P 0615 (OTTO) Poly(acrylic acid) solution, average Mw ~2,000, 50 wt. % in H2O, electronic grade Cas 9003-01-4 - used in disposable diapers and in ion exchange resins. It is also used to study solute diffusion in polyvinyl alcohol/polyacrylic acid copolymer hydrogel. It is also employed as a thickening, suspending, emulsifying and dispersing agent in pharmaceuticals,