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U.S. imports of sodium metasilicates (HS 283911) totaled $479K in July 2026, traded with 9 countries.
Importers of Sodium Metasilicates paid $77K in duties in July 2026 — an effective duty rate of 16% on $475K in dutiable value, based on actual customs collections rather than the published tariff schedule. Sodium Metasilicates imports of $479K in July 2026 ran 22% above the year-to-date monthly average of $394K.
Last updated: July 2026 dataSodium metasilicate is a highly alkaline inorganic compound widely used as a cleaning and detergent builder, a cement accelerator, and a surface-treatment agent in industrial and institutional cleaning formulations. Classified under the single 10-digit line 2839110000, it is distinguished from other sodium silicates by its specific SiO₂-to-Na₂O molar ratio of approximately 1:1. Belgium leads US import supply, with China and Egypt also significant sources — a supplier mix that reflects both European chemical manufacturing and lower-cost production in North Africa and Asia.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
22 shipments/mo
Sodium metasilicate (heading 283911, line 2839110000) has a SiO₂:Na₂O ratio of approximately 1:1 and is typically sold as an anhydrous or pentahydrate powder. Sodium silicates with higher SiO₂:Na₂O ratios — commonly called water glass or soluble glass — classify under heading 283919 or 283990 depending on their specific composition. The ratio documented in the product specification sheet is the key classification determinant.
The primary demand drivers are industrial and institutional cleaning product manufacturers, who use sodium metasilicate as an alkaline builder and corrosion inhibitor in machine dishwashing, laundry, and hard-surface cleaners. Secondary uses include concrete and mortar admixtures (as a set accelerator), metal surface treatment, and fireproofing applications. Demand tends to track industrial production activity and cleaning-product formulation trends rather than seasonal cycles.
HSChapter 28
Subheading 3 of 3 in heading 2839
Subheading 283911 · $479K of $3.7M
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ImportsExports
Imports
$479KYoY · Pro
Exports
$338KYoY · Pro
12-mo low · imports
YoY · ProFewer than 6 of the last 12 months reported trade above $500K; the trend chart is not shown for thin series.
Through 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 |
|---|---|---|---|---|---|
| 2839110000 | Sodium Metasilicates | $479K | 15.98% | 99.17% | $77K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2839110000 | Sodium Metasilicates | $338K |
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
Belgium and Japan together supply 70% of it.
customs district
destination
entry
rate provision · imports
0.8% enters free of duty; the effective duty rate is 15.98%.