2921.45.20 | 00 | 3-Amino-2,7-naphthalenedisulfonic acid; 4-Amino-1-naphthalenesulfonic acid, sodium salt; 5-Amino-1-naphthalenesulfonic acid (Laurent's acid); 8-Amino-2-naphthalenesulfonic acid and its salts; 7-Amino-1,3,6-naphthalenetrisulfonic acid; 8-Anilino-1-naphthalenesulfonic acid (Phenyl Peri acid) and its salts; and N-Ethyl-1-naphthylamine | kg | 5.8% | Free (A+,AU,BH, CA,CL,D,E,IL,J, JO,L,MA,MX, P,SG) | 15.4¢/kg + 39.5% |