Ammonium Sulfamate Granular Herbicide from China
Water-soluble granules of ammonium sulfamate ((NH4)2SO3), an inorganic salt herbicide effective against woody plants and poison ivy when dissolved and sprayed. Sold in 1kg retail bags for backyard use, it fits HTS 3808.93.20.00 as a plant regulator/herbicide with inorganic substance. It acts systemically to inhibit enzyme activity in target plants.
Duty Rate — China → United States
40%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Provide analytical certificates confirming ammonium sulfamate content over 50% for proper classification
• Avoid moisture exposure during shipping to prevent clumping, which could lead to quality disputes at customs
• Register with USDA APHIS if destined for agricultural use to meet plant protection standards