abietic acid

noun Chemistry.

1. a yellow, crystalline, water-insoluble acid, C20H30O2, obtained from the resin of a species of pine: used chiefly in driers, varnishes, and soaps.

noun

1. a yellowish powder occurring naturally as a constituent of rosin and used in lacquers, varnishes, and soap. Formula: C 19 H 29 COOH; melting pt: 173°C