CAS 54193-36-1 appears in our catalog under these names: Sodium polymethacrylate Mw 4000-6000,40 wt. % in H2O, POLY(METHACRYLIC ACID, SODIUM SALT), 30&, Methacrylic acid homopolymer sodium salt, Mw 4000-6000,40 wt. % in H2O, Mw 4000-6000,40 wt. % in H2O. Offered by: Ambeed, Sigma-Aldrich, Chemat. Available pack sizes: 500g, 1000g, 1L.