HS 281129

Inorganic Oxygen Compounds of Nonmetals, Not Elsewhere Specified or Included

U.S. imports of inorganic oxygen compounds of nonmetals, not elsewhere specified or included (HS 281129) totaled $4.0M in April 2026, traded with 22 countries.

Last updated: April 2026 data

Austria leads US import supply of this diverse residual category, which spans arsenic trioxide (2811291000), selenium dioxide (2811292000), sulfur dioxide (2811293000), and a range of other nonmetal oxygen compounds (2811295000 and 2811299000). Selenium dioxide is a niche but important reagent in organic synthesis and glass decolorization, while sulfur dioxide serves food preservation and winemaking applications. China and Canada are also significant suppliers. The breadth of substances captured here means classification precision is essential — importers should confirm that a product is not more specifically classifiable elsewhere in Chapter 28.

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Imports

$4.0M

from 22 countries · YTD: $15.1M

Exports

$2.9M

Deficit of $1.0M (net importer)

Trade balance: deficit of $1.0M (net importer)

YTD: $15.1M imported (April 2026)

182 shipments/month

Top Import Sources

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1GERMANY

Import Trend (12 months)

Monthly import values over time

Geographic Breakdown

URANIUM ENRICHED IN U235 ETC. PLUTONIUM ETC.

HS 284420

$450.1M

NATURAL URANIUM & COMPOUNDS, ALLOYS & CERAMICS ETC

HS 284410

$242.8M

ANHYDROUS AMMONIA

HS 281410

$116.5M

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Frequently Asked Questions

What distinguishes the substances classified under this NESOI heading from those in more specific subheadings?

This heading captures inorganic oxygen compounds of nonmetals that do not fall under a more specific HS subheading — for example, carbon dioxide (281121) and silicon dioxide (281122) have their own dedicated headings. Products here include arsenic trioxide, selenium dioxide, and sulfur dioxide, among others.

Who are the leading suppliers of inorganic nonmetal oxygen compounds to the US under this heading?

Austria is the top supplier, followed by China and Canada. Taiwan and Turkey also appear among the leading sources, reflecting the varied geographic origins of the distinct substances grouped under this residual heading.