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Monomers and industrial chemicals

Acrylic acid vs methacrylic acid

Acrylic acid (C3H4O2, CAS 79-10-7) and methacrylic acid (C4H6O2, CAS 79-41-4) are both listed under thickeners and film formers.

Acrylic acid has a molar mass of 72.06 g/mol, methacrylic acid 86.09 g/mol.

Measured boiling points are 142 °C for acrylic acid and 163 °C for methacrylic acid.

Both carry the GHS signal word Danger.

On CompoundList, 382 suppliers list acrylic acid and 205 suppliers list methacrylic acid.

Data last updated 7 October 2026

Acrylic acid and methacrylic acid compared side by side
Acrylic acid chemical structure, C3H4O2, CAS 79-10-7
Acrylic acid
Methacrylic acid chemical structure, C4H6O2, CAS 79-41-4
Methacrylic acid
Identity
Name in our databaseAcrylic acidMethacrylic acid
CAS number79-10-779-41-4
Molecular formulaC3H4O2C4H6O2
Molar mass72.06 g/mol86.09 g/mol
IUPAC nameprop-2-enoic acid2-methylprop-2-enoic acid
EC number201-177-9201-204-4
Physical properties
AppearanceAcrid liquidClear colorless liquid or colorless crystals
Melting point13.6 °C16 °C
Boiling point142 °C163 °C
Density1.0511 g/cm³ at 20 °CRelative density (water = 1): 1.02
Flash point54 °C76 °C
SolubilityMiscible with water /1 × 10⁺⁶ mg/L/ at 25 °CIn water solubility, 89 g/L at 20 °C
LogP (octanol/water)Computed from the structure0.260.65
Safety (GHS)
Signal wordDangerDanger
Pictograms
GHS02: Flammable
GHS05: Corrosive
GHS07: Harmful or irritant
GHS09: Hazardous to the environment
GHS05: Corrosive
GHS07: Harmful or irritant
Hazard statements
  • H226 Flammable liquid and vapour.
  • H302 Harmful if swallowed.
  • H312 Harmful in contact with skin.
  • H314 Causes severe skin burns and eye damage.
  • H332 Harmful if inhaled.
  • and 1 more
  • H302 Harmful if swallowed.
  • H312 Harmful in contact with skin.
  • H314 Causes severe skin burns and eye damage.
UN numberUN 2218UN 2531
Uses and classification
Uses and functions
  • Emulsifiers
  • Thickeners
  • Binders and resins
  • Base resins and polymers
  • Metabolite
  • Binding
  • Thickeners
  • Film forming
  • Viscosity controlling
  • Adhesion/cohesion promoter
  • Binder
  • Film former
CategoryCosmetic ingredients › EmulsifiersPolymers and resins › Polymers and thermoplastics
HS code291611Acrylic acid and its salts291613Methacrylic acid and its salts
Market on CompoundList
Suppliers382 suppliers205 suppliers
Supplier countries48 countries, most in India, China, United States29 countries, most in United States, China, India
Price rangeOnly prices set by suppliers who manage their own profilePrice on requestPrice on request

Measured and computed values as shown on each chemical page, plus live listings on CompoundList. Details may have changed, please confirm them with the supplier. Safety data is a summary, not an SDS.

Acrylic acid
Methacrylic acid

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