From Chapter 28: Chapter 28
| HTS Code | Description | General Duty |
|---|---|---|
| 2837110000 | Cyanides and cyanide oxides Of sodium | Free |
| 2837190100 | Cyanides and cyanide oxides Other | Free |
| 2837190110 | Other Potassium cyanide | Free |
| 2837190115 | Other Calcium cyanide | Free |
| 2837190125 | Other | Free |
| 2837201000 | Complex cyanides Potassium ferricyanide | 1.1% |
| 2837205100 | Complex cyanides Other | 1.7% |