Analysis
HTS 2814.20.00 covers ammonia in aqueous solution under heading 2814 (ammonia, anhydrous or in aqueous solution).
The normal trade relations rate here is zero, shared by about 29% of the 274 tariff lines in chapter 28, a useful check when a neighbouring dutiable line is a candidate. Chapter 99 measures such as Section 301 or 232 can still apply on top, depending on where the goods come from.
The other line in the same group is 2814.10.00 (ammonia, anhydrous or in aqueous solution: anhydrous ammonia, duty-free).
Census statistics map these goods to NAICS 325311 (Nitrogenous Fertilizer Manufacturing), an industry of 194 US establishments employing 7,033 people. That concordance is how imports of this line are compared with US output.
The general rate of Free has not changed in any edition of the schedule since Jan 2023.
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 2814.10.00 | Ammonia, anhydrous or in aqueous solution: anhydrous ammonia | Free |