HS Code for Modacrylic staple fibers

Modacrylic staple fibers are classified under HS code 5506.30 because they are synthetic fibers that have undergone mechanical processing such as carding, combing, or other preparations for spinning. Modacrylic is a synthetic copolymer consisting of acrylonitrile and other monomers, typically vinyl chloride or vinylidene chloride, which provides inherent flame-retardant properties. The classification under heading 5506 is specific to fibers that are no longer in their raw, as-produced state (which would fall under 5503) but have been further refined to align the fibers for the production of yarn. This mechanical alignment is a critical distinction in the Harmonized System. To qualify for this code, the fibers must be discontinuous (staple) and the modacrylic content must be the defining synthetic component. These fibers are widely utilized in the production of high-performance technical textiles, including protective workwear, faux fur, and upholstery for public transport, where fire safety regulations are stringent. The carding or combing process ensures that the fibers are uniform and ready for industrial spinning machines, distinguishing them from waste or raw tow.

Products Included

• Carded modacrylic staple fibers
• Combed modacrylic staple fibers
• Modacrylic fibers prepared for spinning
• Flame-retardant synthetic staple fibers (processed)
• Acrylic-modacrylic blend staple fibers (carded/combed)

Common Misclassification

Modacrylic staple fibers are frequently misclassified under HS code 5503.30. The distinction lies in the level of processing; 5503.30 is reserved for synthetic staple fibers that have not been carded, combed, or otherwise processed for spinning. Another common error is using HS code 5501.30, which is for modacrylic tow. Tow consists of continuous filament bundles, whereas 5506.30 is for discontinuous staple fibers. Additionally, if the fibers are considered waste, they should be classified under 5505.10.

FAQ

What is the HS code for Modacrylic staple fibers?

The HS code for modacrylic staple fibers that have been carded, combed, or otherwise processed for spinning is 5506.30.

How does modacrylic differ from standard acrylic in classification?

While both fall under the same subheadings in many parts of Chapter 55, modacrylic is specifically defined by its copolymer content (between 35% and 85% acrylonitrile), whereas acrylic must contain at least 85% acrylonitrile.