| 2711.29.00 | 20 | Butanes with a purity of 90 liquid volume percent or more, but less than 95 liquid volume percent | bbl | | | |
| 2801 | | Fluorine, chlorine, bromine and iodine: | | | | |
| 2801.30 | | Fluorine; bromine: | | | | |
| 2801.30.10 | 00 | Fluorine | kg | 3.7% | Free (A,AU,BH, CA,CL,E,IL,J,JO, MA,MX,P,SG) | 25% |
| 2803.00.00 | | Carbon (carbon blacks and other forms of carbon not elsewhere specified or included) | | Free | | 20% |
| 2804.50.00 | | Boron; tellurium | | Free | | 25% |
| 2804.50.00 | 20 | Tellurium | kg | | | |
| 2811.11.00 | 00 | Hydrogen fluoride (Hydrofluoric acid) | kg | Free | | Free |
| 2814 | | Ammonia, anhydrous or in aqueous solution: | | | | |
| 2814.20.00 | 00 | Ammonia in aqueous solution | t NH3 t | Free | | Free |
| 2815.12.00 | 00 | In aqueous solution (Soda lye or liquid soda) | kg NaOH kg | Free | | 1.1¡é/kg |
| 2818 | | Artificial corundum, whether or not chemically defined; aluminum oxide; aluminum hydroxide: | | | | |
| 2818.10.20 | 10 | White, pink or ruby, containing more than 97.5 percent by weight of aluminum oxide | kg | | | |
| 2818.20.00 | 00 | Aluminum oxide, other than artificial corundum | kg | Free | | 1.1¡é/kg |
| 2818.30.00 | 00 | Aluminum hydroxide | kg | Free | | 1.1¡é/kg |
| 2821 | | Iron oxides and hydroxides; earth colors containing 70 percent or more by weight of combined iron evaluated as Fe2O3: | | | | |
| 2826 | | Fluorides; fluorosilicates, fluoroaluminates and other complex fluorine salts: | | | | |
| 2826.12.00 | 00 | Fluorides: | | | | |
| 2826.12.00 | 00 | Of aluminum | kg | Free | | 25% |
| 2826.30.00 | 00 | Sodium hexafluoroaluminate (Synthetic cryolite) | t | Free | | Free |
| 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% |
| 2827.32.00 | 00 | Of aluminum | kg | Free | | 25% |
| 2830.90.10 | 00 | Zinc sulfide, luminescent grade having a purity of 99.99 percent or more by weight | kg | Free | | 11% |
| 2833 | | Sulfates; alums; peroxosulfates (persulfates): | | | | |
| 2833.22.00 | 00 | Of aluminum | kg | Free | | 10% |
