety rating: GOOD.

Is Ammonium Acrylates/Methylstyrene/Styrene Copolymer allowed in the EU?

Ammonium Acrylates/Methylstyrene/Styrene Copolymer EU regulatory status: restricted. This is based on EU Regulation 1223/2009 and its amendments.

What does Ammonium Acrylates/Methylstyrene/Styrene Copolymer do in cosmetics?

Ammonium Acrylates/Methylstyrene/Styrene Copolymer functions as: Film forming, viscosity controlling, binding. It is classified as a cosmetic ingredient in our database. CAS number: Not assigned a single CAS (complex terpolymer).

What is the Margin of Safety for Ammonium Acrylates/Methylstyrene/Styrene 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.

๐Ÿ“ฑ

Is Ammonium Acrylates/Methylstyrene/Styrene Copolymer in Your Products?

Scan any product label with Piro โ€” our free ingredient scanner. Point your camera at the ingredients list and get instant safety scores for every ingredient.

Try Piro Free โ†’

Analyze Your Full Ingredient List

Paste any INCI list into the Decoder for instant safety analysis, or calculate the Margin of Safety for Ammonium Acrylates/Methylstyrene/Styrene Copolymer in your formulation.