Caprolactam Byproduct Ammonium Sulfate
High-purity ammonium sulfate recovered as a byproduct of caprolactam production, repurposed for agricultural fertilizer use. It contains trace organic residuals but remains essentially ammonium sulfate, and is not put up in retail forms or packages.
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 |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is mixed with other substances or put up for retail sale.
Mixtures or retail-packaged fertilizers fall under heading 31.05.
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
• Verify that the trace organic residuals do not alter the product's essential character as ammonium sulfate; if they do, classification may change
• Ensure the product is not packaged for retail sale
• Provide documentation on the production process to CBSA to support classification
Related Products under Tariff item 3102.29.00
AgroChem Ammonium Sulfate Bulk Fertilizer
Bulk ammonium sulfate fertilizer with an N-P-K analysis of 21-0-0, supplied in 50 kg bags or supersacks for commercial farming operations. It is a pure ammonium sulfate product, not mixed with ammonium nitrate or other nitrogenous compounds, and is not put up in the forms or packages described in heading 31.05.
Ammonium Sulfate with 24% Sulfur Analysis
Premium ammonium sulfate fertilizer with a guaranteed 24% elemental sulfur content, designed for high-sulfur-demanding crops such as onions and brassicas. It is a pure ammonium sulfate product, not combined with other nitrogenous compounds, and is not in retail packaging.
Granular Ammonium Sulfate Fertilizer 21-0-0
Granular ammonium sulfate fertilizer with 21% nitrogen and 24% sulfur, used to correct sulfur deficiencies in crops like corn and wheat. It is a pure ammonium sulfate product, not mixed with other nitrogenous fertilizers, and is not in retail packaging.
Industrial Grade Ammonium Sulfate Crystals
Pure crystalline ammonium sulfate for industrial agriculture, used for alkaline soil correction and as a nitrogen source in large-scale farming. It is not put up in retail forms or packages and is not mixed with other nitrogenous compounds.
Low-Cadmium Ammonium Sulfate Fertilizer
Purified ammonium sulfate fertilizer with low cadmium content (Cd <1 ppm) for organic-adjacent farming systems. Despite purification, the base material remains ammonium sulfate, and it is not put up in retail forms or packages.
Micronized Ammonium Sulfate Powder
Ultra-fine micronized ammonium sulfate powder with particle size less than 50 microns, used for precision agriculture and suspension fertilizers. It is a pure ammonium sulfate product, not mixed with other nitrogenous compounds, and is not in retail packaging.