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HSChapter 28
U.S. imports of sodium silicate (excluding sodium metasilicate) (HS 283919) totaled $1.5M in April 2026, traded with 13 countries.
Importers of Sodium Silicate (Excluding Sodium Metasilicate) paid $41K in duties in April 2026 — an effective duty rate of 14% on $296K in dutiable value, based on actual customs collections rather than the published tariff schedule. Sodium Silicate (Excluding Sodium Metasilicate) imports of $1.5M in April 2026 ran 14% above the year-to-date monthly average of $1.3M.
Last updated: April 2026 dataSodium silicate solutions and solids with SiO₂:Na₂O ratios above the metasilicate threshold — commonly known as water glass or soluble glass — are widely used as adhesives, binders in foundry sand casting, paper and board coatings, and passive fire protection. Classified under 2839190000, this product is distinguished from sodium metasilicate (heading 283911) by its higher silica ratio. Canada leads US import supply, with Brazil and Poland also significant, reflecting proximity and established chemical production capacity.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Sodium silicate is imported as aqueous solution (liquid water glass), dried granules, or powder. All forms classify under 2839190000 provided the SiO₂:Na₂O ratio places them outside the metasilicate definition. Form does not change the HTS classification, but it affects freight mode (liquid shipments typically move in ISO tank containers or drums, while solid forms ship in bulk bags), which has practical implications for logistics planning and port handling.
Imports of sodium silicate originating in Canada and meeting USMCA rules-of-origin requirements are eligible for preferential tariff treatment under the United States-Mexico-Canada Agreement. Importers should obtain a USMCA certificate of origin from the Canadian supplier and retain it for the required record-keeping period.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CANADA | $1.1M | $788K | -$328K |
| MEXICO | $93K | $516K | +$423K |
| AUSTRALIA | -- | $86K | +$86K |
| PANAMA | -- | $85K | +$85K |
| NETHERLANDS | $56K | -- | -$56K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2839190000 | SILICATE OF SODIUM, EXC SODIUM METASILICATE, NESOI | $1.5M | 13.97% | $41K |
SILICATE OF SODIUM, EXC SODIUM METASILICATE, NESOI
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2839190000 | SILICATE OF SODIUM, EXC SODIUM METASILICATE | $1.8M |
SILICATE OF SODIUM, EXC SODIUM METASILICATE
1.7M 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 |
|---|---|---|---|
| Pennsylvania | $470K | $101K | -$369K |
| South Carolina | $504K | -- | -$504K |
| Ohio | $51K | $390K | +$339K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| TROUT RIVER, NY | $827K | -- | -$827K |
| LAREDO, TX | $93K | $466K | +$373K |
| PORT HURON, MI | -- | $474K | +$474K |