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💾 Data Updated: Latest version • Last updated: December 09, 2025

3911.90.91.50 - Thermosetting 🖩

Details

FieldValue
Unit of Quantitykg
General Rate of Duty (Column 1 - General)6.5%
Special Rate of Duty (Column 1 - Special)Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)
A 🇦🇫 🇦🇱 🇩🇿 🇦🇴 🇦🇮 🇦🇷 🇦🇲 🇦🇿 🇧🇿 🇧🇯 🇧🇹 🇧🇴 🇧🇦 🇧🇼 🇧🇷 🇮🇴 🇻🇬 🇧🇫 🇧🇮 🇨🇻 🇰🇭 🇨🇲 🇨🇫 🇹🇩 🇨🇽 🇨🇨 🇰🇲 🇨🇰 🇨🇮 🇨🇩 🇩🇯 🇩🇲 🇪🇨 🇪🇬 🇪🇷 🇸🇿 🇪🇹 🇫🇰 🇫🇯 🇬🇦 🇬🇲 🇵🇸 🇬🇪 🇬🇭 🇬🇩 🇬🇳 🇬🇼 🇬🇾 🇭🇹 🇭🇲 🇮🇩 🇮🇶 🇯🇲 🇯🇴 🇰🇿 🇰🇪 🇰🇮 KO 🇰🇬 🇱🇧 🇱🇸 🇱🇷 🇲🇬 🇲🇼 🇲🇻 🇲🇱 🇲🇷 🇲🇺 🇲🇩 🇲🇳 🇲🇪 🇲🇸 🇲🇿 🇲🇲 🇳🇦 🇳🇵 🇳🇪 🇳🇬 🇳🇺 🇳🇫 🇲🇰 🇵🇰 🇵🇬 🇵🇾 🇵🇭 🇵🇳 🇨🇬 🇷🇼 🇸🇭 🇱🇨 🇻🇨 🇼🇸 🇸🇳 🇷🇸 🇸🇱 🇸🇧 🇸🇴 🇿🇦 🇸🇸 🇱🇰 🇸🇷 🇸🇹 🇹🇿 🇹🇭 🇹🇱 🇹🇬 🇹🇰 🇹🇴 🇹🇳 🇹🇻 🇺🇬 🇺🇦 🇺🇿 🇻🇺 🇼🇫 🇵🇸 🇪🇭 🇾🇪 🇿🇲 🇿🇼
AU 🇦🇺
BH 🇧🇭
CL 🇨🇱
CO 🇨🇴
D 🇦🇴 🇧🇯 🇧🇼 🇧🇫 🇨🇻 🇨🇫 🇹🇩 🇰🇲 🇨🇮 🇨🇩 🇩🇯 🇸🇿 🇪🇹 🇬🇦 🇬🇲 🇬🇭 🇬🇳 🇬🇼 🇰🇪 🇱🇸 🇱🇷 🇲🇬 🇲🇼 🇲🇱 🇲🇺 🇲🇿 🇳🇦 🇳🇪 🇳🇬 🇨🇬 🇷🇼 🇸🇳 🇸🇱 🇿🇦 🇸🇹 🇹🇿 🇹🇬 🇺🇬 🇿🇲
E 🇦🇬 🇦🇼 🇧🇸 🇧🇧 🇧🇿 🇻🇬 🇨🇼 🇩🇲 🇬🇩 🇬🇾 🇭🇹 🇯🇲 🇲🇸 NE 🇰🇳 🇱🇨 🇻🇨 🇹🇹
IL 🇮🇱
JO 🇯🇴
K 🇦🇫 🇦🇱 🇦🇩 🇦🇴 🇦🇮 🇦🇬 🇦🇷 🇦🇲 🇦🇼 🇦🇺 🇦🇹 🇦🇿 🇧🇸 🇧🇭 🇧🇩 🇧🇧 🇧🇾 🇧🇪 🇧🇿 🇧🇯 🇧🇲 🇧🇹 🇧🇴 🇧🇦 🇧🇼 🇧🇷 🇮🇴 🇻🇬 🇧🇳 🇧🇬 🇧🇫 🇧🇮 🇨🇻 🇰🇭 🇨🇲 🇨🇦 🇰🇾 🇨🇫 🇹🇩 🇨🇱 🇨🇳 🇨🇽 🇨🇨 🇨🇴 🇰🇲 🇨🇰 🇨🇷 🇭🇷 🇨🇾 🇨🇿 🇨🇿 🇨🇮 🇨🇩 🇩🇰 🇩🇯 🇩🇲 🇩🇴 EA 🇪🇨 🇪🇬 🇸🇻 🇬🇶 🇪🇷 🇪🇪 🇸🇿 🇪🇹 ET 🇫🇰 🇫🇴 🇫🇯 🇫🇮 🇫🇷 🇬🇫 🇵🇫 🇹🇫 🇬🇦 🇬🇲 🇵🇸 🇬🇪 🇩🇪 🇬🇭 🇬🇮 🇬🇷 🇬🇱 🇬🇩 🇬🇵 🇬🇹 🇬🇳 🇬🇼 🇬🇾 🇭🇹 🇭🇲 🇭🇳 🇭🇰 🇭🇺 🇮🇸 🇮🇳 🇮🇩 IN 🇮🇷 🇮🇶 🇮🇪 🇮🇱 IS 🇮🇹 🇯🇲 🇯🇵 🇯🇴 🇰🇿 🇰🇪 🇰🇮 KO 🇰🇼 🇰🇬 🇱🇦 🇱🇻 🇱🇧 🇱🇸 🇱🇷 🇱🇾 🇱🇮 🇱🇹 🇱🇺 🇲🇴 🇲🇬 🇲🇼 🇲🇾 🇲🇻 🇲🇱 🇲🇹 🇲🇭 🇲🇶 🇲🇷 🇲🇺 🇾🇹 🇲🇽 🇫🇲 🇲🇩 🇲🇨 🇲🇳 🇲🇪 🇲🇸 🇲🇦 🇲🇿 🇲🇲 🇳🇦 🇳🇷 🇳🇵 🇳🇱 NE 🇳🇨 🇳🇿 🇳🇮 🇳🇪 🇳🇬 🇳🇺 🇳🇫 🇲🇰 🇳🇴 🇴🇲 🇵🇰 🇵🇼 🇵🇦 🇵🇬 🇵🇾 🇵🇪 🇵🇭 🇵🇳 🇵🇱 🇵🇹 🇵🇷 🇶🇦 🇨🇬 🇷🇪 🇷🇴 🇷🇺 🇷🇼 🇸🇭 🇰🇳 🇱🇨 🇵🇲 🇻🇨 🇼🇸 🇸🇲 🇸🇦 SA 🇸🇳 🇷🇸 SE SE 🇸🇨 🇸🇱 🇸🇬 🇸🇰 🇸🇮 🇸🇧 🇸🇴 🇿🇦 🇰🇷 🇸🇸 SO SO 🇪🇸 🇱🇰 🇸🇩 SU 🇸🇷 🇸🇯 🇸🇪 🇨🇭 🇸🇾 🇸🇹 🇹🇼 🇹🇯 🇹🇿 🇹🇭 🇹🇱 🇹🇬 🇹🇰 🇹🇴 TR 🇹🇹 🇹🇳 🇹🇷 🇹🇲 🇹🇨 🇹🇻 🇺🇬 🇺🇦 🇦🇪 🇬🇧 UN 🇺🇾 🇺🇿 🇻🇺 🇻🇦 🇻🇪 🇻🇳 🇼🇫 🇵🇸 🇪🇭 🇾🇪 🇿🇲 🇿🇼
KR 🇰🇷
MA 🇲🇦
OM 🇴🇲
P 🇨🇷 🇩🇴 🇸🇻 🇬🇹 🇭🇳 🇳🇮
PA 🇵🇦
PE 🇵🇪
S 🇨🇦 🇲🇽
SG 🇸🇬
Column 2 Rate of Duty2.2¢/kg + 33.5%
Quota QuantityN/A
Additional DutiesN/A
About Duty Rates: Rates are divided into Column 1 and Column 2. Column 1 is subdivided into General (normal trade relations rates for all countries not eligible for special programs) and Special (preferential rates for countries with free trade agreements or preference programs). Column 2 rates apply to products from Cuba, North Korea, Belarus, and Russia. When no special rate exists for a classification, General rates apply.

Overview

This HTS classification covers thermosetting resins that are not elsewhere specified or included in Chapter 39, specifically in their primary forms. Thermosetting resins are characterized by their irreversible curing process, typically involving heat or a catalyst, which results in a permanently hardened, infusible, and insoluble product. Examples within this category include, but are not limited to, certain types of epoxy resins, phenolic resins, and amino resins when imported in bulk or basic forms like powders, granules, flakes, or bulk liquids.

It is crucial to distinguish this category from its sibling, 3911.90.91.10, which covers thermoplastic resins. Unlike thermosetting resins, thermoplastic materials can be repeatedly softened by heating and hardened by cooling. The fundamental difference lies in their molecular structure and response to thermal processing, which is a key determinant for customs classification. This category specifically excludes materials that exhibit thermoplastic properties.

As this is a leaf node, there are no further subcategories. Therefore, classification within 3911.90.91.50 relies heavily on identifying the material as a thermosetting product in its primary form and confirming that it is not specifically enumerated or covered by other more specific headings within Chapter 39 or related sections of the Harmonized Tariff Schedule. Documentary evidence, such as manufacturer's declarations and technical data sheets, will be essential for confirming the thermosetting nature of the imported resin.

Frequently Asked Questions

›What is HTS code 3911.90.91.50?
HTS code 3911.90.91.50 covers Thermosetting under the US Harmonized Tariff Schedule. It falls under Chapter 39: Plastics and articles thereof.
›What products are classified under 3911.90.91.50?
This classification covers Thermosetting. It is a subcategory of Other (3911.90.91).
›What is the import duty rate for 3911.90.91.50?
The general rate of duty for HTS 3911.90.91.50 is 6.5%. Special preferential rates may apply: Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG). The Column 2 rate is 2.2¢/kg + 33.5%.
›What unit of quantity is used for 3911.90.91.50?
Imports under HTS 3911.90.91.50 are measured in kg.
›Are there special tariff programs for 3911.90.91.50?
Yes, preferential rates may apply under programs including: Generalized System of Preferences (GSP) (duty-free treatment)., Australia Special Rate, Bahrain Special Rate, Chile Special Rate, Colombia Special Rate. And 13 more programs.
Go up to 3911.90.91 · Go up to Chapter 39: Plastics and articles thereof

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