9902.10.18 - Mixtures of ammonium ethyl carbamoylphosphonate (Fosamine-ammonium) (CAS No. 25954-13-6) and application adjuvants (provided for in subheading 3808.93.50)

HTS Code 9902.10.18 specifically covers mixtures containing ammonium ethyl carbamoylphosphonate, also known as Fosamine-ammonium (CAS No. 25954-13-6), when formulated with application adjuvants. These adjuvants are typically materials that enhance the effectiveness or application of the active ingredient. The classification of these mixtures is tied to a specific temporary modification or restriction, as indicated by its inclusion within Chapter 99 of the Harmonized Tariff Schedule.

This category is distinct from the general chemical classifications found in earlier chapters of the HTS. While other chapters may cover individual chemicals or broader categories of pesticides and agricultural chemicals, HTS 9902.10.18 addresses a precise formulation under special tariff provisions. It is differentiated from the base subheading 3808.93.50, which would cover application adjuvants if they were classified independently, by its inclusion of the specific active ingredient Fosamine-ammonium and its status under temporary legislation.

As this is a leaf node within the HTS database, there are no further subcategories. Classification under 9902.10.18 is final for goods meeting its specific composition and originating from or subject to the temporary provisions outlined in Chapter 99. Importers must ensure that the goods precisely match the description, including the presence of both Fosamine-ammonium and application adjuvants, and are aware of any regulatory requirements associated with these temporary classifications.