HS Code 3913: Natural polymers (e.g. alginic acid) and modified natural polymers (e.g. hardened proteins, chemical derivatives of natural rubber), n.e.c. or included, in primary forms

Q: Is HS code 3913 the same in every country?

Yes — HS code 3913 is part of the WCO Harmonized System and is the same in every WCO member country at the 6-digit level. Beyond 6 digits, each country extends the code under its own system (e.g. HTSUS in the US, CN/TARIC in the EU, HSK in Korea, CCCHS in China) for national tariff rates and trade statistics. To see how a specific country classifies this code, select a country.

Q: Which WCO edition does HS code 3913 belong to, and has it been reclassified?

The Harmonized System is maintained by the World Customs Organization (WCO) and revised approximately every five years. The current edition is HS 2022, which replaced HS 2017 on 1 January 2022. Codes are added, merged, or split between editions to reflect new products and trade patterns, so a code valid in one edition may not exist or may mean something different in another.

Q: How do I find the correct country-specific version of HS code 3913?

Beyond the international 6-digit level, each country adds its own digits — the US extends to 10 digits (HTSUS), the EU to 8 or 10 (CN/TARIC), China to 13 (CCCHS), Korea to 10 (HSK), Japan to 9, and so on. To find the full code used by a specific country, select a country in TradeInt's HS Code Tool and search for 3913.

What is HS Code 3913

HS Code 3913 covers Natural polymers (e.g. alginic acid) and modified natural polymers (e.g. hardened proteins, chemical derivatives of natural rubber), n.e.c. or included, in primary forms. It is a 4-digit heading within Chapter 39 (Plastics and articles thereof), Section VII. Its 6-digit subheadings are identical in every HS-adopting country; from the 7th digit onward, each country extends the code for its own tariff and statistics.

Explore global 2026 latest import export trade data and shipment records for Natural Polymers on TradeInt global trade data platform

What does HS Code 3913 Natural polymers (e.g. alginic acid) and modified natural polymers (e.g. hardened proteins, chemical derivatives of natural rubber), n.e.c. or included, in primary forms Cover?

Section VII

Chapters (39-40) Plastics and articles thereof; rubber and articles thereof

Chapter 39

Plastics and articles thereof

HS Code 3913

Natural polymers (e.g. alginic acid) and modified natural polymers (e.g. hardened proteins, chemical derivatives of natural rubber), n.e.c. or included, in primary forms

HS Code 391310

Polymers, natural; alginic acid, its salts and esters, in primary forms

HS Code 391390

Polymers, natural and modified natural; in primary forms (excluding alginic acid, its salts and esters)

Click any HS code above to see live 2026 latest Natural Polymers trade data including exporters, importers, and shipment volumes.

What HS Codes for Plastics Do Not Cover

Chapter 39 covers plastics in primary form and articles made of plastic. Goods frequently misclassified here but that belong elsewhere include:

Synthetic textile yarns and fibers

Chapters 54, 55

Footwear of plastic

Chapter 64

Plastic furniture

Chapter 94

Plastic toys, games, and sports equipment

Chapter 95

This list highlights common classification errors only — it is not exhaustive. For binding classification, work with a licensed customs broker or qualified trade compliance professional.

Related HS Codes under Natural Polymers HS 3913

HS Code 391310

Polymers, natural; alginic acid, its salts and esters, in primary forms

HS Code 391390

Polymers, natural and modified natural; in primary forms (excluding alginic acid, its salts and esters)

HS Code 3901

Polymers of ethylene, in primary forms

HS Code 3902

Polymers of propylene or of other olefins, in primary forms

HS Code 3903

Polymers of styrene, in primary forms

HS Code 3904

Polymers of vinyl chloride or of other halogenated olefins, in primary forms

HS Code 3905

Polymers of vinyl acetate or of other vinyl esters, in primary forms; other vinyl polymers in primary forms

HS Code 3906

Acrylic polymers in primary forms

HS Code 3907

Polyacetals, other polyethers and epoxide resins, in primary forms; polycarbonates, alkyd resins, polyallyl esters and other polyesters, in primary forms

HS Code 3908

Polyamides in primary forms

Frequently Asked Questions

What is HS code 3913?

HS code 3913 covers Natural polymers (e.g. alginic acid) and modified natural polymers (e.g. hardened proteins, chemical derivatives of natural rubber), n.e.c. or included, in primary forms, a heading within Chapter 39 (Plastics and articles thereof) of the WCO Harmonized System. Headings sit between the broad chapter level and the more specific 6-digit subheading level.

Is HS code 3913 the same in every country?

Which WCO edition does HS code 3913 belong to, and has it been reclassified?

How do I find the correct country-specific version of HS code 3913?