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HSChapter 28
U.S. imports of sodium metasilicates (HS 283911) totaled $445K in April 2026, traded with 9 countries.
Importers of Sodium Metasilicates paid $92K in duties in April 2026 — an effective duty rate of 21% on $445K in dutiable value, based on actual customs collections rather than the published tariff schedule. Sodium Metasilicates imports of $445K in April 2026 ran 24% above the year-to-date monthly average of $359K.
Last updated: April 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.
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.
Monthly import values over time
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HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2839110000 | SODIUM METASILICATES | $445K | 20.65% | $92K |
SODIUM METASILICATES
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2839110000 | SODIUM METASILICATES | $241K |
SODIUM METASILICATES
96.8K kg
URANIUM ENRICHED IN U235 ETC. PLUTONIUM ETC.
HS 284420
NATURAL URANIUM & COMPOUNDS, ALLOYS & CERAMICS ETC
HS 284410
ANHYDROUS AMMONIA
HS 281410
ALLOYS, DISPERSIONS,ISOTOPES & COMPOUNDS NES
HS 284443
SILICON, UNDER 99.99% (BY WEIGHT) SILICON
HS 280469
PHOSPHORIC ACID AND POLYPHOSPHORIC ACIDS
HS 280920
| State | Imports | Exports | Balance |
|---|---|---|---|
| New Jersey | $143K | $9K | -$134K |
| Illinois | $44K | $66K | +$22K |
| California | $90K | -- | -$90K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NEWARK, NJ | $213K | -- | -$213K |
| HOUSTON, TX | $62K | $8K | -$53K |
| LOS ANGELES, CA | $70K | -- | -$70K |