Sulfur-Coated Urea Ammonium Sulfate
A controlled-release fertilizer blend of sulfur-coated urea and ammonium sulfate, reducing application frequency. This product falls under tariff item 3102.90.00 as an unspecified mixture of nitrogenous fertilizers, with the sulfur coating not altering its classification.
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 packaged for retail sale
Chapter Note 2 excludes goods in forms or packages described in heading 31.05.
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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
• Describe the coating as a physical modification, not a chemical change, to maintain classification
• Provide the nitrogen content and coating percentage for CBSA
• Ensure the product is not in retail packages
Related Products under Tariff item 3102.90.00
Ammoniacal Urea Solution 28% Nitrogen
An aqueous solution of urea in ammoniacal form, containing 28% nitrogen by weight. This liquid fertilizer is used in fertigation systems for orchards and falls under tariff item 3102.90.00 as a liquid fertilizer of urea in ammoniacal solution, as described in Chapter 31 Note 2(d).
Ammonium Chloride Chalk Fertilizer Mix
A mixture of ammonium chloride with chalk or gypsum, used as a nitrogen fertilizer and soil amendment for sodic soils. This product falls under tariff item 3102.90.00 as a fertilizer consisting of ammonium chloride mixed with inorganic non-fertilising substances, per Chapter 31 Note 2(c).
Ammonium Sulfate with Urea Blend 21-0-0
A granular fertilizer blend of ammonium sulfate and urea, providing 21% nitrogen. This mixture falls under tariff item 3102.90.00 as a mixture of goods described in Note 2(a)(iv) and (viii), not specified elsewhere in heading 31.02.
Calcium Nitrate Ammonium Nitrate Mixture
A double salt fertilizer combining calcium nitrate and ammonium nitrate, offering high solubility for hydroponic and greenhouse applications. This product falls under tariff item 3102.90.00 as a double salt or mixture of calcium nitrate and ammonium nitrate, per Chapter 31 Note 2(a)(v).
Gypsum-Amended Ammonium Nitrate
Ammonium nitrate mixed with gypsum to control dust and add calcium, used on alkaline soils. This mixture falls under tariff item 3102.90.00 as a fertilizer consisting of ammonium nitrate mixed with gypsum, an inorganic non-fertilising substance, per Chapter 31 Note 2(c).
Multi-Nitrogen Starter Fertilizer 20-5-10
A liquid starter fertilizer containing ammonium nitrate, urea, and minor amounts of phosphate and potash, applied at planting for row crops. Despite the presence of P and K, the nitrogen-dominant composition classifies it under tariff item 3102.90.00 as an unspecified mixture of nitrogenous fertilizers.