73070-31-2 EINECS 277-270-3 Polyphosphoric acids, Me esters, ammonium salts, reaction products with cyanoguanidine and formaldehyde Polyphosphoric acids, Me esters, ammonium salts, reaction productswith cyanoguanidine and formaldehyde Polyphosphoric acids, methyl esters, ammonium salts, cyanoguanidine, formaldehyde reaction product