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HSChapter 25
U.S. imports of natural barium sulfate (barytes) (HS 251110) totaled $10.4M in April 2026, traded with 13 countries.
Importers of Natural Barium Sulfate (Barytes) paid $37K in duties in April 2026 — an effective duty rate of 2.3% on $1.6M in dutiable value, based on actual customs collections rather than the published tariff schedule. Natural Barium Sulfate (Barytes) imports of $10.4M in April 2026 ran 49% below the year-to-date monthly average of $20.4M.
Last updated: April 2026 dataBarytes — the naturally occurring mineral form of barium sulfate — is a high-density, chemically inert industrial mineral whose dominant use is as a weighting agent in oil and gas drilling fluids, where its specific gravity is critical to wellbore pressure control. The US tariff schedule distinguishes ground barytes (2511101000) from unground material (2511105000), reflecting the significant value-add of milling to API-grade particle specifications required by the drilling industry. Importers should be aware that API Specification 13A sets the purity and particle-size standards that determine whether a shipment qualifies for drilling-grade pricing.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Drilling-grade barytes must conform to API Specification 13A, which sets minimum specific gravity (typically 4.20 g/cm³), maximum soluble alkaline earth metals, and particle-size distribution requirements. Material that does not meet these thresholds is typically redirected to paint, coatings, or rubber applications.
Ground barytes (2511101000) and unground barytes (2511105000) are assessed separately under the US tariff schedule. Since grinding to API-grade specification is a substantial processing step, importers should ensure the product's physical form and particle-size documentation align with the declared tariff line to avoid reclassification at the port of entry.
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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 |
|---|---|---|---|---|
| 2511105000 | NATURAL BARIUM SULFATE (BARYTES) EXCEPT GROUND | $5.3M | 2.31% | $36K |
| 2511101000 | NATURAL BARIUM SULFATE (BARYTES) GROUND | $5.1M | 10.00% | $576 |
NATURAL BARIUM SULFATE (BARYTES) EXCEPT GROUND
NATURAL BARIUM SULFATE (BARYTES) GROUND
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2511100000 | NATURAL BARIUM SULFATE (BARYTES) | $1.6M |
NATURAL BARIUM SULFATE (BARYTES)
8.8K t
PORTLAND CEMENT EXCEPT WHITE PORTLAND CEMENT
HS 252329
SULFUR OF ALL KINDS, NOT SUBLIMED,PRECIP,COLLOIDAL
HS 250300
SALT INCL TBL/DENTRD, PURE SODM CHLOR ETC; SEA WTR
HS 250100
UNGRND NAT CAL PHSPH, ALUM CAL PHOS A PHOS CHALK
HS 251010
FLUORSPAR OV 97% OF CALCIUM FLUORD BY WGHT
HS 252922
PEBBLES, GRAVEL ETC. FOR CONCRETE AGGREGATES ETC.
HS 251710
| Port | Imports | Exports | Balance |
|---|---|---|---|
| HOUSTON, TX | $3.8M | $21K | -$3.8M |
| DEL RIO, TX | $1.8M | -- | -$1.8M |
| LAKE CHARLES, LA | $1.7M | -- | -$1.7M |