Methacrylic acid

Methacrylic acid is an organic compound with the molecular formula C4H6O2.

Formula
C4H6O2
Molar mass
86.09 g/mol
Also known as
2-methylprop-2-enoic acid, 2-Methylacrylic acid, Methylacrylic acid, 2-Propenoic acid, 2-methyl-, 2-Methylpropenoic acid, 2-Methyl-2-propenoic acid

Overview

Methacrylic acid is an organic compound with the molecular formula C4H6O2.

Identifiers

Formula
C4H6O2
Molar mass
86.09 g/mol
Also known as
2-methylprop-2-enoic acid, 2-Methylacrylic acid, Methylacrylic acid, 2-Propenoic acid, 2-methyl-, 2-Methylpropenoic acid, 2-Methyl-2-propenoic acid
Chemical identifiers
SMILES
CC(=C)C(=O)O
InChI
InChI=1S/C4H6O2/c1-3(2)4(5)6/h1H2,2H3,(H,5,6)
PubChem CID
4093

Properties

Melting Point
16 °C
Boiling Point
163 °C at 760 mm Hg
Relative density (water = 1)
Relative density (water = 1): 1.02
Water solubility
In water solubility, 89 g/L at 20 °C

Related compounds

  • Carboxylic acids

    Methacrylic acid is an organic compound with the molecular formula C4H6O2.

  • Alkenes

    Methacrylic acid is an organic compound with the molecular formula C4H6O2.

References

  1. PubChem Compound Summary: Methacrylic acid (CID 4093)National Center for Biotechnology Information · PubChem

    Identity, molecular formula, molecular weight and aliases retrieved via PUG REST on 2026-09-08.

  2. Hazardous Substances Data Bank (HSDB): Methacrylic acid — melting pointHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/4093#section=Melting-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: O'Neil, M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Whitehouse Station, NJ: Merck and Co., Inc., 2006., p. 1026

  3. Hazardous Substances Data Bank (HSDB): Methacrylic acid — boiling pointHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/4093#section=Boiling-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: O'Neil, M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Whitehouse Station, NJ: Merck and Co., Inc., 2006., p. 1026

  4. ILO-WHO International Chemical Safety Cards (ICSCs): Methacrylic acid — densityILO-WHO International Chemical Safety Cards (ICSCs)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/4093#section=Density. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred.

  5. Hazardous Substances Data Bank (HSDB): Methacrylic acid — solubilityHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/4093#section=Solubility. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Riddick, J.A., W.B. Bunger, Sakano T.K. Techniques of Chemistry 4th ed., Volume II. Organic Solvents. New York, NY: John Wiley and Sons., 1985., p. 378