Loading...
U.S. imports of aluminum hydroxide (HS 281830) totaled $25.2M in July 2026, traded with 21 countries.
Importers of Aluminum Hydroxide paid $1.6M in duties in July 2026 — an effective duty rate of 11% on $14.5M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataAluminum hydroxide — also called ATH (alumite trihydrate) in industrial trade — functions as both a flame retardant filler in plastics and rubber and as the primary precursor to alumina in the Bayer refining process. Brazil and Germany are the leading US suppliers under tariff line 2818300000, with Jamaica and Canada also significant sources. The product's dual role as a chemical intermediate and a functional additive means buyers must specify purity grade and particle-size distribution carefully, as these parameters drive classification and pricing. Canada's participation in USMCA can affect duty treatment for shipments originating there.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
251 shipments/mo
Aluminum hydroxide (Al(OH)₃) retains chemically bound water molecules and classifies under HTS 2818.30, while aluminum oxide (Al₂O₃) is the anhydrous or calcined form under 2818.20. The distinction matters because processing conditions — particularly calcination temperature — determine which form is present, and misclassification between the two headings is a common audit finding.
The largest demand segments are flame-retardant compounding (plastics, wire and cable insulation, rubber), paper coating and filling, and water treatment chemicals. Pharmaceutical-grade aluminum hydroxide used as an antacid active ingredient is a smaller but distinct market segment with separate quality specifications.
HSChapter 28
Supplier Network
Get discovered by U.S. importers searching for HS 281830 — Aluminum Hydroxide. Be the first supplier listed.
Subheading 2 of 3 in heading 2818
Subheading 281830 · $25.2M of $93.1M
ImportsExports
Imports
$25.2MYoY · Pro
Exports
$16.8MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. 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 | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2818300000 | Aluminum Hydroxide | $25.2M | 6.34% | 57.57% | $1.6M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2818300000 | Aluminum Hydroxide | $16.8M |
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.
Imports · July 2026
origin
Brazil and Germany together supply 48% of it.
customs district
destination
entry
rate provision · imports
28.9% enters free of duty; the effective duty rate is 6.34%.