Ammonia, anhydrous or in aqueous solution:

HTS code 2814 classifies imports of: Ammonia, anhydrous or in aqueous solution:. This line sits within Chapter 28 (Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes), Section VI (Products of the Chemical or Allied Industries), and is catalogued as a heading in the USITC 2026 Basic Edition. The schedule specifies ad valorem (percentage-of-value) duty for this line. Chapter 28 covers a broad category with many neighboring tariff lines, so double-check the classification against the closest matches before filing.

The general (MFN / Column 1 General) rate for HTS 2814 is Free, which applies to most trading partners of the United States. No special preferential rate is listed for this line, so FTA origin alone will not reduce the general duty. Because the general rate is Free, most imports under this code enter the US without duty, though anti-dumping, countervailing, or Section 301 tariffs can still apply depending on country of origin.

Beyond the published rate, importers should check for Section 201 safeguards, Section 301 China tariffs, and any active AD/CVD orders that can materially change the real landed cost. Always verify the classification with a licensed customs broker before committing to a supply contract, this page is a research tool, not a customs ruling.