Sulpomag Potassium-Magnesium Fertilizer
Granulated sulpomag (K2SO4·2MgSO4) providing potassium, magnesium, and sulfur for crop nutrition. As a potassic mineral fertilizer not matching the enumerated salts in chapter note 4, it is classifiable under tariff item 3104.90.00.
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 mixed with other fertilizers
Mixtures containing multiple nutrients 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
• Ensure the product is not put up in forms or packages described in heading 31.05
• Verify the product is not mixed with other fertilizing elements
• Provide a detailed product specification sheet to the CBSA for accurate classification
Related Products under Tariff item 3104.90.00
Granular Potassium Fertilizer 0-0-50
Granular potassium fertilizer with a 0-0-50 analysis, providing 50% potassium oxide (K2O) for sidedress applications. It is a potassic mineral fertilizer not otherwise specified under heading 31.04, as it does not match the enumerated salts in chapter note 4.
Liquid Potassium Thiosulfate Fertilizer
Liquid potassium thiosulfate fertilizer containing 25% K2S2O3, used for in-furrow and foliar applications. As a liquid potassic fertilizer not specified in the enumerated salts of chapter note 4, it falls under tariff item 3104.90.00 as 'Other'.
Mono Potassium Phosphate (MKP) Fertilizer
Water-soluble mono potassium phosphate (KH2PO4) fertilizer for fertigation, providing both potassium and phosphorus. Although it contains phosphorus, it is primarily a potassic fertilizer and is not excluded by chapter note 4, so it is classifiable under tariff item 3104.90.00.
Organic Potassium Sulfate Fertilizer
OMRI-listed potassium sulfate fertilizer derived from natural sulfate salts, suitable for certified organic production. As a potassic fertilizer not matching the enumerated salts in chapter note 4, it falls under tariff item 3104.90.00 as 'Other'.
Potassium Chloride Fertilizer (Muriate of Potash)
Granular potassium chloride (KCl), also known as muriate of potash, is a primary potassic fertilizer providing essential potassium for plant growth. It is not excluded by chapter note 4 and is classifiable under tariff item 3104.90.00 as 'Other' potassic fertilizer.
Potassium Magnesium Sulfate Fertilizer
Langbeinite ore-based fertilizer containing potassium, magnesium, and sulfur, used in organic farming. As a mineral potassic fertilizer not matching the specific salts in chapter note 4, it is classifiable under tariff item 3104.90.00.