Acrylates/Steareth-20 Methacrylate Copolymer

INCI: ACRYLATES/STEARETH-20 METHACRYLATE COPOLYMER

CAS Number
676168-27-7
Function
rheology modifier, thickener, emulsion stabilizer
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes No US federal restriction. Used in cleansers and conditioning products.

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

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
negligible
Sensitization
none

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

HASE-type associative thickener combining carbomer-like alkali-swelling with hydrophobic steareth-20 chain association, delivering synergistic thickening in surfactant systems. Requires neutralization; performance heavily dependent on surfactant type and concentration. Anionic character means electrolyte sensitivity similar to carbomers, partially offset by associative mechanism. Subject to EU REACH SPM review for crosslinked grades.

โš ๏ธ
Concern Level: Low

Regulatory Flags

hase associative-thickener requires-neutralization anionic surfactant-synergy-required electrolyte-sensitive acrylate-polymer aculyn-33 eu-spm-review-pending

Frequently Asked Questions

Is Acrylates/Steareth-20 Methacrylate Copolymer safe in cosmetics?

HASE-type associative thickener combining carbomer-like alkali-swelling with hydrophobic steareth-20 chain association, delivering synergistic thickening in surfactant systems. Requires neutralization; performance heavily dependent on surfactant type and concentration. Anionic character means electrolyte sensitivity similar to carbomers, partially offset by associative mechanism. Subject to EU REACH SPM review for crosslinked grades. The EU classifies Acrylates/Steareth-20 Methacrylate Copolymer as "permitted". Safety rating: GOOD.

Is Acrylates/Steareth-20 Methacrylate Copolymer allowed in the EU?

Acrylates/Steareth-20 Methacrylate Copolymer EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Acrylates/Steareth-20 Methacrylate Copolymer do in cosmetics?

Acrylates/Steareth-20 Methacrylate Copolymer functions as: rheology modifier, thickener, emulsion stabilizer. It is classified as a cosmetic ingredient in our database. CAS number: 676168-27-7.

What is the Margin of Safety for Acrylates/Steareth-20 Methacrylate 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 Acrylates/Steareth-20 Methacrylate 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 Acrylates/Steareth-20 Methacrylate Copolymer in your formulation.