Double Superphosphate Granules (DSP) from United States
Double superphosphate (DSP) granules are a phosphatic fertilizer produced by reacting phosphate rock with phosphoric acid, yielding 40-46% P2O5. Unlike single superphosphate, DSP contains no calcium sulfate, making it a concentrated source of phosphorus for agricultural use. It falls under tariff item 3103.19.00 as a superphosphate other than those specified elsewhere in heading 31.03.
Duty Rate — United States → Canada
0%
Import Tips
• Ensure the DSP is not mixed with other fertilizers or additives that could shift classification to heading 31.05
• Verify the P2O5 content and provide a certificate of analysis to customs
• Check if the product requires registration under the Fertilizers Act with the Canadian Food Inspection Agency