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

2518.10.00.00 - Dolomite, not calcined or sintered 🖩

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 classification, 2518.10.00.00, specifically covers dolomite that has not undergone calcination or sintering processes. Dolomite is a carbonate mineral composed of a double carbonate of calcium and magnesium. Under this heading, it includes dolomite in its natural state, as well as that which has been roughly trimmed or merely cut into blocks or slabs of a rectangular (including square) shape. The key defining characteristic is the absence of thermal treatment that would alter its chemical composition or structure.

The primary distinction of this category from its sibling, 2518.20.00.00, lies in the processing. While both relate to dolomite, this heading encompasses the raw or minimally processed mineral, whereas 2518.20.00.00 specifically pertains to dolomite that has been calcined (heated to a high temperature) or sintered (fused together by heating). Therefore, if the dolomite has been subjected to these high-temperature treatments, it would be classified under the sibling heading, not this one.

As this is a leaf node within the HTS structure, there are no further subcategories to detail. Classification decisions for 2518.10.00.00 will therefore hinge on the fundamental criteria of the material being dolomite and its state of processing – specifically, that it remains uncalcined and unsintered, irrespective of whether it has been sawn into basic geometric shapes.

Frequently Asked Questions

›What is HTS code 2518.10.00.00?
HTS code 2518.10.00.00 covers Dolomite, not calcined or sintered 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 2518.10.00.00?
This classification covers Dolomite, not calcined or sintered. It is a subcategory of Dolomite, whether or not calcined or sintered, including dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape: (2518).
›What is the import duty rate for 2518.10.00.00?
The general rate of duty for HTS 2518.10.00.00 is Free. The Column 2 rate is Free.
›What unit of quantity is used for 2518.10.00.00?
Imports under HTS 2518.10.00.00 are measured in t.

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