2835.29.51.00 - Other

This classification, HTS Code 2835.29.51.00, pertains to "Other" phosphates not specifically enumerated in preceding subheadings within the phosphates category. It encompasses a broad range of phosphate salts that do not fall under the more defined categories such as those of aluminum, triammonium, or trisodium. These may include phosphates derived from various other metals or organic bases, used in a diverse array of industrial applications.

The key distinguishing factor for this category is the absence of specific chemical composition or elemental origin that would warrant a more precise classification. Unlike the sibling categories which explicitly identify the cation (e.g., aluminum, triammonium, trisodium), this "Other" classification serves as a residual category for any phosphate not otherwise specified. It is crucial to examine the chemical makeup and the cation of the phosphate salt to determine if it qualifies for a more specific subheading before resorting to this general category.

As a leaf node, this classification has no further subcategories. Therefore, the classification hinges entirely on identifying a phosphate that does not fit the criteria of other listed phosphate types within 2835.29. Proper identification typically involves reviewing the chemical analysis and the associated customs documentation to confirm the absence of specific defining characteristics of the enumerated sibling categories.