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HSChapter 28
U.S. imports of sodium silicate (excluding sodium metasilicate) (HS 283919) totaled $1.8M in July 2026, traded with 17 countries.
Importers of Sodium Silicate (Excluding Sodium Metasilicate) paid $60K in duties in July 2026 — an effective duty rate of 11% on $573K in dutiable value, based on actual customs collections rather than the published tariff schedule. Sodium Silicate (Excluding Sodium Metasilicate) imports of $1.8M in July 2026 ran 26% above the year-to-date monthly average of $1.4M.
Last updated: July 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.
78 shipments/mo
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.
Subheading 1 of 3 in heading 2839
Subheading 283919 · $1.8M of $3.7M
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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 |
|---|---|---|---|---|---|
| 2839190000 | Silicate of Sodium, Exc Sodium Metasilicate, NESOI | $1.8M | 3.30% | 31.41% | $60K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2839190000 | Silicate of Sodium, Exc Sodium Metasilicate | $1.4M |
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.
ImportsExports
Imports
$1.8MYoY · Pro
Exports
$1.4MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Canada and India together supply 70% of it.
customs district
destination
entry
rate provision · imports
68.6% enters free of duty; the effective duty rate is 3.30%.