| 2804.69.10 | 00 | Containing by weight less than 99.99 percent but not less than 99 percent of silicon | kg Si kg | 5.3% | Free (A*,AU,BH, CA,CL,E,IL,J,JO, MA,MX, P,SG) | 21% |
| 2811.22 | | Silicon dioxide: | | | | |
| 2811.22.10 | 00 | Synthetic silica gel | kg | 3.7% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 25% |
| 2826 | | Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts: | | | | |
| 2826.90.10 | 00 | Fluorosilicates of sodium or of potassium | kg | 4.1% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 62.5% |
| 2839 | | Silicates; commercial alkali metal silicates: | | | | |
| 2839.11.00 | 00 | Sodium metasilicates | kg | 1.1% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 3% |
| 2842 | | Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides: | | | | |
| 2842.10.00 | 00 | Double or complex silicates, including alumino- silicates whether or not chemically defined | kg | 3.7% | Free (A+,AU,BH, CA,CL,D,E,IL,J, JO,K,MA,MX, P,SG) | 25% |
| 2843.21.00 | 00 | Silver compounds: | | | | |
| 2843.21.00 | 00 | Silver nitrate | kg | 3.7% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 25% |
| 2844 | | Radioactive chemical elements and radioactive isotopes (including the fissile or fertile chemical elements and isotopes) and their compounds; mixtures and residues containing these products: | | | | |
| 2849.20 | | Of silicon: | | | | |
| 2850.00 | | Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 2849: | | | | |
| 2931.00.05 | 00 | Diphenyldichlorosilane; and Phenyltrichlorosilane | kg | Free | | 15.4¢/kg + 68.5% |
| 2931.00.70 | 00 | N,N'-Bis(trimethylsilyl)urea; 3-(Hydroxymethylphosphinyl)-1-propanoic acid, 2-hydroxyethyl ester; and 2-Phosphonobutane-1,2,4-tricarboxylic acid and its salts | kg | Free | | 25% |
| 2931.00.90 | 10 | Organo-silicon compounds | kg | | | |
| 2933.71.00 | 00 | 6-Hexanelactam (ε-Caprolactam) | kg | 6.5% | Free (A,AU,BH,CA, CL,E,IL,J,JO, MA,MX,P) 0.2¢/kg + 2.7% (SG) | 15.4¢/kg + 40% |
| 3702.32.01 | | Other, with silver halide emulsion | | 3.7% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 25% |
| 3703.10.30 | | Silver halide papers | | 3.7% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 30% |
| 3703.20.30 | | Silver halide papers | | 3.7% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 30% |
| 3703.90.30 | | Silver halide papers | | 3.7% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 30% |
| 3910.00.00 | 00 | Silicones in primary forms | kg | 3% | Free (A,AU,BH, CA,CL,E,IL,J,JO, K,MA,MX, P,SG) | 25% |
| 4005.10.00 | 00 | Compounded with carbon black or silica | kg | Free | | 20% |
| 4202.12.80 | 10 | Containing 85 percent or more by weight of silk or silk waste | No. kg | | | |
Harmonized Tariff Schedule of the United States inquiry: 3203Ã
