Sodium Methacrylate/Styrene Copolymer

INCI: SODIUM METHACRYLATE/STYRENE COPOLYMER

CAS Number
33970-45-5
Function
Opacifying (reduces transparency/translucency of cosmetic products)
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted for cosmetic use; no specific CIR monograph dedicated to this exact copolymer

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
negligible
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Monitor residual styrene monomer levels (styrene is classified as a possible carcinogen by IARC Group 2A); inhalation of aerosolized forms should be avoided

โš ๏ธ
Concern Level: Moderate

Frequently Asked Questions

Is Sodium Methacrylate/Styrene Copolymer safe in cosmetics?

Monitor residual styrene monomer levels (styrene is classified as a possible carcinogen by IARC Group 2A); inhalation of aerosolized forms should be avoided The EU classifies Sodium Methacrylate/Styrene Copolymer as "permitted". Safety rating: GOOD.

Is Sodium Methacrylate/Styrene Copolymer allowed in the EU?

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

What does Sodium Methacrylate/Styrene Copolymer do in cosmetics?

Sodium Methacrylate/Styrene Copolymer functions as: Opacifying (reduces transparency/translucency of cosmetic products). It is classified as a cosmetic ingredient in our database. CAS number: 33970-45-5.

What is the Margin of Safety for Sodium Methacrylate/Styrene Copolymer?

not established 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 Sodium Methacrylate/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 Sodium Methacrylate/Styrene Copolymer in your formulation.