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)
Duty under this headingFree
ProgramOther Chapter 99 provisions
As of Revision 22 (2026), effective Oct 30, 2026Source: USITC HTS ↗