CN 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
| Code | Description | Unit | Third-country duty | Source |
|---|---|---|---|---|
| 3913 10 | Alginic acid, its salts and esters | TARIC | ||
| 3913 10 00 20 | Sodium alginate extracted from brown seaweed, with - a loss on drying of not more than 15 % by weight (4h at 105 °C), - a water-insoluble fraction of not more than 2 % by weight, calculated on the dry weight | 5% | TARIC | |
| 3913 10 00 90 | Other | 5% | TARIC | |
| 3913 90 | Other | TARIC | ||
| 3913 90 00 20 | Poly(hydroxyalkanoate), predominantly consisting of poly(3-hydroxybutyrate) | 6.5% | TARIC | |
| 3913 90 00 40 | Xanthan gum | 6.5% | TARIC | |
| Sodium hyaluronate | ||||
| 3913 90 00 85 | Sterile sodium hyaluronate (CAS RN 9067-32-7) | 6.5% | TARIC | |
| Non sterile | ||||
| 3913 90 00 87 | With: - a weight average molecular weight (Mw) of not more than 900 000, - an endotoxin level of not more than 0,008 Endotoxin units (EU)/mg, - an ethanol content of not more than 1% by weight, - an isopropanol content of not more than 0,5% by weight | 6.5% | TARIC | |
| 3913 90 00 88 | Other | 6.5% | TARIC | |
| 3913 90 00 95 | Chondroitinsulphuric acid, sodium salt (CAS RN 9082-07-9) | 6.5% | TARIC | |
| 3913 90 00 99 | Other | 0% | TARIC | |
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Source: European Commission (DG TAXUD), TARIC and Combined Nomenclature data as extracted on 1 October 2026. Heading 3913 in the TARIC consultation
Only the third-country duty is shown. Not shown: tariff preferences, quotas, suspensions, anti-dumping and other additional duties, import controls and the legal notes. The TARIC consultation lists the measures of each code.
This page is general information, not legal advice and not a classification decision. Tariff texts and rates change: check the publisher's current schedule, and ask the customs authority for a binding ruling where the answer matters.