# HTS 2837: Cyanides, cyanide oxides and complex cyanides:

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Source: [2026 HTS Revision 21 (October 9, 2026)](https://hts.usitc.gov/search?query=2837). Additional duties by country of origin may apply; estimate a shipment's full duty with the tariff calculator: https://geopax.app/tariffs/calculator

## 2837: Cyanides, cyanide oxides and complex cyanides:

| Code | Description | General | Special | Column 2 | Units |
| --- | --- | --- | --- | --- | --- |
| 2837 | Cyanides, cyanide oxides and complex cyanides: |  |  |  |  |
|  |   Cyanides and cyanide oxides: |  |  |  |  |
| 2837.11.00.00 |     Of sodium | Free |  | Free | kg |
| 2837.19.01 |     Other | Free |  | Free |  |
| 2837.19.01.10 |       Potassium cyanide | Free |  | Free | kg |
| 2837.19.01.15 |       Calcium cyanide | Free |  | Free | kg |
| 2837.19.01.25 |       Other | Free |  | Free | kg |
| 2837.20 |   Complex cyanides: |  |  |  |  |
| 2837.20.10.00 |     Potassium ferricyanide | 1.1% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 5.1% | kg |
| 2837.20.51.00 |     Other | 1.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 8.5% | kg |