Chapters › 3913

HTS 3913

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

As of Revision 22 (2026), effective Oct 30, 2026Source: USITC HTS ↗
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Chapter 99 measures listing products under 3913

Lines under 3913

HTSDescriptionGeneralColumn 2
3913.10.00.00Alginic acid, its salts and esters4.2%25%
3913.90Other:
3913.90.10.00Chemical derivatives of natural rubberFree20%
3913.90.20Polysaccharides and their derivatives5.8%50%
3913.90.20.15Xanthan gum
3913.90.20.90Other
3913.90.50.00Other6.5%2.2¢/kg + 33.5%