9902.11.05 - Poly(ammonium acryloyldimethyl taurate-co-vinyl pyrrolidone) (CAS No. 335383-60-3) (provided for in subheading 3906.90.50)

This HTS category, 9902.11.05, specifically covers Poly(ammonium acryloyldimethyl taurate-co-vinyl pyrrolidone), identified by CAS No. 335383-60-3. This synthetic polymer is provisionally classified under subheading 3906.90.50 of the HTSUS, which pertains to other acrylic polymers in primary forms. The presence of this code within Chapter 99 signifies a temporary measure, such as a trade agreement modification or an additional import restriction enacted under Section 22 of the Agricultural Adjustment Act.

As this is a leaf node within Chapter 99, there are no further subcategories to explore. Its distinctiveness lies in its specific identification as a polymer with a defined chemical structure and CAS number, falling under temporary trade provisions rather than permanent commodity classifications. While sibling categories in other chapters might cover broadly similar chemical substances or finished goods incorporating such polymers, this specific code addresses the direct import of this particular polymer under unique trade conditions. Therefore, classification under 9902.11.05 is contingent on the applicability of the temporary legislation or proclamation associated with this HTS code, in addition to the underlying classification under Chapter 39.