| 2836.40.20 | 00 | Potassium hydrogencarbonate (Potassium bicarbonate) | kg | 1.3% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 4.8% |
| 2836.91.00 | | Lithium carbonates | | 3.7% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 25% |
| 2836.91.00 | 10 | U.S.P. grade | kg | | | |
| 2836.92.00 | 00 | Strontium carbonate | kg | 4.2% | Free (A,AU,BH, CA,CL,E, IL,J,JO, MA,MX,P,SG) | 25% |
| 2836.99.10 | 00 | Cobalt carbonates | kg | 4.2% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 30% |
| 2836.99.20 | 00 | Bismuth carbonate | kg | 5.5% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX, P,SG) | 35% |
| 2836.99.30 | 00 | Commercial ammonium carbonate and other ammonium carbonates | kg | 1.7% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 16% |
| 2836.99.40 | 00 | Lead carbonates | kg | 0.5% | Free (A,AU,BH, CA,CL,E, IL,J,JO, MA,MX,P,SG) | 4.5% |
| 2837 | | Cyanides, cyanide oxides and complex cyanides: | | | | |
| 2837.11.00 | 00 | Cyanides and cyanide oxides: | | | | |
| 2837.11.00 | 00 | Of sodium | kg | Free | | Free |
| 2837.19.01 | 10 | Potassium cyanide | kg | | | |
| 2837.20 | | Complex cyanides: | | | | |
| 2837.20.10 | 00 | Potassium ferricyanide | kg | 1.1% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 5.1% |
| 2839 | | Silicates; commercial alkali metal silicates: | | | | |
| 2839.11.00 | 00 | Of sodium: | | | | |
| 2839.11.00 | 00 | Sodium metasilicates | kg | 1.1% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 3% |
| 2839.90.10 | 00 | Of potassium | kg | 3.1% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 25% |
| 2840 | | Borates; peroxoborates (perborates): | | | | |
| 2840.11.00 | 00 | Disodium tetraborate (refined borax): | | | | |
| 2840.11.00 | 00 | Anhydrous | kg | 0.3% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 1.2% |
| 2840.20.00 | 00 | Other borates | kg | 3.7% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 25% |
| 2840.30.00 | | Peroxoborates (perborates) | | 3.7% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 25% |
| 2840.30.00 | 10 | Sodium perborate | kg | | | |
| 2841 | | Salts of oxometallic or peroxometallic acids: | | | | |
Harmonized Tariff Schedule of the United States inquiry: 3203Ã
