9902.08.51 - Reactive Blue FC75311 (Sodium [2-[2-[[2-[3-[[4-fluoro-6-[phenyl[2-[[2-(sulfooxy) ethyl]sulfonyl] ethyl]amino]-1,3,5-triazin-2-yl]amino]-2-(hydroxy-kO)-5-sulfophenyl] diazenyl-kN] phenylmethyl] diazenyl-kN]-4-sulfobenzoato (6-)-kO]-Cuprate(4-) (CAS No.156830-72-7) (provided for in subheading 3204.16.30)

This HTS category, 9902.08.51, specifically addresses the temporary classification of Reactive Blue FC75311, identified by CAS Number 156830-72-7. This substance is a complex organic chemical compound, a cuprate, that functions as a reactive dye. Its inclusion within Chapter 99 signifies a temporary modification to tariff treatment, often related to specific trade agreements or temporary import restrictions enacted under legislation like Section 22 of the Agricultural Adjustment Act.

While the broader HTS system classifies dyes and pigments under headings such as 3204, this specific subheading (3204.16.30) serves as the primary classification for the substance under normal circumstances. However, the 9902 code indicates a deviation from standard classification, likely due to a temporary legislative action. It is crucial to differentiate this temporary classification from the permanent classification of various goods found in the earlier chapters of the HTS, such as live animals (Chapters 01) or other manufactured goods, as this code is for a very specific chemical product under special provisions.

As this is a leaf node, there are no further subcategories within 9902.08.51. The classification is precisely defined by the chemical identity and the temporary nature of its tariff treatment. Classification under this code requires verification of the substance's identity as Reactive Blue FC75311 and confirmation that the temporary import provision under which it is being entered is currently in effect.