Poly(acrylic acid, sodium salt) solution, average Mw ~1,200, 45 wt.% in H2O - with the chemical formula [−CH2−CH(CO2Na)−]n and broad application in consumer products.
P 0501 (OTTO) Poly(acrylic acid, sodium salt) solution, average Mw ~15,000, 35 wt.% in H2O Cas 9003-04-7 - used in ice packs to convert the water used as the cooling agent into a gel.