3105.30.00.00 - Diammonium hydrogenorthophosphate (Diammonium phosphate)

This HTS category specifically covers diammonium hydrogenorthophosphate, also commonly known as diammonium phosphate (DAP). This chemical compound is primarily utilized as a fertilizer due to its significant content of both nitrogen and phosphorus, essential nutrients for plant growth. Its granular or crystalline form and its direct application in agriculture are key characteristics defining its classification within this code.

Diammonium hydrogenorthophosphate is distinguished from its sibling categories by its precise chemical composition. Unlike category 3105.20.00.00, it does not contain potassium, meaning it is a fertilizer with only two of the three primary fertilizing elements. Furthermore, it is distinct from 3105.40.00, which covers ammonium dihydrogenorthophosphate (MAP) and mixtures of MAP and DAP. This node, 3105.30.00.00, is exclusively for diammonium hydrogenorthophosphate itself.

As this is a leaf node in the HTS database, there are no further subcategories. Classification decisions for goods falling under this code should therefore focus on confirming that the product is indeed diammonium hydrogenorthophosphate and that it is intended for use as a fertilizer, rather than any other industrial or chemical application.