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

2523.90.00.00 - Other hydraulic cements 🖩

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 Duty$1.32/t, including weight of container
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, 2523.90.00.00, encompasses "Other hydraulic cements" that do not fall under the more specific subheadings within the 2523.90 group. Hydraulic cements are binders that harden by reacting chemically with water, forming a durable, water-resistant compound. This classification is for those cements that exhibit hydraulic properties but are not explicitly listed as Portland cement, aluminous cement, slag cement, or supersulfate cement. Examples may include cements with specialized additives or formulations designed for particular construction applications.

Distinguishing this category from its siblings is crucial for accurate classification. While 2523.10.00.00 specifically covers cement clinkers, which are intermediate products in cement manufacturing, and 2523.30.00.00 deals with aluminous cements (characterized by a high alumina content), this category captures the remaining hydraulic cements. It serves as a residual classification for hydraulic cements that do not fit the distinct definitions of the other enumerated types.

As this is a leaf node, there are no further subcategories under 2523.90.00.00. Therefore, the focus for classification within this heading is on identifying whether a cement possesses hydraulic properties and ensuring it is not classifiable as Portland cement, aluminous cement, slag cement, or supersulfate cement. The presence of coloring agents or the form (e.g., powder or granular) does not preclude a product from being classified here, provided it meets the fundamental definition of a hydraulic cement not otherwise specified.

Frequently Asked Questions

›What is HTS code 2523.90.00.00?
HTS code 2523.90.00.00 covers Other hydraulic cements 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 2523.90.00.00?
This classification covers Other hydraulic cements. It is a subcategory of Portland cement, aluminous cement, slag cement, supersulfate cement and similar hydraulic cements, whether or not colored or in the form of clinkers: (2523).
›What is the import duty rate for 2523.90.00.00?
The general rate of duty for HTS 2523.90.00.00 is Free. The Column 2 rate is $1.32/t, including weight of container.
›What unit of quantity is used for 2523.90.00.00?
Imports under HTS 2523.90.00.00 are measured in t.

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