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

3105.51.00.00 - Containing nitrates and phosphates 🖩

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, 3105.51.00.00, specifically classifies mineral or chemical fertilizers that contain both nitrogen and phosphorus as their primary fertilizing elements, and where these nutrients are present in the form of nitrates and phosphates. These products are designed to provide essential nutrients for plant growth, addressing deficiencies in soil nitrogen and phosphorus levels through chemical compounds.

The distinguishing feature of this category from its sibling, 3105.59.00.00, lies in the chemical form of the phosphorus. While 3105.59.00.00 covers "other" fertilizers containing nitrogen and phosphorus, this specific code pinpoints those where the phosphorus is present as a phosphate. This distinction is crucial for tariff purposes, reflecting specific chemical compositions and potential production processes.

As this is a leaf node within the HTS structure, there are no further subcategories. Classification within 3105.51.00.00 is therefore definitive once the presence of nitrates and phosphates, along with nitrogen and phosphorus as the fertilizing elements, has been established. This category encompasses a range of granular, powdered, or liquid formulations intended for agricultural or horticultural application.

Frequently Asked Questions

›What is HTS code 3105.51.00.00?
HTS code 3105.51.00.00 covers Containing nitrates and phosphates under the US Harmonized Tariff Schedule. It falls under Chapter 31: Fertilizers.
›What products are classified under 3105.51.00.00?
This classification covers Containing nitrates and phosphates. It is a subcategory of Other mineral or chemical fertilizers containing the two fertilizing elements nitrogen and phosphorus:.
›What is the import duty rate for 3105.51.00.00?
The general rate of duty for HTS 3105.51.00.00 is Free. The Column 2 rate is Free.
›What unit of quantity is used for 3105.51.00.00?
Imports under HTS 3105.51.00.00 are measured in t.

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