Base
HTS 2508Chapter 25

HTS 2508Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths: Duty Rate & Import Guide

Salt, Sulfur, Earths, Stone, Cement · 15 pending regulations · 15 court cases · $2.0M monthly imports · 100% from 1 countries · Updated daily from USITC

Duty Rates

General

Free

Special

Free

Column 2

Free

Trade Agreement Eligibility

CUSMAKORUS

Trade Intelligence

Monthly Imports

$2.0M

2026-01

Trade Concentration

100%

from top 3 of 1 origins

Regulatory Pressure

HIGH

0 rulings — · 15 reg · 9 CIT, 6 CAFC (1 recent)

Global Rates

🇺🇸 Free

🇬🇧 United Kingdom: N/A · 🇪🇺 European Union: N/A · 🇨🇦 Canada: N/A · 🇧🇷 Brazil: N/A

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Data compiled from USITC HTS, US Census Bureau, Federal Register, CourtListener · As of 2026-04-29 · Updates monthly

Active DisputesRecent court cases or pending regulations affect this code
Regulatory Pressure

This code has elevated regulatory activity — 0 CBP rulings (0 in last 2 years, trend: stable), 15 pending Federal Register actions, and 15 CIT/CAFC cases.

Supply Chain Risk

100% of US imports for this code come from just 1 countries. High origin concentration increases exposure to trade disruptions or tariff escalations.

Subheadings (9)

CodeDescriptionRate
2508.10.00.00BentoniteFree
2508.30.00.00Fire-clayFree
2508.40.01Other claysFree
2508.40.01.10Common blue clay and other ball clays
2508.40.01.20Decolorizing earths and fuller's earth
2508.40.01.50Other
2508.50.00.00Andalusite, kyanite and sillimaniteFree
2508.60.00.00MulliteFree
2508.70.00.00Chamotte or dinas earthFree

Federal Register (15)

View all 15+ regulations on Federal Register →

Court of International Trade & Federal Circuit (15)

View all 15+ cases on PACER →

Matching Export Code (Schedule B)

2508100000Schedule B

BENTONITE, WHETHER OR NOT CALCINED

Census Bureau export classification matching this HTS import code.

2505.90.00.002508.10.00.00