U.S. imports of Sodium Metasilicates (HS 283911) totaled $402K in August 2026, imported from 9 countries.
Importers of Sodium Metasilicates paid $83K in duties in August 2026, an average duty rate of 20.60% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 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.
23 import shipments a month
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.
ImportsExports
Imports
$402KYoY · free account
Exports
$243KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $4.6M of Sodium Metasilicates and exported $3.5M.
Fewer than 6 of the last 12 months reported trade, or the latest month was under $500K; the trend chart is not shown for thin series.
Through August 2026. Source: U.S. Census Bureau.
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Subheading 3 of 3 in heading 2839
Subheading 283911 · $402K of $3.1M
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 |
|---|---|---|---|---|---|
| 2839110000 | Sodium Metasilicates | $402K | 20.60% | 99.48% | $83K |
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 | $243K |
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 · August 2026
origin
China and Belgium together supply 66% of it. China pays 38.3% duty; Belgium 10.0%.
customs district
destination
entry
rate provision · imports
0.5% enters free of duty; duty collected equals 20.60% of imports for consumption.