Chapter 2510 — Customs Tariff Headings
Subheadings
Products classified under Tariff item 25.10
Christmas Island Phosphate Rock
Raw, unground phosphate rock sourced from Christmas Island guano deposits, high in P2O5 content. This natural calcium phosphate in lump form is classified under tariff item 2510.10.00 as unground natural calcium phosphates, intended for use in the phosphate chemical industry.
2510.10.00Natural Phosphatic Chalk Lumps
Unground lumps of phosphatic chalk, a soft calcareous material containing natural calcium phosphates. This product is covered under tariff item 2510.10.00 as unground phosphatic chalk, commonly used in soil amendment or as an animal feed supplement.
2510.10.00Nauru Island Unground Phosphorite
Unground phosphorite ore from Nauru raised atolls, a premium natural calcium phosphate source. This unprocessed phosphatic rock fits tariff item 2510.10.00 and is used in high-purity phosphoric acid production.
2510.10.00Raw Moroccan Phosphate Ore
Unground phosphate rock from Moroccan mines, primarily sedimentary apatite with high P2O5 content. This natural calcium phosphate in unprocessed, unground form falls under tariff item 2510.10.00 for use in phosphoric acid or fertilizer production.
2510.10.00Tennessee Brown Rock Phosphate
Unground brown rock phosphate from Tennessee deposits, rich in natural apatite for organic farming applications. Classified under tariff item 2510.10.00 as unground natural calcium phosphates, ideal for direct soil application.
2510.10.00Unground Florida Pebble Phosphate Rock
Natural calcium phosphate rock mined from Florida deposits, unground and in its raw form with less than 4% magnesium oxide content. Classified under tariff item 2510.10.00 as unground natural calcium phosphates, suitable for various industrial applications.
2510.20.00Fine Ground Christmas Island Phosphate
> Fine ground Christmas Island phosphate is a natural calcium phosphate derived from guano deposits, pulverized to a powder for use in organic farming. It is in a crude, ground state with no chemical alteration, qualifying under this tariff item for ground natural calcium phosphates.
2510.20.00Ground Apatite Ore
> Ground apatite ore is a natural calcium phosphate mineral pulverized for use in producing phosphoric acid and fertilizers. It is in a ground, crude state without further processing, placing it under this tariff item for ground natural calcium phosphates.
2510.20.00Ground Florida Pebble Phosphate
> Ground Florida pebble phosphate is a natural calcium phosphate from pebble deposits, milled for use in animal feed and fertilizer bases. The product is only ground, not chemically modified, so it falls under this tariff item for ground natural calcium phosphates.
2510.20.00Ground Moroccan Phosphate Rock
> Ground Moroccan phosphate rock is a high-grade natural calcium phosphate from mines, ground for fertilizer production. It is in a crude, ground state with no additional processing, qualifying under this tariff item for ground natural calcium phosphates.
2510.20.00Ground Natural Aluminum Calcium Phosphate
> Ground natural aluminum calcium phosphate is a milled phosphorite containing both calcium and aluminum phosphates, used in specialty fertilizers. The product is in a ground, crude state, and this tariff item explicitly covers ground forms of natural calcium and aluminum calcium phosphates.
2510.20.00Ground Phosphorite Rock
> Ground phosphorite rock is finely ground natural calcium phosphate from sedimentary deposits, used as a raw material in phosphate fertilizer production. It is in a crude, ground state without chemical processing, placing it under this tariff item for ground natural calcium phosphates.
2510.20.00Milled Phosphatic Chalk
> Milled phosphatic chalk is a ground natural calcium phosphate-rich sedimentary rock used in soil amendments. It is in a ground, crude state, and this tariff item explicitly includes ground phosphatic chalk, making it classifiable here.
2510.20.00Pulverized Phosphate Rock Flour
> Pulverized phosphate rock flour is ultra-fine ground natural calcium phosphate used as a slow-release fertilizer. It is in a ground, crude state with no chemical alteration, qualifying under this tariff item for ground natural calcium phosphates.