Sulphur of all kinds, other than sublimed sulphur, precipitated sulphur and colloidal sulphur.
Sulphur of all kinds, other than sublimed sulphur, precipitated sulphur and colloidal sulphur. > Sulphur of all kinds, other than sublimed sulphur, precipitated sulphur and colloidal sulphur.
Duty Rate (from China)
Products classified under Tariff item 2503.00.00.00
Bolivian Huari Huari Sulfur
High-purity native sulfur from the Huari Huari mine in Bolivia, hand-collected from high-altitude lagoons. The sulfur is in a crude state with minimal processing, and it is not sublimed, precipitated, or colloidal, so it is classifiable under 2503.00.00.
2503.00.00Bulk Crushed Sulfur Rock
Bulk crushed sulfur rock, mined and crushed from native sulfur deposits, used directly in sulfuric acid production. The crushing process is a permitted mechanical treatment under Chapter 25 Note 1, and the product is not sublimed, precipitated, or colloidal sulfur, so it falls under tariff item 2503.00.00.
2503.00.00Bulk Lump Sulfur from Mines
Irregular lumps of native sulfur mined from surface outcrops, typically 99% pure with rock inclusions. This crude form of sulfur has not been sublimed, precipitated, or subjected to any processing beyond washing or crushing, and therefore falls under tariff item 2503.00.00.
2503.00.00Caprock Native Sulfur
Native sulfur extracted from limestone caprock formations above salt domes, mined via conventional methods. This crude sulfur is not sublimed or precipitated and is classified under tariff item 2503.00.00 as other non-sublimed, non-precipitated sulfur.
2503.00.00Crude Native Sulfur Ore
Raw sulfur extracted from natural volcanic deposits or caprock formations, containing impurities like dirt and moisture. This unrefined sulfur of natural origin is not sublimed or precipitated, and is classified under tariff item 2503.00.00.
2503.00.00Crude Natural Sulfur Ore
Crude natural sulfur ore extracted from volcanic or underground deposits, containing impurities like soil and moisture. It is in a crude state with no processing beyond washing or mechanical separation, consistent with Chapter 25 Note 1, and is not an excluded form, so it is classifiable under 2503.00.00.
2503.00.00Frasch Process Crude Sulfur
Yellowish sulfur blocks mined via the Frasch hot-water process from underground domes, unrefined with minor impurities. The product is crude sulfur, not sublimed, precipitated, or colloidal, and the mining process is a physical extraction, so it falls under 2503.00.00.
2503.00.00Frasch Process Sulfur
Molten sulfur extracted via the Frasch process and solidified into blocks, a natural mining method. The product is crude sulfur, not subjected to sublimation, precipitation, or colloidal processing, and the solidification is not a prohibited process, so it is covered by 2503.00.00.
2503.00.00Mexican Tehuacán Sulfur
Native sulfur blocks from geothermal activity near Tehuacán, Mexico, used primarily in agricultural dusting. This crude, unprocessed variety is not sublimed or precipitated, and is classified under tariff item 2503.00.00.
2503.00.00Native Crude Sulfur Ore
Raw sulfur extracted directly from volcanic deposits or caprock formations, containing impurities like soil and rock. The ore is in a crude state with no processing beyond extraction, and it is not an excluded form, so it is classifiable under 2503.00.00.
2503.00.00Native Lump Sulfur
Large irregular lumps of elemental sulfur mined from caprock deposits, unrefined and suitable for crushing. The lumps are in a crude state with no processing beyond mining, and they are not sublimed, precipitated, or colloidal, so they fall under 2503.00.00.
2503.00.00Natural Sulfur Pebbles
Small, rounded natural sulfur pebbles collected from sedimentary deposits, suitable for industrial grinding. These unprocessed forms of sulfur are not sublimed or precipitated, and are classified under tariff item 2503.00.00.
2503.00.00Natural Sulfur Prills
Small spherical prills of native sulfur formed during natural cooling from molten extraction, minimally processed. The prilling is a physical process that does not change the sulfur's structure, and the product is not sublimed or precipitated, so it is classifiable under 2503.00.00.
2503.00.00Polish Native Sulfur Lumps
Native sulfur lumps from Polish Carpathian deposits, valued for low impurity profile in fertilizer production. This European crude sulfur source is not sublimed or precipitated, and is classified under tariff item 2503.00.00.
2503.00.00Raw Mined Sulfur Lumps
Large irregular lumps of crude sulfur from open-pit mining operations, uncrushed and unrefined. The lumps are in a crude state with no processing beyond mining, and they are not sublimed, precipitated, or colloidal, so they fall under 2503.00.00.
2503.00.00Raw Sicilian Sulfur
Traditional native sulfur from Mount Etna region in Sicily, historically mined via burning process but now crude. This crude sulfur is not sublimed or precipitated, and is classified under tariff item 2503.00.00.
2503.00.00Raw Sulfur Blocks
Large cast blocks of molten natural sulfur cooled in molds from Frasch recovery, unrefined. The casting is a simple cooling process, not a chemical change, and the sulfur is not sublimed, precipitated, or colloidal, so it falls under 2503.00.00.
2503.00.00Recovered Frasch Process Sulfur
Yellow solid sulfur blocks recovered via the Frasch hot-water mining method from underground Gulf Coast salt domes. This crude sulfur is not further refined and is distinct from precipitated forms, and is classified under tariff item 2503.00.00.
2503.00.00Recovered Sulfur from Sour Gas
Elemental sulfur recovered as a byproduct from natural gas desulfurization via the Claus process, in flake or prill form. The recovery process is not sublimation, precipitation, or colloidal processing, and the product is in a crude state, so it is classifiable under 2503.00.00.
2503.00.00Sulfur Sand from Salt Domes
Fine-grained sulfur sand recovered from salt dome deposits via mining, a natural form of elemental sulfur. The sand is in a crude state with no processing beyond mining and screening, and it is not sublimed, precipitated, or colloidal, so it falls under 2503.00.00.
2503.00.00Unrefined Recovered Sulfur Slabs
Crude sulfur slabs recovered as a byproduct from natural gas purification, minimally processed. The slabs are in a crude state, not sublimed, precipitated, or colloidal, and the recovery process is physical, so they are classifiable under 2503.00.00.
2503.00.00Volcanic Crater Crude Sulfur
Impure sulfur crystals harvested from active volcanic craters, in raw lump form. The crystals are in a crude natural state with no processing beyond collection, and they are not sublimed, precipitated, or colloidal, so they fall under 2503.00.00.
2503.00.00Volcanic Sulfur Crystals
Bright yellow crystalline sulfur formed around volcanic fumaroles, hand-collected with minimal processing. The crystals are in a crude natural state, not sublimed, precipitated, or colloidal, and are not subjected to any prohibited processing, so they are classifiable under 2503.00.00.