Standard Ammonium Sulfate 21% Nitrogen from Japan
Standard crystalline ammonium sulfate providing 21% nitrogen for general field crops like soybeans and rice. Falls squarely under HTS 3102.21.00.00 as described in chapter note 2(a)(iv) for pure ammonium sulfate. Widely used for its acidifying effect on alkaline soils.
Duty Rate — Japan → United States
0%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Batch testing for heavy metals required; exceedances may trigger hazardous material regulations
• Declare exact nitrogen content on commercial invoice to match 3102 nitrogenous fertilizer heading
• Avoid co-mingling with nitrate products in containers to prevent safety classification issues