B 2291a (OTTO) Butyl acrylate, 99% Cas 141-32-2 - used in the production of homopolymers and co-polymers like acrylic acid and its salts, esters, amides, methacrylates, acrylonitrile, maleates, vinyl acetate, vinyl chloride, vinylidene chloride, styrene, butadiene and unsaturated polyesters.