CAS 29965-34-2 appears in our catalog under these names: Poly(4-styrenesulfonic acid) ammonium solution, Ammonium p-styrenesulfonate homopolymer, Mw ~200,000, 30 wt. % in H2O,RG, Poly(4-styrenesulfonic acid) ammonium sa. Offered by: Biosynth, Chemat, Sigma-Aldrich. Available pack sizes: 1000g, 500g, 5000g, 10000g, 25g, 100g, 250G.