U.S. exports of Synthetic Filament Tow, Acrylic or Modacrylic (HS 550130) totaled $922K in August 2026.
Importers of Synthetic Filament Tow, Acrylic or Modacrylic paid $157K in duties in August 2026, an average duty rate of 15.16% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Synthetic Filament Tow, Acrylic or Modacrylic imports of $658K in August 2026 ran 47% below the year-to-date monthly average of $1.2M.
Last updated: August 2026 dataAcrylic and modacrylic filament tow is the primary precursor for cut-staple acrylic fiber used in knitwear, blankets, and flame-retardant textiles, with modacrylic variants valued specifically for their inherent fire resistance. The US schedule subdivides this heading: line 5501300010 captures tow containing 92% or more acrylonitrile or separable tow, while 5501300090 covers other acrylic and modacrylic tow. Japan, Thailand, and South Korea are the leading suppliers, reflecting the concentration of large-scale acrylic fiber production capacity in East Asia.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
13 import shipments a month
Tow containing 92% or more acrylonitrile by weight, or tow that is separable into individual filaments, is classified under 5501300010, while all other acrylic or modacrylic tow falls under 5501300090. Importers should obtain a fiber composition certificate from the manufacturer to ensure the correct 10-digit line is declared.
Modacrylic fibers contain between 35% and 85% acrylonitrile copolymerized with other monomers (often vinyl chloride or vinylidene chloride), giving them inherent flame retardancy that standard acrylic lacks. End-users in protective apparel and children's sleepwear markets specify modacrylic content, so suppliers typically provide detailed polymer composition data alongside shipments.
Subheading 2 of 6 in heading 5501
Subheading 550130 · $922K of $6.0M
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ImportsExports
Imports
$658KYoY · free account
Exports
$922KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $15.5M of Synthetic Filament Tow, Acrylic or Modacrylic and exported $7.1M.
Through August 2026 · exports 10 of 12 months reported. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 5501300010 | Syntic Filmt Tow 92% Acrylontrile or Seperable Tow | $832K | 15.81% | 100.00% | $131K |
| 5501300090 | Synthetic Filament Tow Acrylic or Modacrylc, NESOI | $202K | 12.50% | 100.00% | $25K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 5501300000 | Synthetic Filament Tow Acrylic or Modacrylic | $922K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Exports · August 2026
destination
United Kingdom and Germany together take 100% of it.
customs district
origin
entry
rate provision · imports
duty collected equals 15.16% of imports for consumption.