Butyl Methacrylate
molecular structure · PubChem
AKA: 97-88-1, N-Butyl methacrylate, Butyl 2-methylprop-2-enoate, Butylmethacrylate, Butylmethacrylaat, Butyl 2-methacrylate, Butil metacrilato, 2-Methyl-butylacrylat, 2-Methyl-butylacrylaat
Synthetic
Occlusive
Not Clean
Based on available data, the CIR Expert Panel concluded that ... Butyl Methacrylate is safe as used in nail enhancement products when skin contact is avoided. Products containing these ingredients should be accompanied with directions to avoid skin contact, because of the sensitizing potential of Methacrylates.
Solubility Insoluble (NTP, 1992)
Formula
C8H14O2
Mol. Weight
142.20
CAS #
97-88-1
Form
Powder
State
Butyl, decyl, cetyl, eicosyl methacrylate appears as a colorless liquid with a mild odor. Less dense than water and insoluble in water. Hence floats on water. (USCG, 1999)
Functions
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Viscosity Controlling
Antimicrobial
Creates protective layer
Provides scent
Controls product thickness
Traditional Use
Synthetic polymer monomer developed in the 20th century for use in cosmetic film-formers and nail products. Created to provide improved adhesion and durability in cosmetic formulations.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Caution
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR