Chalk.
Other clays (not including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths. > Chalk. > Chalk.
Duty Rate (from China)
Subheadings
Products classified under Tariff item 2509.00
Bulgarian Soft Chalk Lumps
Friable, soft lumps of natural chalk from Bulgarian deposits, valued for high whiteness in paper filler applications. Remains crude as it is neither powdered nor calcined post-mining, and is not processed beyond the crude state permitted by Chapter 25 Note 1.
2509.00.00Bulk Natural Chalk for Animal Feed
Coarse natural chalk grit used as a calcium supplement in poultry and livestock feed formulations. This unprocessed chalk remains under tariff item 2509.00.00 as it is not subjected to processing beyond crushing or grinding, which is permitted by Chapter 25 Note 1.
2509.00.00Chalk Filler for Cement Production
Ground natural chalk used as a functional filler in Portland cement manufacturing to adjust composition. This industrial 'other' chalk falls under tariff item 2509.00.00, as it is processed only by grinding, which is permitted under Chapter 25 Note 1.
2509.00.00Chalk for Glass Manufacturing
High-purity natural chalk selected for silica adjustment in specialty glass production. This industrial raw material chalk is classified under tariff item 2509.00.00, as it is not processed beyond washing or grinding, which is allowed by Chapter 25 Note 1.
2509.00.00Chalk Ore Concentrate
Concentrated natural chalk ore after basic washing and sizing, but before fine grinding, for further processing. This minimally processed 'other' chalk falls under tariff item 2509.00.00, as washing and sizing are permitted by Chapter 25 Note 1.
2509.00.00Chalk Powder for Industrial Fillers
Finely ground natural chalk powder (calcium carbonate) used as a filler in paints, plastics, and rubber manufacturing. This 'other' chalk is classified under tariff item 2509.00.00, as grinding is a permitted process under Chapter 25 Note 1.
2509.00.00English Dover Chalk Quarry Blocks
Massive quarry blocks of high-purity white chalk from the Dover cliffs in England, used in cement and soil amendment industries. This crude, unground form is directly from extraction and not subjected to processing beyond washing or crushing, fitting Chapter 25 Note 1.
2509.00.00French Cretaceous Chalk Chunks
Large, unrefined chunks of soft white chalk from Cretaceous geological formations in northern France, suitable for industrial crushing. Directly from quarries without any processing beyond extraction, this crude chalk falls under tariff item 2509.00.00.
2509.00.00High-Purity Chalk Quarry Run
Unscreened quarry run of high-purity natural chalk, direct from blasting operations, for pharmaceutical and food-grade processing. Strictly crude with no washing or sizing applied, meeting the crude state requirement of Chapter 25 Note 1.
2509.00.00Natural Chalk for Soil Amendment
Granular or powdered natural chalk applied to acidic soils to raise pH levels in agriculture. Classified as 'other' chalk under tariff item 2509.00.00, as it is not processed beyond grinding or sieving, which is permitted by Chapter 25 Note 1.
2509.00.00Natural Chalk Lumps
Rough, unprocessed lumps of natural calcium carbonate chalk mined from chalk deposits, used primarily as a raw material for industrial grinding and processing. This falls under tariff item 2509.00.00 as 'other' natural chalk, being in the crude state.
2509.00.00Natural White Chalk Lumps
Irregularly shaped lumps of natural calcium carbonate chalk extracted from chalk deposits, used primarily as a raw material for grinding into powder or further processing. Classified as crude chalk under tariff item 2509.00.00, as it is not processed beyond extraction.
2509.00.00Raw Chalk Rock for Crushing
Large blocks of raw natural chalk stone intended for crushing into aggregate or powder in construction and manufacturing. This raw form qualifies as 'other' chalk under tariff item 2509.00.00, being in the crude state without processing.
2509.00.00U.S. Imported Crude Blackboard Chalk Ore
Raw ore lumps containing natural chalk suitable for blackboard chalk manufacturing, imported in unprocessed state. This crude form before grinding into writing chalk sticks is covered by tariff item 2509.00.00, as it is not processed beyond the crude state.