Kelp Seaweed Ash from Mexico
Ash produced from burning dried kelp seaweed, rich in potash and minerals, used in fertilizers. Falls under HTS 2621.90.00.00 as 'other slag and ash, including seaweed ash (kelp)', separate from municipal waste.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Label as 'seaweed ash' clearly to distinguish from 2621.10 if not pure kelp
• Test for iodine and alkali content; provide certificates for agricultural use
• Avoid bulk packaging that mimics industrial slag, leading to 2620 misclassification