2804 - Hydrogen, rare gases and other nonmetals:
Sub-classifications
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2804 5000
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2804 7000 00
Overview
Chapter 28 of the Harmonized Tariff Schedule (HTS) encompasses inorganic chemicals. Within this chapter, Heading 2804 specifically covers a group of elemental nonmetals, including hydrogen, rare gases, and other fundamental nonmetallic elements. This category is distinguished from other headings within Chapter 28 by its focus on these basic, often gaseous or solid, nonmetallic elements in their elemental form, rather than their compounds or more complex chemical preparations.
The subcategories within 2804 serve to delineate specific nonmetals based on their distinct chemical properties and common commercial applications. These include hydrogen, a highly reactive gas; the noble or rare gases (such as helium, neon, argon, krypton, xenon, and radon), known for their inertness; and other nonmetals like boron, silicon, phosphorus, arsenic, and selenium. The classification at this level is crucial for determining applicable duties and trade regulations, as these elements have diverse uses ranging from industrial processes and scientific research to semiconductor manufacturing and specialized medical applications.