Kelp Seaweed Ash
Ash produced from burning dried kelp seaweed, rich in potash and minerals, used in fertilizers. This product falls under tariff item 2621.90.00 as seaweed ash (kelp), explicitly included in the heading's scope.
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 |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the ash is mixed with other fertilizer ingredients
Animal or vegetable fertilizers, mixed or not, fall under heading 31.01.
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
• Verify the ash is not calcined magnesite, which falls under heading 25.19
• If used as fertilizer, check if it meets Canadian Food Inspection Agency (CFIA) requirements
• Provide a detailed product description to avoid misclassification
Related Products under Tariff item 2621.90.00
Bottom Ash from Urban Incinerators
Coarse bottom ash residue collected at the base of municipal waste incineration furnaces. This product falls under tariff item 2621.90.00 as it is ash from the incineration of municipal waste, not slag or ash used for metal extraction covered by heading 26.20.
Fly Ash from Household Waste Burning
Fine particulate fly ash captured from flue gases in municipal household waste incinerators. This product is classified under tariff item 2621.90.00 as ash from municipal waste incineration, and is not intended for metal recovery, which would fall under heading 26.20.
Landfill Leachate Treatment Residue Ash
Residues from incinerating municipal waste after leachate treatment in landfills, containing inert bottom ash. This product is classified under tariff item 2621.90.00 as ash from municipal waste incineration, not industrial waste residues.
Mixed Municipal Solid Waste Incinerator Residue
Combined bottom and fly ash from incinerating mixed municipal solid waste including plastics and organics. This product falls under tariff item 2621.90.00 as 'other' ash from municipal incineration, not for metal extraction.
Municipal Waste Incineration Ash
Ash and residues generated from the incineration of municipal solid waste, such as household garbage and non-hazardous urban refuse. This product is explicitly covered by tariff item 2621.90.00 as ash from municipal waste incineration.
Processed Kelp Ash Fertilizer Base
Lightly processed ash from kelp incineration, used as a base for organic fertilizers high in trace minerals. This product remains under tariff item 2621.90.00 as unrefined seaweed ash, not chemically processed.