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Ethyl Methacrylate
AKA “97-63-2, ethyl 2-methylprop-2-enoate, 2-Propenoic acid, 2-methyl-, ethyl ester, Ethyl 2-methylacrylate, Ethyl 2-methyl-2-propenoate, Rhoplex AC-33, Ethyl 2-methacrylate, METHACRYLIC ACID, ETHYL ESTER, RCRA waste number U118”
Ingredient
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Ingredient Facts
Ethyl methacrylate
AKA: 97-63-2, Ethyl 2-methylprop-2-enoate, 2-Propenoic acid, 2-methyl-, Ethyl ester, Ethyl 2-methylacrylate, Ethyl 2-methyl-2-propenoate, Rhoplex AC-33, Ethyl 2-methacrylate, METHACRYLIC ACID, ETHYL ESTER, RCRA waste number U118
Ingredient · Viscosity Controlling · EWG: 4
Synthetic
Not Clean
Based on the available data on the formulation of nail products containing Ethyl Methacrylate, the CIR Expert Panel concludes that this ingredient is safe as used when application is accompanied by directions to avoid skin contact because of the sensitizing potential of Ethyl Methacrylate.
Solubility 5 to 10 mg/mL at 68 °F (NTP, 1992)
Formula
C6H10O2
Mol. Weight
114.14
CAS #
97-63-2
Form
Powder
State
Ethyl methacrylate appears as a colorless moderately toxic liquid with an acrid odor. Flash point of 70 °F. Boiling point 278 °F. Vapors irritate the eyes and respiratory system. Less dense than water
See origin →
Functions
Viscosity Controlling
Controls Viscosity
UV Protection
Antioxidant Protection
Traditional Use
A synthetic monomer developed in the early 20th century for industrial polymer production. Adopted by cosmetics industry for use in nail lacquers and film-forming products to create flexible coatings.
Skin Types
●all-skin-types
Best For
General
EWG
4
CIR
Safe as used
Pregnancy
—
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
RIFM fragrance ingredient safety assessment, pentanedioic acid, 1,5-dimethyl ester, CAS Registry Number 1119-40-0.
Api AM, Belsito D, Botelho D, Browne D, Bruze M et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 2018
→
Final report of the Cosmetic Ingredient Review Expert Panel safety assessment of polymethyl methacrylate (PMMA), methyl methacrylate crosspolymer, and
Becker LC, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2011
→
Final report of the Cosmetic Ingredient Review Expert Panel safety assessment of polymethyl methacrylate (PMMA), methyl methacrylate crosspolymer, and
Becker LC, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2011
→
Final report of the Cosmetic Ingredient Review Expert Panel safety assessment of polymethyl methacrylate (PMMA), methyl methacrylate crosspolymer, and
Becker LC, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2011
→
Final report of the Cosmetic Ingredient Review Expert Panel safety assessment of polymethyl methacrylate (PMMA), methyl methacrylate crosspolymer, and
Becker LC, Bergfeld WF, Belsito DV, Hill RA, Klaassen CD et al.
International journal of toxicology, 2011
→
Amended Final Report on the Safety Assessment of Ethyl Methacrylate
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Final Report of the Cosmetic Ingredient Review Expert Panel Safety Assessment of Polymethyl Methacrylate (PMMA), Methyl Methacrylate Crosspolymer and Methyl Methacrylate/Glycol Dimethacrylate Crosspol
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Final Report on Ethyl Methacrylate
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Final Report on the Safety Assessment of 2-Methyl-5-Hydroxyethylaminophenol
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Final Report on the Safety Assessment of Ethyl Ester of PVM/MA Copolymer and Butyl Ester of PVM/MA Copolymer
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Final Report on the Safety Assessment of Methacrylic Acid
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
→
Report Terminated: Methyl Methacrylate
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
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2-Methyl-5-Hydroxyethylaminophenol
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Behenyl Methacrylate/Perfluorooctylethyl Methacrylate Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Butyl Acrylate/Hydroxyethyl Methacrylate Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Butyldimethicone Methacrylate/Methyl Methacrylate Crosspolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
C8-22 Alkyl Acrylates/Methacrylic Acid Crosspolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Ethoxyethyl Methacrylate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Ethyl Ester of PVM/MA Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Ethyl Methacrylate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Ethylhexyl Acrylate/Methyl Methacrylate Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Ethylhexyl Methacrylate/Methyl Methacrylate/VP Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Methacrylic Acid
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Methacrylic Acid/Styrene/VP Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Methyl Methacrylate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Methyl methacrylate crosspolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Methyl Methacrylate/Glycol Dimethacrylate Crosspolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Methyl Methacrylate/PEG/PPG-4/3 Methacrylate Crosspolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
PEG/PPG-5/2 Methacrylate/Methacrylic Acid Crosspolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Polymethyl Methacrylate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Potassium Ethyl Ester of PVM/MA Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Shea Butter Ethyl Esters
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Silybum marianum ethyl ester
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Stearyl Methacrylate/Perfluorooctylethyl Methacrylate Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Vinyl Caprolactam/VP/Dimethylaminoethyl Methacrylate Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
2-Methyl-1-Phenyl-2-Propanol
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
2-Methyl-5-Hydroxyethylaminophenol
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
C8-22 Alkyl Acrylates/Methacrylic Acid Crosspolymer
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Ethyl Ester of PVM/MA Copolymer
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Ethyl Methacrylate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Methacrylic Acid
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Methyl Methacrylate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Methyl methacrylate crosspolymer
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Methyl Methacrylate/Glycol Dimethacrylate Crosspolymer
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Polymethyl Methacrylate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Shea Butter Ethyl Esters
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Vinyl Caprolactam/PVP/Dimethylaminoethyl Methacrylate Copolymer
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Detection of fatty acid ethyl esters in skin surface lipids as biomarkers of ethanol consumption in alcoholics, social drinkers, light drinkers, and t
González-Illán F, Ojeda-Torres G, Díaz-Vázquez LM, Rosario O
Journal of analytical toxicology, 2011
→
2-Methyl-m-phenylenediamine
Health Canada
Health Canada Cosmetic Ingredient Hotlist
→
3-Imidazol-4-ylacrylic acid and its ethyl ester
Health Canada
Health Canada Cosmetic Ingredient Hotlist
→
Ethyl methacrylate
Health Canada
Health Canada Cosmetic Ingredient Hotlist
→
Methacrylic acid
Health Canada
Health Canada Cosmetic Ingredient Hotlist
→
Methyl methacrylate monomer
Health Canada
Health Canada Cosmetic Ingredient Hotlist
→
Synthesis of mixed esters of ascorbic acid using methyl esters of palm and soybean oils.
Hsieh HJ, Chen JW, Giridhar R, Wu WT
Preparative biochemistry & biotechnology, 2005
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Cytotoxicity study of homopolymers and copolymers of 2-hydroxyethyl methacrylate and some alkyl acrylates for potential use as temporary skin substitu
Prasitsilp M, Siriwittayakorn T, Molloy R, Suebsanit N, Siriwittayakorn P et al.
Journal of materials science. Materials in medicine, 2003
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Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR