From Chapter 28: Chapter 28
| HTS Code | Description | General Duty |
|---|---|---|
| 2811110000 | Other inorganic acids Hydrogen fluoride (Hydrofluoric acid) | Free |
| 2811120000 | Other inorganic acids Hydrogen cyanide (hydrocyanic acid) | 4.2% |
| 2811191000 | Other Arsenic acid | 2.3% |
| 2811193000 | Other Hydrobromic acid | Free |
| 2811196100 | Other Other | 4.2% |
| 2811196110 | Other Sulfamic acid | 4.2% |
| 2811196190 | Other | 4.2% |
| 2811210000 | Other inorganic oxygen compounds of nonmetals Carbon dioxide | 3.7% |
| 2811221000 | Silicon dioxide Synthetic silica gel | 3.7% |
| 2811225000 | Silicon dioxide Other | Free |
| 2811291000 | Other Arsenic trioxide | Free |
| 2811292000 | Other Selenium dioxide | Free |
| 2811293000 | Other Sulfur dioxide | 4.2% |
| 2811295000 | Other Other | 3.7% |