Heading 39.13

US HTS

Natural polymers (for example, alginic acid) and modified natural polymers (for example, hardened proteins, chemical derivatives of natural rubber), not elsewhere specified or included, in primary forms

2 subheadings · 4 tariff lines

3913.10Alginic acid, and its salts and esters, in primary forms1 line

Code / DescriptionMFN Rate

3913.10.00Alginic acid, and its salts and esters, in primary forms

4.2%

3913.90Chemical derivatives of natural rubber, nesoi, in primary forms3 lines

Code / DescriptionMFN Rate

3913.90.10Chemical derivatives of natural rubber, nesoi, in primary forms

Free

3913.90.20Polysaccharides and their derivatives, nesoi, in primary forms

5.8%

3913.90.50Natural polymers and modified natural polymers, nesoi, in primary forms

6.5%

Source: US International Trade Commission (USITC). For informational purposes only. Consult the official HTS and a licensed customs broker for binding rates.