| 2831.10 | | Of sodium: | | | | |
| 2831.10.10 | 00 | Sodium formaldehyde sulfoxylate | kg | Free | | 35% |
| 2832 | | Sulfites; thiosulfates: | | | | |
| 2832.10.00 | 00 | Sodium sulfites | kg | 1.5% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 4.5% |
| 2832.20.00 | 00 | Other sulfites | kg | 3.1% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 25% |
| 2832.30 | | Thiosulfates: | | | | |
| 2832.30.10 | 00 | Sodium thiosulfate | kg | 1.5% | Free (A*,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 4.5% |
| 2833 | | Sulfates; alums; peroxosulfates (persulfates): | | | | |
| 2833.11 | | Disodium sulfate: | | | | |
| 2833.11 | | Sodium sulfates: | | | | |
| 2833.21.00 | 00 | Other sulfates: | | | | |
| 2833.21.00 | 00 | Of magnesium | kg | 3.7% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 20% |
| 2833.22.00 | 00 | Of aluminum | kg | Free | | 10% |
| 2833.24.00 | 00 | Of nickel | kg | 3.2% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 25% |
| 2833.25.00 | 00 | Of copper | kg Cu kg | 1.4% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 5% |
| 2833.27.00 | 00 | Of barium | kg | 0.6% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 4.2% |
| 2833.29.10 | 00 | Of cobalt | kg | 1.4% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 6.5% |
| 2833.29.20 | 00 | Of iron | kg | Free | | Free |
| 2833.29.30 | 00 | Of vanadium | kg V kg | 5.5% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P) 2.8% (SG) | 40% |
| 2833.29.40 | 00 | Of chromium | kg | 3.7% | Free (A,AU,BH, CA,CL,E, IL,J,JO, MA,MX,P,SG) | 25% |
| 2833.29.45 | 00 | Of zinc | kg | 1.6% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 8% |
| 2833.40 | | Peroxosulfates (persulfates): | | | | |
| 2833.40.20 | 00 | Of sodium | kg | 3.7% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 25% |
| 2834.10.10 | 00 | Of sodium | kg | 5.5% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX, P,SG) | 54% |
| 2834.21.00 | 00 | Of potassium | t | Free | | Free |
