U.S. imports of Double or Complex Silicates, Including Aluminosilicates (HS 284210) totaled $11.4M in August 2026, imported from 22 countries.
Importers of Double or Complex Silicates, Including Aluminosilicates paid $1.7M in duties in August 2026, an average duty rate of 15.12% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataDouble and complex silicates — including synthetic zeolites and aluminosilicates used as molecular sieves, detergent builders, and catalyst supports — are widely traded industrial minerals classified under a single 10-digit line (2842100000). Germany leads US import supply for this heading, reflecting that country's strength in specialty chemical and zeolite manufacturing, with China and Canada also significant sources. The heading's breadth means classification disputes can arise when distinguishing natural mineral silicates (which may fall elsewhere) from synthetic complex silicates covered here.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
190 import shipments a month
Synthetic zeolites with a defined, reproducible crystal structure and controlled Si/Al ratio are generally classified under 2842100000 as complex aluminosilicates. Natural zeolite minerals (e.g., clinoptilolite) are typically classified under Chapter 25 as mineral substances. The key evidence is the manufacturing process and product specification sheet; a synthetic origin confirmed by the supplier supports classification here.
Zeolite A (sodium aluminosilicate) replaced phosphates as a detergent builder in many formulations due to environmental regulations on phosphate discharge. Demand tracks laundry detergent production cycles and reformulation activity. Importers supplying detergent manufacturers should anticipate volume spikes tied to new product launches or phosphate regulation changes in key markets.
ImportsExports
Imports
$11.4MYoY · free account
Exports
$4.8MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $132.1M of Double or Complex Silicates, Including Aluminosilicates and exported $77.7M.
Through August 2026. Source: U.S. Census Bureau.
Subheading 2 of 2 in heading 2842
Subheading 284210 · $11.4M of $40.7M
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 |
|---|---|---|---|---|---|
| 2842100000 | Double or Complex Silicates | $11.4M | 15.12% | 78.77% | $1.7M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2842100000 | Double or Complex Silicates, Incl Aluminosilicates | $4.8M |
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.
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Imports · August 2026
origin
Germany and China together supply 57% of it. China pays 41.2% duty; Canada 0.0%.
customs district
destination
entry
rate provision · imports
21.2% enters free of duty; duty collected equals 15.12% of imports for consumption.