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

9902.03.52 - 2,4,4-Trimethyl-1,6-hexanediamine (CAS No. 25620-58-0) (provided for in subheading 2921.29.00)

Details

FieldValue
Unit of QuantityN/A
General Rate of Duty (Column 1 - General)Free
Special Rate of Duty (Column 1 - Special)No change
Column 2 Rate of DutyNo change
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 category, 9902.03.52, specifically addresses 2,4,4-Trimethyl-1,6-hexanediamine (CAS No. 25620-58-0). It is important to note that this provision is made "for" subheading 2921.29.00, indicating that while it falls under Chapter 99's temporary or special provisions, its primary classification resides within Chapter 29, which covers organic chemicals. This particular diamine is a specific organic chemical compound, typically used as an intermediate in the production of polymers and other chemical products.

The inclusion of this code within Chapter 99 signifies a temporary measure or special classification, distinct from the permanent listings in the earlier chapters of the Harmonized Tariff Schedule. While siblings within Chapter 99 might represent other temporary trade measures, tariff rate quotas, or special provisions for specific goods, this entry is precisely defined by its chemical identity. Unlike broader categories at the root level which may encompass entire classes of goods like live animals (as seen in the sibling examples), 9902.03.52 is narrowly focused on a single, identifiable chemical compound.

As a leaf node, this category does not possess subcategories. Therefore, the focus for classification purposes rests entirely on the accurate identification of the imported chemical as 2,4,4-Trimethyl-1,6-hexanediamine, with its associated CAS number serving as a key identifier. Any entry falling under this provision must be this specific chemical, and its classification under Chapter 99 implies it is subject to the temporary or special rules outlined for this particular HTS code.

Frequently Asked Questions

›What is HTS code 9902.03.52?
HTS code 9902.03.52 covers 2,4,4-Trimethyl-1,6-hexanediamine (CAS No. 25620-58-0) (provided for in subheading 2921.29.00) under the US Harmonized Tariff Schedule. It falls under Chapter 99: Temporary legislation; temporary modifications proclaimed pursuant to trade agreements legislation; additional import restrictions proclaimed pursuant to section 22 of the Agricultural Adjustment Act, as amended.
›What products are classified under 9902.03.52?
This classification covers 2,4,4-Trimethyl-1,6-hexanediamine (CAS No. 25620-58-0) (provided for in subheading 2921.29.00). It falls under Chapter 99: Temporary legislation; temporary modifications proclaimed pursuant to trade agreements legislation; additional import restrictions proclaimed pursuant to section 22 of the Agricultural Adjustment Act, as amended.
›What is the import duty rate for 9902.03.52?
The general rate of duty for HTS 9902.03.52 is Free. Special preferential rates may apply: No change. The Column 2 rate is No change.

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