9902.10.58 - Mixtures of 2-methyl-N-[2-(2-oxoimidazolidin-1-yl)ethyl]prop-2-enamide (CAS No. 3089-19-8), 2-methylprop-2-enoic acid (CAS No. 79-41-4), 1-(2-aminoethyl)imidazolidin-2-one (CAS No. 6281-42-1) and benzene-1,4-diol (CAS No. 123-31-9) (provided for in subheading 3824.99.92)

This classification, HTS Code 9902.10.58, pertains to specific mixtures of chemical substances, including 2-methyl-N-[2-(2-oxoimidazolidin-1-yl)ethyl]prop-2-enamide, 2-methylprop-2-enoic acid, 1-(2-aminoethyl)imidazolidin-2-one, and benzene-1,4-diol. These mixtures are explicitly referenced as being "provided for in subheading 3824.99.92," indicating they are often treated as other manufactured goods not elsewhere specified, but are subject to special provisions under Chapter 99. The context of Chapter 99, "Temporary legislation; temporary modifications proclaimed pursuant to trade agreements legislation; additional import restrictions proclaimed pursuant to section 22 of the Agricultural Adjustment Act, as amended," signifies that the classification under 9902.10.58 is not necessarily based on the inherent nature of the goods themselves, but rather on external regulatory or policy considerations.

Given that this is a leaf node, there are no further subcategories to introduce. Instead, the focus for classification professionals rests on understanding the specific chemical composition outlined in the description and ensuring that any imported product matching this precise mixture is correctly routed to this special provision. The primary distinguishing factor for this classification is its placement within Chapter 99, which overrides standard classification principles that might otherwise direct these chemicals to different headings based on their individual chemical properties or intended use under Chapters 29 or 38. Therefore, adherence to this specific HTS code is dictated by temporary legislation or trade agreement provisions rather than the goods' inherent characteristics alone.