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

2850.00.05.00 - Of calcium 🖩

Details

FieldValue
Unit of Quantitykg
General Rate of Duty (Column 1 - General)Free
Special Rate of Duty (Column 1 - Special)N/A
Column 2 Rate of Duty25%
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, 2850.00.05.00, specifically covers hydrides, nitrides, azides, silicides, and borides that are chemically defined and are composed of calcium. These compounds, while belonging to the broader group of inorganic chemicals, are distinct due to their specific elemental composition (calcium) and their chemical structure as binary compounds with hydrogen, nitrogen, azides, silicon, or boron. Their applications can range from high-temperature ceramics and metallurgical additives to specialized chemical synthesis.

Unlike its sibling categories, which classify similar binary compounds based on titanium (2850.00.07.00), tungsten (2850.00.10.00), or vanadium (2850.00.20.00), this subheading is exclusively concerned with those containing calcium. The "Other" category (2850.00.50.00) serves as a residual classification for such compounds not specifically listed with other metals.

As this is a leaf node in the HTS structure, there are no further subcategories. Therefore, classification within 2850.00.05.00 hinges on confirming the presence of calcium as the primary defining element in the hydride, nitride, azide, silicide, or boride compound, ensuring it is chemically defined and not a carbide under heading 2849.

Frequently Asked Questions

›What is HTS code 2850.00.05.00?
HTS code 2850.00.05.00 covers Of calcium under the US Harmonized Tariff Schedule. It falls under Chapter 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes.
›What products are classified under 2850.00.05.00?
This classification covers Of calcium. It is a subcategory of Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 2849: (2850.00).
›What is the import duty rate for 2850.00.05.00?
The general rate of duty for HTS 2850.00.05.00 is Free. The Column 2 rate is 25%.
›What unit of quantity is used for 2850.00.05.00?
Imports under HTS 2850.00.05.00 are measured in kg.
Go up to 2850.00 · Go up to Chapter 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes

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