7110.11.00.20 - Sponge of the metal platinum

This HTS category, 7110.11.00.20, specifically covers platinum in a "sponge" form. This refers to platinum that has been processed to create a porous, absorbent material, often resembling a sponge due to its structure. This form is typically achieved through specific chemical reduction processes and is distinct from other forms of platinum handled by the Harmonized Tariff Schedule.

It is crucial to differentiate this "sponge" form from its sibling categories. While 7110.11.00.10 covers platinum in "grain and nuggets," which are discrete, particulate pieces, and 7110.11.00.50 accounts for all other unclassified forms of unwrought platinum, this category is exclusively for the porous, sponge-like material. The physical structure and production method are the key distinguishing factors.

As this is a leaf node within the HTS structure, there are no further subdivisions under this specific code. Therefore, the focus for classification within 7110.11.00.20 is solely on correctly identifying platinum that exhibits the characteristics of a sponge. This usually implies a high surface area and a lightweight, porous structure resulting from its manufacturing process.