Regulatory Status
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Safety Data
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Expert Verdict
Michael acceptor structural alert — the maleate group is electrophilic and can react with skin proteins, raising sensitization risk. If used only as a copolymer building block with negligible free monomer residual, risk is mitigated. Free monomer levels must be controlled and documented. Standalone use requires patch testing and LLNA data.
Regulatory Flags
Frequently Asked Questions
Is Butyl Maleate safe in cosmetics?
Michael acceptor structural alert — the maleate group is electrophilic and can react with skin proteins, raising sensitization risk. If used only as a copolymer building block with negligible free monomer residual, risk is mitigated. Free monomer levels must be controlled and documented. Standalone use requires patch testing and LLNA data. The EU classifies Butyl Maleate as "permitted". Safety rating: MODERATE.
Is Butyl Maleate allowed in the EU?
Butyl Maleate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Butyl Maleate do in cosmetics?
Butyl Maleate functions as: Plasticizer, film former, monomer in copolymer synthesis. It is classified as a cosmetic ingredient in our database. CAS number: 925-21-3 (mono-n-butyl maleate).
What is the Margin of Safety for Butyl Maleate?
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.
Compliance Tools
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Related Ingredients
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