2835 - Phosphinates (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined:

Category 2835 encompasses a diverse group of inorganic chemical compounds based on phosphorus. This includes phosphinates (also known as hypophosphites), phosphonates (also known as phosphites), and phosphates. Additionally, it covers polyphosphates, which are polymers of phosphate units. These substances are fundamental in various industrial applications, including fertilizers, detergents, food additives, and flame retardants.

As a category within Chapter 28, which deals with inorganic chemicals, HTS code 2835 is distinct from other major sections of the HTS. For instance, it is clearly differentiated from the live animal categories (0101 through 0105) that exist at the highest level of the HTS. Within Chapter 28 itself, 2835 stands apart from other inorganic chemical families such as acids, bases, and salts of other elements.

The subcategories within 2835 provide further specificity. Code 2835.10.00.00 is reserved for phosphinates and phosphonates, distinguishing them from the broader groups of phosphates and polyphosphates, which are further subdivided to reflect specific chemical structures and potential applications. This granular approach ensures precise classification for trade purposes.