HTS heading 3102
Mineral or chemical fertilizers, nitrogenous — 13 codes under this heading, with the duty on each.
| Code | Description | General rate | Units |
|---|---|---|---|
| 3102 | Mineral or chemical fertilizers, nitrogenous + Ch. 99 | not stated | — |
| 3102.10.00 | Urea, whether or not in aqueous solution + Ch. 99 | Free | — |
| 3102.10.00.10 | Solid urea + Ch. 99 | Free (inherited from 3102.10.00) | t |
| 3102.10.00.30 | Diesel exhaust fluid (DEF) of a kind meeting ISO 22241 + Ch. 99 | Free (inherited from 3102.10.00) | t |
| 3102.10.00.50 | Other + Ch. 99 | Free (inherited from 3102.10.00) | t |
| 3102.21.00.00 | Ammonium sulfate + Ch. 99 | Free | t |
| 3102.29.00.00 | Other + Ch. 99 | Free | t |
| 3102.30.00.00 | Ammonium nitrate, whether or not in aqueous solution + Ch. 99 | Free | t |
| 3102.40.00.00 | Mixtures of ammonium nitrate with calcium carbonate or other inorganic nonfertilizing substances + Ch. 99 | Free | t |
| 3102.50.00.00 | Sodium nitrate + Ch. 99 | Free | t |
| 3102.60.00.00 | Double salts and mixtures of calcium nitrate and ammonium nitrate + Ch. 99 | Free | t |
| 3102.80.00.00 | Mixtures of urea and ammonium nitrate in aqueous or ammoniacal solution + Ch. 99 | Free | t |
| 3102.90.01.00 | Other, including mixtures not specified in the foregoing subheadings + Ch. 99 | Free | t |
3 of these lines state no rate of their own and inherit one from the line above, which is how the schedule is read. Each says which line it came from.
Additional duties may apply
13 lines here reference Chapter 99, where Section 301, Section 232 and other additional duties live. Those are charged on top of the general rate and depend on where the goods were made. What those provisions are.
Source: Harmonized Tariff Schedule of the United States, U.S. International Trade Commission (public domain). Classification and the duties that finally apply to a shipment are a licensed customs broker's call.