Chapter 25Mineral Products
Salt, Sulfur & Stone — US Tariff Rates
US tariff rates for salt, sulfur, earths, stone, plaster, cement, and similar minerals. HTS codes and import duties for construction and industrial minerals.
HTS Codes
79
2024 Imports
$28.9B
Top Supplier
TOTAL FOR ALL COUNTRIES
Source Countries
1954
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Additional Tariffs Apply to This Chapter
Section 301 tariffs apply to imports from China. Use our Landed Cost Calculator for a full duty breakdown by country of origin.
HTS Codes in Chapter 25 — Salt, Sulfur & Stone
| HTS Code | Description | Base Duty | Tariff Flags | Actions |
|---|---|---|---|---|
| 2501.00.00.00 | Salt (including table salt and denatured salt) and pure sodium chloride, whether or not in aqueous solution or containing added anti-caking or free-flowing agents; sea water | Free | §301 +25%§122 +15% | |
| 2502.00.00.00 | Unroasted iron pyrites | Free | §301 +25%§122 +15% | |
| 2503.00.00 | Sulfur of all kinds, other than sublimed sulfur, precipitated sulfur and colloidal sulfur | Free | §301 +25%§122 +15% | |
| 2504.10.10.00 | Crystalline flake (not including flake dust) | Free | §301 +25%§122 +15% | |
| 2504.10.50.00 | Other | Free | §301 +25%§122 +15% | |
| 2504.90.00.00 | Other | Free | §301 +25%§122 +15% | |
| 2505.10.10.00 | Sand containing by weight 95 percent or more of silica and not more than 0.6 percent of oxide of iron | Free | §301 +25%§122 +15% | |
| 2505.10.50.00 | Other | Free | §301 +25%§122 +15% | |
| 2505.90.00.00 | Other | Free | §301 +25%§122 +15% | |
| 2506.10.00 | Quartz | Free | §301 +25%§122 +15% | |
| 2506.20.00 | Quartzite | Free | §301 +25%§122 +15% | |
| 2507.00.00.00 | Kaolin and other kaolinic clays, whether or not calcined | Free | §301 +25%§122 +15% | |
| 2508.10.00.00 | Bentonite | Free | §301 +25%§122 +15% | |
| 2508.30.00.00 | Fire-clay | Free | §301 +25%§122 +15% | |
| 2508.40.01 | Other clays | Free | §301 +25%§122 +15% | |
| 2508.50.00.00 | Andalusite, kyanite and sillimanite | Free | §301 +25%§122 +15% | |
| 2508.60.00.00 | Mullite | Free | §301 +25%§122 +15% | |
| 2508.70.00.00 | Chamotte or dinas earth | Free | §301 +25%§122 +15% | |
| 2509.00.10.00 | Crude | Free | §301 +25%§122 +15% | |
| 2509.00.20.00 | Other | Free | §301 +25%§122 +15% | |
| 2510.10.00.00 | Unground | Free | §301 +25%§122 +15% | |
| 2510.20.00.00 | Ground | Free | §301 +25%§122 +15% | |
| 2511.10.10.00 | Ground | Free | §301 +25%§122 +15% | |
| 2511.10.50.00 | Other | $1.25/t | §301 +25%§122 +15% | |
| 2511.20.00.00 | Natural barium carbonate (witherite) | Free | §301 +25%§122 +15% | |
| 2512.00.00.00 | Siliceous fossil meals (for example, kieselguhr, tripolite and diatomite) and similar siliceous earths, whether or not calcined, of an apparent specific gravity of 1 or less | Free | §301 +25%§122 +15% | |
| 2513.10.00 | Pumice stone | Free | §301 +25%§122 +15% | |
| 2513.20.10.00 | Crude or in irregular pieces | Free | §301 +25%§122 +15% | |
| 2513.20.90.00 | Other | Free | §301 +25%§122 +15% | |
| 2514.00.00.00 | Slate, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape | Free | §301 +25%§122 +15% | |
| 2515.11.00.00 | Crude or roughly trimmed | Free | §301 +25%§122 +15% | |
| 2515.12.10.00 | Marble | Free | §301 +25%§122 +15% | |
| 2515.12.20.00 | Travertine | 3% | §301 +25%§122 +15% | |
| 2515.20.00.00 | Other calcareous monumental or building stone; alabaster | 3% | §301 +25%§122 +15% | |
| 2516.11.00.00 | Crude or roughly trimmed | Free | §301 +25%§122 +15% | |
| 2516.12.00 | Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape | 2.8% | §301 +25%§122 +15% | |
| 2516.20.10.00 | Crude or roughly trimmed | Free | §301 +25%§122 +15% | |
| 2516.20.20.00 | Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape | 3% | §301 +25%§122 +15% | |
| 2516.90.00 | Other monumental or building stone | 3% | §301 +25%§122 +15% | |
| 2517.10.00 | Pebbles, gravel, broken or crushed stone, of a kind commonly used for concrete aggregates, for road metalling, or for railway or other ballast, shingle and flint, whether or not heat-treated | Free | §301 +25%§122 +15% | |
| 2517.20.00.00 | Macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in subheading 2517.10 | Free | §301 +25%§122 +15% | |
| 2517.30.00.00 | Tarred macadam | Free | §301 +25%§122 +15% | |
| 2517.41.00.00 | Of marble | Free | §301 +25%§122 +15% | |
| 2517.49.00.00 | Other | Free | §301 +25%§122 +15% | |
| 2518.10.00.00 | Dolomite, not calcined or sintered | Free | §301 +25%§122 +15% | |
| 2518.20.00.00 | Calcined or sintered dolomite | 3% | §301 +25%§122 +15% | |
| 2519.10.00.00 | Natural magnesium carbonate (magnesite) | Free | §301 +25%§122 +15% | |
| 2519.90.10.00 | Fused magnesia and dead-burned (sintered) magnesia | Free | §301 +25%§122 +15% | |
| 2519.90.20.00 | Caustic calcined magnesite | Free | §301 +25%§122 +15% | |
| 2519.90.50.00 | Other | Free | §301 +25%§122 +15% | |
| 2520.10.00.00 | Gypsum; anhydrite | Free | §301 +25%§122 +15% | |
| 2520.20.00.00 | Plasters | Free | §301 +25%§122 +15% | |
| 2521.00.00.00 | Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement | Free | §301 +25%§122 +15% | |
| 2522.10.00.00 | Quicklime | Free | §301 +25%§122 +15% | |
| 2522.20.00.00 | Slaked lime | Free | §301 +25%§122 +15% | |
| 2522.30.00.00 | Hydraulic lime | Free | §301 +25%§122 +15% | |
| 2523.10.00.00 | Cement clinkers | Free | §301 +25%§122 +15% | |
| 2523.21.00.00 | White cement, whether or not artificially colored | Free | §301 +25%§122 +15% | |
| 2523.29.00.00 | Other | Free | §301 +25%§122 +15% | |
| 2523.30.00.00 | Aluminous cement | Free | §301 +25%§122 +15% | |
| 2523.90.00.00 | Other hydraulic cements | Free | §301 +25%§122 +15% | |
| 2524.10.00.00 | Crocidolite (Blue) | Free | §301 +25%§122 +15% | |
| 2524.90.00 | Other | Free | §301 +25%§122 +15% | |
| 2525.10.00 | Crude mica and mica rifted into sheets or splittings | Free | §301 +25%§122 +15% | |
| 2525.20.00.00 | Mica powder | Free | §301 +25%§122 +15% | |
| 2525.30.00.00 | Mica waste | Free | §301 +25%§122 +15% | |
| 2526.10.00.00 | Not crushed, not powdered | Free | §301 +25%§122 +15% | |
| 2526.20.00.00 | Crushed or powdered | Free | §301 +25%§122 +15% | |
| 2528.00.00 | Natural borates and concentrates thereof (whether or not calcined), but not including borates separated from natural brine; natural boric acid containing not more than 85 percent of H3BO3 calculated on the dry weight | Free | §301 +25%§122 +15% | |
| 2529.10.00.00 | Feldspar | Free | §301 +25%§122 +15% | |
| 2529.21.00.00 | Containing by weight 97 percent or less of calcium fluoride | Free | §301 +25%§122 +15% | |
| 2529.22.00.00 | Containing by weight more than 97 percent of calcium fluoride | Free | §301 +25%§122 +15% | |
| 2529.30.00 | Leucite; nepheline and nepheline syenite | Free | §301 +25%§122 +15% | |
| 2530.10.00.00 | Vermiculite, perlite and chlorites, unexpanded | Free | §301 +25%§122 +15% | |
| 2530.20.10.00 | Kieserite | Free | §301 +25%§122 +15% | |
| 2530.20.20.00 | Epsom salts | Free | §301 +25%§122 +15% | |
| 2530.90.10.00 | Natural cryolite; natural chiolite | Free | §301 +25%§122 +15% | |
| 2530.90.20.00 | Natural micaceous iron oxides | 2.9% | §301 +25%§122 +15% | |
| 2530.90.80 | Other | Free | §301 +25%§122 +15% |
Related HTS Chapters
About HTS Chapter 25 — Salt, Sulfur & Stone
HTS Chapter 25 covers salt, sulfur & stone under the US Harmonized Tariff Schedule (HTS). The HTS is maintained by the US International Trade Commission (USITC) and updated periodically to reflect trade policy changes including executive orders, Section 232 national security tariffs, Section 301 China tariffs, and Section 122 emergency tariffs.
To import goods under Chapter 25, US importers must declare the correct 10-digit HTS code on their Customs entry. The duty rate shown is the general (MFN) rate. Special rates may apply under free trade agreements (FTAs) such as USMCA, CPTPP, or bilateral agreements. Use the FTA Checker to see if preferential rates apply to your shipment.
Anti-dumping (AD) and countervailing duty (CVD) orders may impose additional duties on specific products and countries of origin beyond the rates shown here. Always consult with a licensed customs broker for classification decisions.