Section VII — Plastics and articles thereof; rubber and articles thereof
Chapter 39 — Plastics and articles thereof
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.
Subheading 3913.90 — Other
HS code
3913.90.00 Natural and modified natural polymers, in primary forms
Last Verified Date - 1 October 2026
Common commodities
Modified casein powderGelatin blocks for food industryNatural rubber chemical derivative pelletsDextran liquid solutionLignin derivative powder for paper productionChitin primary form for pharmaceutical useHardened proteins in solid blocksPrimary form chondroitin sulfate powderNatural resin blocks not covered by plastics headingsPowdered lignin derivatives for cosmetic applications