HS Code for DAP MAP blend

DAP MAP blends are classified under HS code 3105.40. This code specifically addresses mineral or chemical fertilizers containing ammonium dihydrogenorthophosphate (monoammonium phosphate or MAP) and mixtures thereof with diammonium hydrogenorthophosphate (diammonium phosphate or DAP). Chapter 31 of the Harmonized System governs fertilizers. Heading 3105 is reserved for fertilizers containing two or three of the primary fertilizing elements: nitrogen, phosphorus, and potassium. MAP and DAP are both nitrogen-phosphorus (NP) fertilizers. While pure DAP has its own specific subheading (3105.30), the Harmonized System provides a specific subheading (3105.40) for MAP and any mixtures where MAP is present alongside DAP. This classification is straightforward but requires precise chemical identification. The blend is often used in agriculture to provide a specific ratio of nitrogen to phosphorus that supports early plant growth and root development. It is important to ensure the product does not contain potassium, as the addition of potash would move the classification to 3105.20. Furthermore, the classification under 3105.40 applies regardless of whether the product is in tablets or similar forms or in packages of a gross weight not exceeding 10 kg, although such retail packaging can sometimes trigger classification under 3105.10. However, for bulk agricultural trade, 3105.40 is the standard. The chemical purity and the specific mixture ratio are the primary factors that customs authorities examine to distinguish these products from other nitrogenous or phosphatic fertilizers.

Products Included

• Monoammonium phosphate (MAP)
• MAP and DAP mixtures
• Ammonium dihydrogenorthophosphate
• Granulated NP fertilizer blends (MAP-based)
• Technical grade MAP/DAP blends

Common Misclassification

The most common error is classifying a blend under 3105.30, which is strictly for pure Diammonium phosphate (DAP). Another error is using 3103.11 for superphosphates, which do not contain the nitrogen component found in MAP and DAP blends.

FAQ

What is the HS code for DAP MAP blend?

The HS code for a mixture of DAP and MAP is 3105.40.

Is pure MAP classified under the same code?

Yes, pure Monoammonium phosphate (MAP) is also classified under HS code 3105.40.