9902.13.11 - Acrylic staple fibers (polyacrylonitrile staple) containing 85 percent or more by weight of acrylonitrile units and 2 percent or more but not over 3 percent of water, dyed (not pigmented), crimped, with an average decitex of 1.3 (plus or minus 10 percent) and fiber length of 40 mm (plus or minus 10 percent) (provided for in subheading 5503.30.00)

This HTS classification, 9902.13.11, pertains to specifically defined acrylic staple fibers. These fibers are characterized by their composition, requiring a minimum of 85% acrylonitrile units by weight, and a controlled water content of 2% to 3%. Further defining criteria include that the fibers are dyed (not pigmented), crimped, and possess an average decitex of 1.3 (with a 10% tolerance) and a fiber length of 40 mm (also with a 10% tolerance). This entry is specifically provided for under subheading 5503.30.00, indicating its primary classification within the general category of synthetic staple fibers.

This particular classification is a temporary or specialized provision, distinct from the primary HTS chapters that might otherwise cover synthetic fibers. While siblings at the root level of the HTS database encompass a vast array of goods, such as live animals (e.g., 0101, 0102), this category's focus is strictly on a highly specific type of manufactured textile fiber. Its existence within Chapter 99 signifies a special trade status, potentially due to temporary legislation or trade agreements, and differentiates it from standard classifications found in earlier chapters.

As a leaf node, HTS 9902.13.11 does not have further subcategories. Therefore, classification within this code is definitive for goods meeting all the stipulated physical and chemical characteristics. It represents a final point of classification for these precisely described acrylic staple fibers, indicating that no further breakdown or specialization is provided for under this particular temporary code. Proper identification relies entirely on fulfilling the exact specifications outlined in the description, distinguishing it from other acrylic fibers or synthetic staples that may not meet these stringent criteria.