9902.10.55 - Mixtures of sodium salts of iminodisuccinic acid (CAS No. 144538-83-0), whether or not in water (provided for in subheading 3824.99.92)

This HTS category, 9902.10.55, specifically covers mixtures of sodium salts of iminodisuccinic acid, identified by CAS Number 144538-83-0. These mixtures are classified here regardless of whether they are presented in an aqueous solution. The primary function and chemical composition of these sodium iminodisuccinate salts are the defining criteria for this classification. This provision is temporary and is established under Section XXII of the Harmonized Tariff Schedule, which deals with special classification provisions, temporary legislation, and trade agreement modifications.

Category 9902.10.55 is distinct from other temporary provisions within Chapter 99, as well as from the permanent categories of the HTS. Unlike broader chemical mixtures found in Chapter 38, this code targets a very specific chemical compound and its salts. Its placement within Section XXII signifies that its application is governed by specific trade agreements or temporary legislative measures, often providing a distinct tariff treatment or restriction separate from standard classifications. It is crucial to note that the provision "provided for in subheading 3824.99.92" indicates that these goods would otherwise fall under a general classification for chemical products not elsewhere specified, but are being temporarily assigned to this more specific provisional code.

As this is a leaf node in the HTS classification structure, there are no further subcategories. Classification under 9902.10.55 is definitive for the described mixtures of sodium salts of iminodisuccinic acid. Importers must ensure that the product precisely matches the chemical identity and form described to correctly utilize this temporary provision. Any variations in the salt form or the presence of significant other components that alter the primary identity of sodium iminodisuccinate may necessitate classification under a different HTS code, likely within Chapter 38.