| 2844.50.00 | 00 | Spent (irradiated) fuel elements (cartridges) of nuclear reactors | kg | Free |  | Free | 
| 2845 |  | Isotopes other than those of heading 2844; com- pounds, inorganic or organic, of such isotopes, whether or not chemically defined: |  |  |  |  | 
| 2845.10.00 | 00 | Heavy water (Deuterium oxide) | kg | Free |  | 25% | 
| 2845.90.00 | 00 | Other | kg | Free |  | 25% | 
| 2846 |  | Compounds, inorganic or organic, of rare-earth metals, of yttrium or of scandium, or of mixtures of these metals: |  |  |  |  | 
| 2846.10.00 | 00 | Cerium compounds | kg | 5.5% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX, P,SG) | 35% | 
| 2846.90 |  | Other: |  |  |  |  | 
| 2846.90.20 |  | Mixtures of rare-earth oxides or of rare-earth chlorides |  | Free |  | 25% | 
| 2846.90.20 | 10 | Rare-earth oxides except cerium oxide | kg |  |  |  | 
| 2846.90.20 | 50 | Other | kg |  |  |  | 
| 2846.90.40 | 00 | Other: |  |  |  |  | 
| 2846.90.40 | 00 | Yttrium bearing materials and compounds containing by weight more than 19 percent but less than 85 percent yttrium oxide equivalent | kg | Free |  | 25% | 
| 2846.90.80 | 00 | Other | kg | 3.7% | Free (A,AU,BH, CA,CL,E,IL,J,JO, K,MA,MX,P,SG) | 25% | 
| 2847.00.00 | 00 | Hydrogen peroxide, whether or not solidified with urea | kg | 3.7% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 25% | 
| 2848.00 |  | Phosphides, whether or not chemically defined, excluding ferrophosphorus: |  |  |  |  | 
| 2848.00.10 | 00 | Of copper (phosphor copper), containing more than 15 percent by weight of phosphorus | kg | 2.6% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 32.5% | 
| 2848.00.90 | 00 | Of other metals or of nonmetals | kg | Free |  | 25% | 
| 2849 |  | Carbides, whether or not chemically defined: |  |  |  |  | 
| 2849.10.00 | 00 | Of calcium | kg | 1.8% | Free (A*,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 10% | 
| 2849.20 |  | Of silicon: |  |  |  |  | 
| 2849.20.10 | 00 | Crude | kg | Free |  | Free | 
| 2849.20.20 | 00 | In grains, or ground, pulverized or refined | kg | 0.5% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 1.6% | 
| 2849.90 |  | Other: |  |  |  |  | 
| 2849.90.10 | 00 | Of boron | kg | 3.7% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 25% | 
| 2849.90.20 | 00 | Of chromium | kg | 4.2% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 25% |