Chapter 25: 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
Browse official US Harmonized Tariff Schedule headings for this chapter.
2501Salt (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
2502Unroasted iron pyrites
2503Crude or unrefined sulfur
2504In powder or in flakes
2505Silica sands and quartz sands
2505.10.1000Natural sands of all kinds, whether or not colored, other than metalbearing sands of chapter 26: > Silica sands and quartz sands: > Sand containing by weight 95 percent or more of silica and not more than 0.6 percent of oxide of iron2505.10.5000Natural sands of all kinds, whether or not colored, other than metalbearing sands of chapter 26: > Silica sands and quartz sands: > Other2505.90.0000Natural sands of all kinds, whether or not colored, other than metalbearing sands of chapter 26: > Other
2506Quartz
2506.10.0010Quartz (other than natural sands); quartzite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: > Quartz > Sands (other than natural) containing by weight 95 percent or more of silica and not more than 0.6 percent of oxide of iron2506.10.0050Quartz (other than natural sands); quartzite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: > Quartz > Other2506.20.0010Quartz (other than natural sands); quartzite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: > Quartzite > Crude or roughly trimmed2506.20.0080Quartz (other than natural sands); quartzite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: > Quartzite > Other
2507Kaolin and other kaolinic clays, whether or not calcined
2508Bentonite
2508.10.0000Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths: > Bentonite2508.30.0000Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths: > Fire-clay2508.40.0110Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths: > Other clays > Common blue clay and other ball clays2508.40.0120Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths: > Other clays > Decolorizing earths and fuller's earth2508.40.0150Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths: > Other clays > Other2508.50.0000Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths: > Andalusite, kyanite and sillimanite2508.60.0000Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths: > Mullite2508.70.0000Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths: > Chamotte or dinas earth
2510Unground
2511Natural barium sulfate (barytes)
2511.10.1000Natural barium sulfate (barytes); natural barium carbonate (witherite), whether or not calcined, other than barium oxide of heading 2816: > Natural barium sulfate (barytes): > Ground2511.10.5000Natural barium sulfate (barytes); natural barium carbonate (witherite), whether or not calcined, other than barium oxide of heading 2816: > Natural barium sulfate (barytes): > Other2511.20.0000Natural barium sulfate (barytes); natural barium carbonate (witherite), whether or not calcined, other than barium oxide of heading 2816: > Natural barium carbonate (witherite)
2512Siliceous 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
2513Pumice stone
2513.10.0010Pumice; emery; natural corundum, natural garnet and other natural abrasives, whether or not heat-treated: > Pumice stone > Crude or in irregular pieces, including crushed pumice2513.10.0080Pumice; emery; natural corundum, natural garnet and other natural abrasives, whether or not heat-treated: > Pumice stone > Other2513.20.1000Pumice; emery; natural corundum, natural garnet and other natural abrasives, whether or not heat-treated: > Emery, natural corundum, natural garnet and other natural abrasives: > Crude or in irregular pieces2513.20.9000Pumice; emery; natural corundum, natural garnet and other natural abrasives, whether or not heat-treated: > Emery, natural corundum, natural garnet and other natural abrasives: > Other
2514Slate, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape
2515Crude or roughly trimmed
2515.11.0000Marble, travertine and other calcareous monumental or building stone of an apparent specific gravity of 2.5 or more, and alabaster, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: > Crude or roughly trimmed2515.12.1000Marble, travertine and other calcareous monumental or building stone of an apparent specific gravity of 2.5 or more, and alabaster, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: > Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: > Marble2515.12.2000Marble, travertine and other calcareous monumental or building stone of an apparent specific gravity of 2.5 or more, and alabaster, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: > Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: > Travertine2515.20.0000Marble, travertine and other calcareous monumental or building stone of an apparent specific gravity of 2.5 or more, and alabaster, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: > Other calcareous monumental or building stone; alabaster
2516Crude or roughly trimmed
2516.11.0000Granite, porphyry, basalt, sandstone and other monumental or building stone, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: > Crude or roughly trimmed2516.12.0030Granite, porphyry, basalt, sandstone and other monumental or building stone, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: > Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape > Having a thickness of 7.5 cm or more2516.12.0060Granite, porphyry, basalt, sandstone and other monumental or building stone, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: > Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape > Other2516.20.1000Granite, porphyry, basalt, sandstone and other monumental or building stone, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: > Sandstone: > Crude or roughly trimmed2516.20.2000Granite, porphyry, basalt, sandstone and other monumental or building stone, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: > Sandstone: > Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape2516.90.0030Granite, porphyry, basalt, sandstone and other monumental or building stone, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: > Other monumental or building stone > Having a thickness of 7.5 cm or more2516.90.0060Granite, porphyry, basalt, sandstone and other monumental or building stone, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: > Other monumental or building stone > Other
2517Pebbles, 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
2517.10.0015Pebbles, 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; macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in the first part of the heading; tarred macadam; granules, chippings and powder, of stones of heading 2515 or 2516, whether or not heat-treated: > 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 > Pebbles and gravel2517.10.0020Pebbles, 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; macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in the first part of the heading; tarred macadam; granules, chippings and powder, of stones of heading 2515 or 2516, whether or not heat-treated: > 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 > Limestone, except pebbles and gravel2517.10.0055Pebbles, 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; macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in the first part of the heading; tarred macadam; granules, chippings and powder, of stones of heading 2515 or 2516, whether or not heat-treated: > 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 > Other2517.20.0000Pebbles, 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; macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in the first part of the heading; tarred macadam; granules, chippings and powder, of stones of heading 2515 or 2516, whether or not heat-treated: > Macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in subheading 2517.102517.30.0000Pebbles, 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; macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in the first part of the heading; tarred macadam; granules, chippings and powder, of stones of heading 2515 or 2516, whether or not heat-treated: > Tarred macadam2517.41.0000Pebbles, 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; macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in the first part of the heading; tarred macadam; granules, chippings and powder, of stones of heading 2515 or 2516, whether or not heat-treated: > Of marble2517.49.0000Pebbles, 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; macadam of slag, dross or similar industrial waste, whether or not incorporating the materials cited in the first part of the heading; tarred macadam; granules, chippings and powder, of stones of heading 2515 or 2516, whether or not heat-treated: > Other
2518Dolomite, not calcined or sintered
2518.10.0000Dolomite, whether or not calcined or sintered, including dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: > Dolomite, not calcined or sintered2518.20.0000Dolomite, whether or not calcined or sintered, including dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: > Calcined or sintered dolomite
2519Natural magnesium carbonate (magnesite)
2519.10.0000Natural magnesium carbonate (magnesite); fused magnesia; dead-burned (sintered) magnesia, whether or not containing small quantities of other oxides added before sintering; other magnesium oxide, whether or not pure: > Natural magnesium carbonate (magnesite)2519.90.1000Natural magnesium carbonate (magnesite); fused magnesia; dead-burned (sintered) magnesia, whether or not containing small quantities of other oxides added before sintering; other magnesium oxide, whether or not pure: > Other: > Fused magnesia and dead-burned (sintered) magnesia2519.90.2000Natural magnesium carbonate (magnesite); fused magnesia; dead-burned (sintered) magnesia, whether or not containing small quantities of other oxides added before sintering; other magnesium oxide, whether or not pure: > Other: > Caustic calcined magnesite2519.90.5000Natural magnesium carbonate (magnesite); fused magnesia; dead-burned (sintered) magnesia, whether or not containing small quantities of other oxides added before sintering; other magnesium oxide, whether or not pure: > Other: > Other
2520Gypsum; anhydrite
2520.10.0000Gypsum; anhydrite; plasters (consisting of calcined gypsum or calcium sulfate) whether or not colored, with or without small quantities of accelerators or retarders: > Gypsum; anhydrite2520.20.0000Gypsum; anhydrite; plasters (consisting of calcined gypsum or calcium sulfate) whether or not colored, with or without small quantities of accelerators or retarders: > Plasters
2521Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement
2522Quicklime
2522.10.0000Quicklime, slaked lime and hydraulic lime, other than calcium oxide and hydroxide of heading 2825: > Quicklime2522.20.0000Quicklime, slaked lime and hydraulic lime, other than calcium oxide and hydroxide of heading 2825: > Slaked lime2522.30.0000Quicklime, slaked lime and hydraulic lime, other than calcium oxide and hydroxide of heading 2825: > Hydraulic lime
2523Cement clinkers
2523.10.0000Portland cement, aluminous cement, slag cement, supersulfate cement and similar hydraulic cements, whether or not colored or in the form of clinkers: > Cement clinkers2523.21.0000Portland cement, aluminous cement, slag cement, supersulfate cement and similar hydraulic cements, whether or not colored or in the form of clinkers: > White cement, whether or not artificially colored2523.29.0000Portland cement, aluminous cement, slag cement, supersulfate cement and similar hydraulic cements, whether or not colored or in the form of clinkers: > Other2523.30.0000Portland cement, aluminous cement, slag cement, supersulfate cement and similar hydraulic cements, whether or not colored or in the form of clinkers: > Aluminous cement2523.90.0000Portland cement, aluminous cement, slag cement, supersulfate cement and similar hydraulic cements, whether or not colored or in the form of clinkers: > Other hydraulic cements
2524Crocidolite (Blue)
2524.10.0000Asbestos: > Crocidolite (Blue)2524.90.0010Asbestos: > Other > Amosite2524.90.0030Asbestos: > Other > Crudes2524.90.0040Asbestos: > Other > Milled fibers, group 3 grades (spinning fibers or equivalent)2524.90.0045Asbestos: > Other > Milled fibers, group 4 and 5 grades2524.90.0055Asbestos: > Other > Other2524.90.0060Asbestos: > Other > Other
2525Crude mica and mica rifted into sheets or splittings
2525.10.0010Mica, including splittings; mica waste: > Crude mica and mica rifted into sheets or splittings > Split block mica2525.10.0020Mica, including splittings; mica waste: > Crude mica and mica rifted into sheets or splittings > Mica splittings2525.10.0050Mica, including splittings; mica waste: > Crude mica and mica rifted into sheets or splittings > Other2525.20.0000Mica, including splittings; mica waste: > Mica powder2525.30.0000Mica, including splittings; mica waste: > Mica waste
2526Not crushed, not powdered
2526.10.0000Natural steatite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape; talc: > Not crushed, not powdered2526.20.0000Natural steatite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape; talc: > Crushed or powdered
2528Natural sodium borates and concentrates thereof (whether or not calcined)
2528.00.0005Natural 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 H<sub>3</sub>BO<sub>3</sub> calculated on the dry weight > Natural sodium borates and concentrates thereof (whether or not calcined)2528.00.0010Natural 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 H<sub>3</sub>BO<sub>3</sub> calculated on the dry weight > Natural calcium borates2528.00.0050Natural 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 H<sub>3</sub>BO<sub>3</sub> calculated on the dry weight > Other
2529Feldspar
2529.10.0000Feldspar; leucite, nepheline and nepheline syenite; fluorspar: > Feldspar2529.21.0000Feldspar; leucite, nepheline and nepheline syenite; fluorspar: > Containing by weight 97 percent or less of calcium fluoride2529.22.0000Feldspar; leucite, nepheline and nepheline syenite; fluorspar: > Containing by weight more than 97 percent of calcium fluoride2529.30.0010Feldspar; leucite, nepheline and nepheline syenite; fluorspar: > Leucite; nepheline and nepheline syenite > Nepheline syenite2529.30.0050Feldspar; leucite, nepheline and nepheline syenite; fluorspar: > Leucite; nepheline and nepheline syenite > Other
2530Vermiculite, perlite and chlorites, unexpanded
2530.10.0000Mineral substances not elsewhere specified or included: > Vermiculite, perlite and chlorites, unexpanded2530.20.1000Mineral substances not elsewhere specified or included: > Kieserite, epsom salts (natural magnesium sulfates): > Kieserite2530.20.2000Mineral substances not elsewhere specified or included: > Kieserite, epsom salts (natural magnesium sulfates): > Epsom salts2530.90.1000Mineral substances not elsewhere specified or included: > Other: > Natural cryolite; natural chiolite2530.90.2000Mineral substances not elsewhere specified or included: > Other: > Natural micaceous iron oxides2530.90.8010Mineral substances not elsewhere specified or included: > Other: > Other > Celestite2530.90.8015Mineral substances not elsewhere specified or included: > Other: > Other > Earth colors2530.90.8050Mineral substances not elsewhere specified or included: > Other: > Other > Other