Dry Ground Marble Calcium Carbonate
Micronized calcium carbonate derived from Italian Carrara marble via dry grinding, valued for its chemical purity. It is a separate chemically defined compound of calcium carbonate, meeting Chapter 28 Note 1(a). Used as a premium filler in adhesives and sealants.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the marble is not chemically processed and is imported in a natural state.
Natural calcium carbonate in the form of marble, not chemically processed, falls under Chapter 25.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Document the source and processing method to demonstrate that the product is calcium carbonate, not a natural stone product
• Ensure the product is not mixed with resins or other additives for use in adhesives
• Keep particle size distribution data available for CBSA verification
Related Products under Tariff item 2836.50.00
Calcite Powder Precipitated Grade
Synthetic calcite powder produced by a carbonation process, chemically equivalent to natural calcite but with higher purity. It is a separate chemically defined compound of calcium carbonate, meeting the requirements of Chapter 28 Note 1(a). Applications include toothpaste abrasives and optical coatings.
Calcium Carbonate for Animal Feed
Coarse calcium carbonate powder (200-400 mesh) fortified for use as a calcium source in poultry and livestock feed. It is a separate chemically defined compound of calcium carbonate, meeting Chapter 28 Note 1(a), and is not excluded by Chapter 28 Note 3. It meets AAFCO nutritional specifications for animal feed.
Calcium Carbonate Precipitate for Toothpaste
Precipitated calcium carbonate with a controlled abrasivity index for use in premium toothpaste formulations. It is a separate chemically defined compound of calcium carbonate, meeting Chapter 28 Note 1(a). Provides cleaning action without excessive enamel wear.
Coated Calcium Carbonate Stearic Acid
Calcium carbonate particles surface-treated with stearic acid to impart hydrophobic properties, with the coating comprising less than 5% of the total weight. The coating is a stabilizer or processing aid that does not render the product particularly suitable for a specific use, so it remains classified as calcium carbonate under Chapter 28 Note 1(e). Used in polyolefin films and sheets.
Food Grade Calcium Carbonate E170
Food grade calcium carbonate (E170) used as an acidity regulator, anticaking agent, and calcium source in food products. It is a separate chemically defined compound of calcium carbonate, meeting Chapter 28 Note 1(a), and is not excluded by Chapter 28 Note 3. Meets FCC standards for direct food contact applications.
Ground Calcium Carbonate (GCC) Powder
Ground calcium carbonate (GCC) powder derived from high-purity limestone, micronized to a fine powder. It is a separate chemically defined compound of calcium carbonate, meeting Chapter 28 Note 1(a). Used in pharmaceuticals and food supplements as a calcium source.