prop2enoate

Prop-2-enoate refers to the conjugate base of prop-2-enoic acid (commonly known as acrylic acid) and, more broadly, to the acrylate moiety found in acrylate esters and salts. The anion has the formula C3H3O2− and features a vinyl carboxylate group, CH2=CH-COO−, with charge delocalization over the two oxygens through resonance. In practice, prop-2-enoate appears as salts such as sodium prop-2-enoate and potassium prop-2-enoate, and as the carboxylate part of esters such as alkyl prop-2-enoates (acrylates).

Prop-2-enoate is a central unit in polymer chemistry. Acrylic and acrylate monomers are widely used for radical polymerization to form polyacrylates, which serve in coatings, adhesives, sealants, and superabsorbent polymers. The acrylate family includes many commercially important esters such as methyl, ethyl, and butyl acrylates, derived from prop-2-enoic acid.

Preparation and uses: Prop-2-enoate salts are produced by neutralizing acrylic acid with bases; acrylate esters arise from esterification of acrylic acid with alcohols under acidic catalysis. In polymer applications, the vinyl group enables polymerization, while the carboxylate or ester functionality influences properties such as polarity, hydrophilicity, and cross-linking behavior.

Safety and handling: Acrylic compounds and their salts/esters are generally corrosive and can irritate skin and eyes; appropriate protective equipment and ventilation are required. Storage often employs polymerization inhibitors to prevent unwanted polymer growth.