9902.13.19 - Modacrylic staple fibers containing by weight 2 percent or more but not over 3 percent of water, not pigmented (ecru), crimped, with a decitex of 1.7 and fiber length of 38 mm (provided for in subheading 5503.30.00)

This HTS classification, 9902.13.19, specifically covers modacrylic staple fibers that meet precise technical specifications. These fibers contain between 2% and 3% water by weight, are unpigmented (described as "ecru"), possess a crimped texture, a decitex of 1.7, and a fiber length of 38 mm. Crucially, this provision is a temporary measure, indicated by its placement within Chapter 99, and refers to goods otherwise classifiable under subheading 5503.30.00, which deals with staple fibers of acrylic or modacrylic.

Distinguishing this category from its sibling "leaf nodes" within the broader Chapter 99 is its highly specific nature. While other Chapter 99 provisions might represent temporary restrictions or modifications, this one targets a very particular type of modacrylic fiber based on its water content, color, crimp, decitex, and length. The intention is to apply specific, likely temporary, tariff or trade treatment to these precisely defined staple fibers, differentiating them from other modacrylic fibers or other materials that might fall under different Chapter 99 provisions.

As this is a leaf node, there are no further subcategories. This means that any modacrylic staple fiber meeting all the described physical and compositional criteria falls directly under this classification. For practical classification purposes, importers and exporters must verify the water content, pigmentation status, crimp, decitex, and fiber length against the specifications outlined in the description to ensure accurate application of this temporary provision.