Butyl Methacrylate
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
Ingredient
Ingredient Facts
Butyl methacrylate
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
Ingredient · Film Forming · EWG: 6
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)
See origin →
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
EWG
6
CIR
Safe as used
Pregnancy
Caution
CIR Safety Findings
ewg-6
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR