Acrylic Acid

Cas Number


Other Names

Acrylic acid

Acroleic acid

Ethylenecarboxylic acid

Propene acid

Propenoic acid

Vinylformic acid

The formula



Acrylic acid (IUPAC: propenoic acid) is an organic compound with the formula CH2=CHCOOH. It is the simplest unsaturated carboxylic acid, consisting of a vinyl group connected directly to a carboxylic acid terminus. This colorless liquid has a characteristic acrid or tart smell.

Physical and Chemical Properties
Physical state and appearance Liquid
Odor Acrid (Strong.)
Molecular Weight 72.06 g/mole
Color Colorless
Boiling Point 141°C (285.8°F)
Critical Temperature 342°C (647.6°F)
Melting Point 14°C (57.2°F)
Specific Gravity 1.05 (Water = 1)
Vapor Pressure 0.5 kPa (@ 20°C)
Vapor Density 2.5 (Air = 1)
Odor Threshold 0.092 ppm
Water/Oil Dist. Coeff The product is more soluble in oil; log(oil/water) = 0.4
Dispersion Properties Partially dispersed in methanol, diethyl ether. See solubility in water
Solubility Soluble in cold water. Very slightly soluble in acetone. Insoluble in diethyl ether.
Exact purity percentage wt% 99.5 min
Water, wt% 0.3 max
Acrolein, wt ppm 2.0 max
Furfural, wt ppm 2.0 max
Ihibitor (MEHQ), wt ppm 180 ~ 220

1. Acrylic acid is used primarily as a starting material in the production of acrylic esters; as a monomer for polyacrylic acid and salts, as a comonomer with acrylamide for polymers used as flocculants, with ethylene for ion exchange resin polymers, with methyl ester for polymers

2. Acrylic acid is used in the field of application of plastics, paper manufacture and coating, exterior house paints for wood and masonry, coatings for compressed board and related building materials, flocculation of mineral ore fines and waste water, and treatment of sewage, printing inks, interior wall paints, floor polishes, floor and wall coverings, industrial primers, textile sizing, treatment and finishing, leather impregnation and finishing, masonry sealers, lubricating and fuel oil additives, lacquers for automotive, appliance and furniture finishes, pharmaceutical binders and hot metal coatings