Tariff reference › Chapter 99 › 9902.11.61
HTS 9902.11.61 — Alginic acid (CAS No. 9005-32-7), ammonium alginate (CAS No. 9005-34-9), potassium alginate (CAS No. 9005-36-1), calcium alginate (CAS No. 9005-35-0) and magnesium alginate (CAS No. 37251-44-8) (provided for in subheading 3913.10.00)
Alginic acid (CAS No. 9005-32-7), ammonium alginate (CAS No. 9005-34-9), potassium alginate (CAS No. 9005-36-1), calcium alginate (CAS No. 9005-35-0) and magnesium alginate (CAS No. 37251-44-8) (provided for in subheading 3913.10.00)
Current US duty rate
| Column 1 (General / MFN) | Free |
|---|---|
| Special (FTA programs) | No change |
| Column 2 (other) | No change |
No Chapter 99 (Section 301/232/122) cross-reference on this line; origin-specific surcharges may still apply — check the calculator.
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Programmatic access: the full duty stack (base + surcharges + MPF/HMF for a given origin & value) is at /duty?code=9902.11.61&origin=&value=. Current as of USITC 2026HTSRev10 (synced 2026-06-12).
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