Heading 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:

From Chapter 39: Chapter 39

HTS Codes (10-Digit)

HTS Code Description General Duty
3913100000
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 Alginic acid, its salts and esters
4.2%
3913901000
Other Chemical derivatives of natural rubber
Free
3913902000
Other Polysaccharides and their derivatives
5.8%
3913902015
Polysaccharides and their derivatives Xanthan gum
5.8%
3913902090
Polysaccharides and their derivatives Other
5.8%
3913905000
Other Other
6.5%