HS Code for MAP fertilizer

MAP fertilizer, or monoammonium phosphate, is classified under HS code 3105.40. This classification falls under Chapter 31, which is dedicated to fertilizers. Heading 3105 covers mineral or chemical fertilizers containing two or three of the fertilizing elements: nitrogen, phosphorus, and potassium. Since MAP contains both nitrogen (from the ammonium) and phosphorus (from the phosphate), it is considered a binary fertilizer. The subheading 3105.40 specifically names ammonium dihydrogenorthophosphate (monoammonium phosphate) and mixtures thereof with diammonium hydrogenorthophosphate (diammonium phosphate). This classification is used for the commercial product intended for agricultural use, whether it is in granular, powdered, or liquid form.

Products Included

• Monoammonium phosphate (MAP) fertilizer grade
• Mixtures of MAP and DAP (Diammonium phosphate)
• Granular MAP for soil application
• Water-soluble MAP for fertigation
• Technical grade MAP when used as a fertilizer component

Common Misclassification

MAP is sometimes misclassified under HS code 2835.22, which covers mono- or disodium phosphates. However, because MAP is an ammonium phosphate, it belongs in heading 3105 when used as a fertilizer. Another common error is confusing it with 3105.30, which is reserved for pure Diammonium phosphate (DAP). If a shipment contains a mixture of MAP and DAP, 3105.40 is the correct code as per the subheading text. Additionally, pure ammonium phosphates that are not of a kind used as fertilizers might theoretically fall under Chapter 28, but Note 2 to Chapter 31 generally directs these specific compounds to heading 3105.

FAQ

What is the HS code for MAP fertilizer?

The HS code for monoammonium phosphate (MAP) fertilizer is 3105.40.

Can MAP be classified in Chapter 28?

Generally no; even if chemically pure, ammonium phosphates like MAP are specifically directed to heading 3105 by the Chapter 31 legal notes when they are used as fertilizers.