Synonyms: Benzenesulfonic acid, hydroxy-, monosodium salt, polymer with formaldehyde and urea;Benzenesulfonic acid, hydroxy-, monosodium salt, polymer with formaldehyde and urea benzenesulfonic acid, hydroxy-, monosodium salt, polymer with formaldehyde and benzenesulfonic acid, hydroxy-, monosodium salt,polymer with formaldehyde and urea