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:
Duty Rates
General Rate (MFN)
N/A
Column 2 Rate
N/A
Classification
- Section
- 7. Plastics and Articles Thereof; Rubber and Articles Thereof
- Chapter
- 39. Chapter 39
Calculate Import Duty
Estimate duties for 3913 from any country
Frequently Asked Questions
What is HTS code 3913?
HTS code 3913 covers "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:". The general duty rate is N/A.
What is the duty rate for HTS 3913?
The general (MFN) duty rate for HTS 3913 is N/A. Preferential rates may apply under trade agreements like USMCA, KORUS, etc.
What chapter does HTS 3913 belong to?
HTS 3913 belongs to Chapter 39: Chapter 39.
Check Rates by Country
Tariff rates for HTS 3913 vary by country of origin. Select a trading partner to see applicable rates.
Top Trading Partners
Related Codes in This Chapter
- 3913.10.00Alginic acid, its salts and esters
- 3913.90.10Chemical derivatives of natural rubber
- 3913.90.20Polysaccharides and their derivatives
- 3913.90.50Other
- 3914.00.20Cross-linked polyvinylbenzyltrimethylammonium chloride (Cholestyramine resin USP...
- 3914.00.60Other
- 3915.10.00Of polymers of ethylene
- 3915.20.00Of polymers of styrene
Guides & Resources
IEEPA Tariff Refund Calculator
Check if your imports qualify
Section 232 Tariffs 2026: Steel, Aluminum & Copper Rates After the April Restructuring
How Are Tariffs Calculated? The 2026 US Import Duty Formula Explained
CAPE Portal Troubleshooting: Fix Rejected Claims, CSV Errors & ACH Issues
Copper Tariff 2026: Section 232 Rates, Affected Products, and What Importers Need to Know
Importing From Taiwan: 2026 US Tariff Rates, Trade Deal & Customs Guide
Importing From Sri Lanka: 2026 US Tariff Rates, Duties & Customs Guide
Section 301 Investigation 2026: Every Country, Sector, and Deadline Importers Need to Know
CAPE Portal Filing Guide: How to Get Your IEEPA Tariff Refund in 2026
EU Combined Nomenclature (CN Codes): How the EU Classifies Imports and Why US Exporters Should Care
Customs Bond: Types, Costs, and How to Get One (2026 Guide)
Importer of Record (IOR): Responsibilities, Requirements, and How to Become One
Temporary Importation Under Bond (TIB): How It Works, What It Costs, and When to Use It
Agency Information Collection Activities; Extension; International Mail Duty Worksheet (IMDW)
Steel Concrete Reinforcing Bar From Algeria; Closure of Investigation