9902.08.29 - Basic Yellow 40 (2-[7-(diethylamino)-2-oxo-2H-chromen- 3-yl]-1,3-dimethyl-1H-3,1-benzimidazol-3-ium chloride) (CAS No. 29556-33-0) (provided for in subheading 3204.13.10)

HTS Code 9902.08.29 specifically covers Basic Yellow 40, a particular chemical compound identified by its CAS number 29556-33-0. This classification is designated for a fluorescent brightener or dye, falling under the broader provisions of Section XXII, which deals with special classification provisions and temporary legislation. The description provides the full chemical name for precise identification, ensuring that only this specific substance is classified under this heading.

This specialized heading is situated within Chapter 99, which houses temporary legislation and modifications, indicating that this classification may be subject to change or specific trade agreement provisions. Its inclusion here, rather than under a permanent chapter for dyes (such as Chapter 32), highlights its temporary or specific application status. The reference to subheading 3204.13.10 indicates that, absent the temporary provisions of Chapter 99, Basic Yellow 40 would typically be classified under specific dyestuffs.

As a leaf node within the HTS database, HTS Code 9902.08.29 does not have further subcategories. Therefore, the focus for classification professionals is on the accurate identification of Basic Yellow 40 itself. Importers and exporters must ensure that the chemical compound they are shipping precisely matches the description and CAS number provided, as any deviation could lead to misclassification and associated customs issues, particularly given the temporary nature of this classification.