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HSChapter 28
U.S. imports of disodium tetraborate (hydrated borax), except anhydrous (HS 284019) totaled $6.4M in April 2026, traded with 9 countries.
Importers of Disodium Tetraborate (Hydrated Borax), Except Anhydrous paid $656K in duties in April 2026 — an effective duty rate of 10% on $6.4M in dutiable value, based on actual customs collections rather than the published tariff schedule. Disodium Tetraborate (Hydrated Borax), Except Anhydrous imports of $6.4M in April 2026 ran 32% above the year-to-date monthly average of $4.8M.
Last updated: April 2026 dataHydrated forms of disodium tetraborate — commonly known as borax — are a foundational boron source for glass fiber, ceramics, and agricultural micronutrient applications. Turkey dominates global supply of this mineral, reflecting its vast borate ore reserves, with Guatemala and Italy also among the leading US import sources. Classified under a single 10-digit line (2840190000), the heading excludes anhydrous disodium tetraborate, making the hydration state the critical classification distinction at entry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The key is water of crystallization: hydrated forms (e.g., borax decahydrate and pentahydrate) fall under 284019, while the anhydrous form is classified separately. Importers should confirm the product's water content via the supplier's certificate of analysis before filing entry.
Turkey holds some of the world's largest commercially exploitable borate ore deposits, giving Turkish producers a significant cost and volume advantage. This concentration means US buyers in glass fiber and ceramics industries closely monitor Turkish export policy and logistics disruptions.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2840190000 | DISODIUM TETRABORATE, EXC ANHYDROUS, NESOI | $6.4M | 10.24% | $656K |
DISODIUM TETRABORATE, EXC ANHYDROUS, NESOI
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2840190000 | DISODIUM TETRABORATE, EXCEPT ANHYDROUS | $30.6M |
DISODIUM TETRABORATE, EXCEPT ANHYDROUS
51.4M 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 |
|---|---|---|---|
| California | $5K | $30.5M | +$30.5M |
| Georgia | $4.6M | -- | -$4.6M |
| Texas | $983K | -- | -$983K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LOS ANGELES, CA | $5K | $24.4M | +$24.4M |
| SAVANNAH, GA | $4.6M | -- | -$4.6M |
| LONG BEACH, CA | $4K | $4.5M | +$4.5M |