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

3102.40.00.00 - Mixtures of ammonium nitrate with calcium carbonate or other inorganic nonfertilizing substances 🖩

Details

FieldValue
Unit of Quantityt
General Rate of Duty (Column 1 - General)Free
Special Rate of Duty (Column 1 - Special)N/A
Column 2 Rate of DutyFree
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, 3102.40.00.00, encompasses mixtures where ammonium nitrate is combined with inorganic non-fertilizing substances, most commonly calcium carbonate. The primary purpose of these mixtures is still for fertilization, but the addition of substances like calcium carbonate serves to improve the handling properties, reduce the risk of explosion, or modify the release rate of the nitrogenous component. These are distinct from pure ammonium nitrate (3102.30.00.00), which is classified separately, and from urea (3102.10.00), another major nitrogenous fertilizer.

Unlike some sibling categories that focus on single compounds or specific double salts, 3102.40.00.00 specifically addresses mixtures designed for agricultural use. The key defining characteristic is the presence of ammonium nitrate as a primary component, blended with inert or non-fertilizing inorganic materials. This ensures that goods primarily composed of ammonium nitrate with other fertilizing components, or solely ammonium nitrate itself, are classified under different headings.

As this is a leaf node within the HTS structure, there are no further subdivisions under 3102.40.00.00. Classification within this category is determined by the confirmed presence of ammonium nitrate in combination with non-fertilizing inorganic substances. Importers should ensure that the composition of the product aligns with the description to maintain accurate customs declarations.

Frequently Asked Questions

›What is HTS code 3102.40.00.00?
HTS code 3102.40.00.00 covers Mixtures of ammonium nitrate with calcium carbonate or other inorganic nonfertilizing substances under the US Harmonized Tariff Schedule. It falls under Chapter 31: Fertilizers.
›What products are classified under 3102.40.00.00?
This classification covers Mixtures of ammonium nitrate with calcium carbonate or other inorganic nonfertilizing substances. It is a subcategory of Mineral or chemical fertilizers, nitrogenous: (3102).
›What is the import duty rate for 3102.40.00.00?
The general rate of duty for HTS 3102.40.00.00 is Free. The Column 2 rate is Free.
›What unit of quantity is used for 3102.40.00.00?
Imports under HTS 3102.40.00.00 are measured in t.

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