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

2529.21.00.00 - Containing by weight 97 percent or less of calcium fluoride 🖩

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 Duty13.5%
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, 2529.21.00.00, covers fluorspar that contains by weight 97 percent or less of calcium fluoride (CaFâ‚‚). Fluorspar, also known as fluorite, is a mineral primarily composed of calcium fluoride. In this specific category, the mineral has a significant presence of other elements or impurities, reducing the calcium fluoride content to 97% or below. This material is typically found in crystalline or granular form and finds applications in various industrial processes, including the production of steel, aluminum, and certain chemicals.

The crucial distinguishing factor for this category lies in its precise calcium fluoride content. It is differentiated from its sibling category, 2529.22.00.00, which exclusively covers fluorspar containing more than 97 percent of calcium fluoride by weight. Therefore, the analytical determination of the calcium fluoride percentage is paramount for correct classification, with the threshold of 97% being the dividing line.

As this HTS code represents a leaf node, there are no further subcategories beneath it. Classification decisions under this heading will therefore depend entirely on the accurate assessment of the material's composition, specifically its calcium fluoride content, and its conformity to the description provided within Chapter 25 of the Harmonized Tariff Schedule.

Frequently Asked Questions

›What is HTS code 2529.21.00.00?
HTS code 2529.21.00.00 covers Containing by weight 97 percent or less of calcium fluoride under the US Harmonized Tariff Schedule. It falls under Chapter 25: Salt; sulfur; earths and stone; plastering materials, lime and cement.
›What products are classified under 2529.21.00.00?
This classification covers Containing by weight 97 percent or less of calcium fluoride. It is a subcategory of Fluorspar:.
›What is the import duty rate for 2529.21.00.00?
The general rate of duty for HTS 2529.21.00.00 is Free. The Column 2 rate is 13.5%.
›What unit of quantity is used for 2529.21.00.00?
Imports under HTS 2529.21.00.00 are measured in t.
Go up to 2529 · Go up to Chapter 25: Salt; sulfur; earths and stone; plastering materials, lime and cement

Stay Updated

Join our newsletter to get all updates of the harmonized Tariff Schedule.