Langbeinite Potassium Sulfate Mineral Fertilizer from Mexico
Langbeinite is a naturally occurring mineral composed of potassium, magnesium, and sulfur, marketed as a fertilizer for its potassium sulfate content. It is classified under tariff item 3104.30.00 because it is a potassic mineral fertilizer, specifically potassium sulfate, not a separate chemically defined compound. The presence of magnesium does not alter its classification as a potassium sulfate fertilizer under Chapter 31.
Duty Rate — Mexico → Canada
Import Tips
• Ensure the product is not put up in forms or packages described in heading 31.05 (e.g
• tablets or retail packs), as that would change classification
• Verify the langbeinite is not mixed with other fertilizers or substances that could shift it to another heading
• Keep documentation of the mineral's composition to support the potassium sulfate classification