HS Code for DAP fertilizer

DAP fertilizer, or diammonium hydrogenorthophosphate, is classified under HS code 310530. This classification is governed by the General Rules of Interpretation (GRI) 1 and 6, which prioritize the specific chemical identity of the product. Within Chapter 31, which covers fertilizers, heading 3105 is reserved for mineral or chemical fertilizers containing two or three of the fertilizing elements nitrogen, phosphorus, and potassium. Since DAP is a compound containing both nitrogen (in the form of ammonium) and phosphorus (as phosphate), it is explicitly named in subheading 310530. The classification remains consistent regardless of whether the product is intended for direct soil application or as a component in complex fertilizer blends, provided it remains a separate chemically defined compound as described in the Harmonized System Explanatory Notes.

Products Included

• Technical grade diammonium phosphate
• Agricultural grade DAP granules
• Diammonium hydrogenorthophosphate in bulk
• DAP used as a fire retardant or yeast nutrient (when not packaged for retail)

Common Misclassification

DAP is frequently confused with Monoammonium Phosphate (MAP), which falls under HS code 310540. While both are ammonium phosphates, MAP contains only one ammonium group. Additionally, it may be misclassified under 3102 (nitrogenous fertilizers) or 3103 (phosphatic fertilizers) if the dual-nutrient nature is overlooked. Some importers mistakenly use 283539 for polyphosphates, but 310530 is the specific code for the fertilizer-grade diammonium salt.

FAQ

What is the HS code for DAP fertilizer?

The HS code for DAP fertilizer is 310530, specifically covering diammonium hydrogenorthophosphate.

Does the purity level change the HS code for DAP?

Generally, no. Even high-purity technical grade DAP remains under 310530 unless it is put up in specific retail forms or tablets, which might shift it to 310510.