Prilled Ammonium Sulfate Industrial Grade
Prilled ammonium sulfate used in industrial agriculture for alkaline soil correction and as a nitrogen source in turf management. Classified under HTS 3102.21.00.00 as it qualifies as pure ammonium sulfate per heading 3102 notes (a)(iv). Its small prill size ensures uniform application in large-scale farming.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If double salts with calcium nitrate
Mixtures of ammonium sulfate with calcium nitrate are covered under 3102.50 per chapter note 2(a)(v).
If packaged for retail sale
Retail-packed ammonium sulfate shifts to heading 3105 regardless of purity.
If chemically pure for non-fertilizer use
Pure ammonium sulfate as industrial chemical (not fertilizer) may fall under inorganic chemicals chapter 28.
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Import Tips & Compliance
• Include material safety data sheets (MSDS) highlighting non-explosive nature distinct from ammonium nitrate
• Confirm absence of mixtures with chalk or gypsum to stay under 3102 rather than mixed formulations
• Label shipments clearly as 'agricultural fertilizer' to avoid scrutiny as industrial chemicals under chapter exclusions
Related Products under HTS 3102.21.00.00
Granular Ammonium Sulfate 21-0-0 Fertilizer
Granular ammonium sulfate fertilizer with 21% nitrogen and 24% sulfur content, used primarily for correcting sulfur deficiencies in crops like corn and wheat. It falls under HTS 3102.21.00.00 as pure ammonium sulfate not put up in retail packages of heading 3105. The prilled form allows for even spreading and slow-release nitrogen supply to plants.
Bulk Ammonium Sulfate for Cotton Crops
Bulk ammonium sulfate specifically formulated for cotton farming to supply nitrogen and sulfur during vegetative growth stages. It meets HTS 3102.21.00.00 criteria as ammonium sulfate without retail packaging or prohibited mixtures. Helps lower soil pH while providing essential nutrients.
Standard Ammonium Sulfate 21% Nitrogen
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.
Water-Soluble Ammonium Sulfate Fertilizer
Highly water-soluble ammonium sulfate for fertigation systems in greenhouse vegetable production. Classified under HTS 3102.21.00.00 meeting purity standards for ammonium sulfate without additives. Enables precise nutrient delivery through drip irrigation.
Agricultural Grade Ammonium Sulfate Pellets
Pelletized agricultural grade ammonium sulfate for easy handling in mechanical spreaders on golf courses and lawns. HTS 3102.21.00.00 applies as pure ammonium sulfate per note 2(a)(iv), not retail packaged. Provides dual nitrogen and sulfur nutrition.