Chapter 39 · Plastics and articles thereof · Section 7
HS Code 3913.90
Other
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
US HTS + UK Tariff v4.0.1596 · updated 2026-09-10 · sources
United States - HTS lines under 3913.90
Source: official Harmonized Tariff Schedule (USITC). "General" is the normal-trade-relations rate; "Special" lists preference programs; "Other" is the column-2 rate. Additional Section 232/301 duties may apply on top.
| HTS code | Description | General | Special | Other | Unit |
|---|---|---|---|---|---|
| 3913.90.10 | Chemical derivatives of natural rubber | Free | - | 20% | kg |
| 3913.90.20 |
Polysaccharides and their derivatives 2 statistical lines (10-digit)
|
5.8% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 50% | kg |
| 3913.90.50 |
Polysaccharides and their derivatives > Other |
6.5% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 2.2¢/kg + 33.5% | kg |
Estimate the US duty runs in your browser · no caps
Enter the customs value (and quantity, when a rate is per-unit) to estimate the general-rate duty per HTS line. Estimates exclude Section 232/301 surcharges, MPF/HMF and fees. Not a customs ruling.
European Union - CN codes under 3913.90
Source: EU Combined Nomenclature (Eurostat, © European Union, reused per Decision 2011/833/EU). Duty rates and measures live in TARIC; each code links to the official consultation.
| CN code | Description | |
|---|---|---|
| 3913 90 00 | Other | EU duty (TARIC) → |
United Kingdom - commodity codes under 3913.90
Source: UK Integrated Online Tariff (Open Government Licence v3.0). Declarable 10-digit codes go on the customs declaration; check the official page for the current duty and VAT measures.
| Commodity code | Description | |
|---|---|---|
| 3913 90 00 00 | Other | UK duty & VAT → |
| 3913 90 00 20 | Poly(hydroxyalkanoate), predominantly consisting of poly(3-hydroxybutyrate) | UK duty & VAT → |
| 3913 90 00 40 | Xanthan gum | UK duty & VAT → |
| 3913 90 00 85 | Sterile sodium hyaluronate (CAS RN 9067-32-7) | UK duty & VAT → |
| 3913 90 00 87 | With:<br>- a weight average molecular weight (Mw) of not more than 900 000, <br>- an endotoxin level of not more than 0,008 Endotoxin units (EU)/mg, <br>- an ethanol content of not more than 1% by weight, <br>- an isopropanol content of not more than 0,5% by weight | UK duty & VAT → |
| 3913 90 00 88 | Other | UK duty & VAT → |
| 3913 90 00 95 | Chondroitinsulphuric acid, sodium salt (CAS RN 9082-07-9) | UK duty & VAT → |
| 3913 90 00 99 | Other | UK duty & VAT → |
Other subheadings in 3913
Sources: U.S. International Trade Commission, Harmonized Tariff Schedule (public domain) · EU Combined Nomenclature © European Union, Eurostat (Decision 2011/833/EU) · UK Integrated Online Tariff, contains public sector information licensed under the Open Government Licence v3.0. Data refreshed weekly. Details on About & Data Sources.