Synonyms: Lignosulfonic acid, calcium salt, polymer with cyanoguanidine, formaldehyde and sodium lignosulfonate;Ligninsulfonic acid, polymer with dicyandiamide and formaldehyde, calcium sodium salt;Ligninsulfonic acid,polymer with dicyandiamide and formaldehyde,calcium sodium salt;lignosulfonic acid, calcium salt, polymer with cyanoguanidine, formaldehyde and