Granular Ammonium Sulfate 21-0-0 Fertilizer
Granular ammonium sulfate fertilizer with 21% nitrogen and 24% sulfur, used for correcting sulfur deficiencies in crops like corn and wheat. This product is pure ammonium sulfate, not in retail packaging, and falls under tariff item 3102.21.00 as per chapter note 2(a)(iv).
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If sold in retail packages
Retail-packaged fertilizers fall under heading 31.05.
If mixed with other nitrogenous compounds
Mixtures of ammonium sulfate with other nitrogen fertilizers are classified here.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Confirm the product does not contain additives that would change its classification
• Ensure the packaging is not retail-sized to stay under 3102.21.00
• Prepare a detailed product specification sheet for CBSA inspection
Related Products under Tariff item 3102.21.00
Agricultural Grade Ammonium Sulfate Pellets
Pelletized agricultural grade ammonium sulfate, formulated for easy handling in mechanical spreaders on golf courses and lawns. This product is pure ammonium sulfate, not put up in retail packages, and therefore falls under tariff item 3102.21.00 as per chapter note 2(a)(iv).
Bulk Ammonium Sulfate for Cotton Crops
Bulk ammonium sulfate formulated for cotton farming, supplying nitrogen and sulfur during vegetative growth. It is pure ammonium sulfate without retail packaging or prohibited additives, qualifying under tariff item 3102.21.00 per chapter note 2(a)(iv).
Prilled Ammonium Sulfate Industrial Grade
Prilled ammonium sulfate for industrial agriculture, used for alkaline soil correction and as a nitrogen source in turf management. It qualifies as pure ammonium sulfate under tariff item 3102.21.00, per chapter note 2(a)(iv), and is not put up in retail forms.
Standard Ammonium Sulfate 21% Nitrogen
Standard crystalline ammonium sulfate providing 21% nitrogen for general field crops like soybeans and rice. This pure ammonium sulfate, not in retail packaging, falls under tariff item 3102.21.00 as described in chapter note 2(a)(iv).
Water-Soluble Ammonium Sulfate Fertilizer
Highly water-soluble ammonium sulfate for fertigation systems in greenhouse vegetable production. This product meets purity standards for ammonium sulfate without additives, and is not in retail packaging, so it falls under tariff item 3102.21.00 per chapter note 2(a)(iv).