Clam Shell Powder
Simply ground powder from clam shells (Mercenaria spp.), unworked beyond basic crushing. Falls under HTS 0508.00.00.00 as powder of mollusc shells for soil amendment or cosmetics.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If purified to calcium carbonate
Pharmaceutical grade becomes Chapter 28 chemicals.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Particle size specs prevent chemical reclassification
• Eco-cert for organic farming use
Related Products under HTS 0508.00.00.00
Cowrie Shells Whole Unworked
Whole cowrie shells (Cypraea spp.) simply cleaned, unworked and not cut. HTS 0508.00.00.00 covers these mollusc shells for currency replicas, crafts, or jewelry blanks.
Lobster Shell Waste
Unworked waste shells from lobsters (Homarus spp.), simply prepared by cleaning. HTS 0508.00.00.00 for crustacean shell waste used in biotech or bait.
Sea Urchin Shells Unworked
Whole shells from sea urchins (Echinoidea), simply prepared without cutting. Under HTS 0508.00.00.00 as echinoderm shells for decorative or research use.
Shrimp Shell Waste Powder
Powdered waste from shrimp (Penaeus spp.) shells, simply ground without chemical treatment or shaping. Classified in HTS 0508.00.00.00 as waste of crustacean shells, often used in chitin extraction or fertilizer.
Cuttlebone Unworked
Natural cuttlebone from cuttlefish (Sepia spp.), simply dried and unworked, not powdered or shaped. Under HTS 0508.00.00.00 as unworked cuttlebone for bird cages or calcium supplements.
Unworked Red Coral Branches
Natural branches of red coral (Corallium rubrum) harvested from deep-sea environments, unworked or simply cleaned but not cut, polished, or carved. This falls under HTS 0508.00.00.00 as coral that is unworked or simply prepared, intended for further processing into jewelry or decorative items.