| 2830 | | Sulfides; polysulfides, whether or not chemically defined: | | | | |
| 2830.90 | | Other: | | | | |
| 2830.90.10 | 00 | Zinc sulfide, luminescent grade having a purity of 99.99 percent or more by weight | kg | Free | | 11% |
| 2830.90.15 | 00 | Other zinc sulfide | kg | 2.8% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 11% |
| 2830.90.90 | 00 | Other | kg | 3% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 25% |
| 2831.10.10 | 00 | Sodium formaldehyde sulfoxylate | kg | Free | | 35% |
| 2831.10.50 | 00 | Other | kg | 5.5% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P) 2.9% (SG) | 35% |
| 2831.90.00 | 00 | Other | kg | 5.5% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P) 2.9% (SG) | 35% |
| 2832.20.00 | 00 | Other sulfites | kg | 3.1% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 25% |
| 2832.30.50 | 00 | Other | kg | 3.1% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 4.5% |
| 2833 | | Sulfates; alums; peroxosulfates (persulfates): | | | | |
| 2833.11.50 | | Other | | 0.4% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 3.6% |
| 2833.11.50 | 10 | Anhydrous | t | | | |
| 2833.11.50 | 50 | Other | t | | | |
| 2833.19.00 | 00 | Other | kg | Free | | Free |
| 2833.21.00 | 00 | Other sulfates: | | | | |
| 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 | | Other: | | | | |
| 2833.29.20 | 00 | Of iron | kg | Free | | Free |
| 2833.29.40 | 00 | Of chromium | kg | 3.7% | Free (A,AU,BH, CA,CL,E, IL,J,JO, MA,MX,P,SG) | 25% |
| 2833.29.51 | 00 | Other | kg | 3.7% | Free (A,AU,BH, CA,CL,E,IL,J,JO, K,MA,MX, P,SG) | 30% |
| 2833.40 | | Peroxosulfates (persulfates): | | | | |
| 2833.40.60 | 00 | Other | kg | 3.1% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 25% |
| 2834 | | Nitrites; nitrates: | | | | |
