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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

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
πŸ‡¨πŸ‡³ChinaFree+25.0%25%
πŸ‡²πŸ‡½MexicoFreeβ€”Free
πŸ‡¨πŸ‡¦CanadaFreeβ€”Free
πŸ‡©πŸ‡ͺGermanyFreeβ€”Free
πŸ‡―πŸ‡΅JapanFreeβ€”Free

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

2836.50.00.00Higher: 35% vs 25%

If purified to calcium carbonate

Pharmaceutical grade becomes Chapter 28 chemicals.

3105.90.00Same rate: 25%

If mixed into fertilizers

Blended mineral fertilizers under Chapter 31.

Not sure which classification is right?

Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

Import Tips & Compliance

β€’ Particle size specs prevent chemical reclassification

β€’ Eco-cert for organic farming use