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SITCSection 5
U.S. exports of organo-inorganic compounds, not elsewhere specified (SITC 51550) totaled $133.5M in July 2026.
Importers of Organo-Inorganic Compounds, Not Elsewhere Specified paid $5.5M in duties in July 2026 — an effective duty rate of 8.5% on $64.4M in dutiable value, based on actual customs collections rather than the published tariff schedule. Organo-Inorganic Compounds, Not Elsewhere Specified imports of $69.3M in July 2026 ran 24% below the year-to-date monthly average of $91.6M.
Last updated: July 2026 dataOrgano-inorganic compounds — molecules containing both carbon-based organic groups and inorganic elements such as silicon, tin, lead, or boron — serve as catalysts, stabilizers, and functional materials across the semiconductor, polymer, and specialty coatings industries. The NES designation signals that the compound does not fit a more precisely defined heading (such as organometallic compounds of specific metals), requiring importers to conduct a thorough heading-exclusion analysis before classification. Given the breadth of this category, trade professionals should pay close attention to whether specific compounds are subject to chemical safety reporting obligations under TSCA or analogous frameworks.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
995 shipments/mo
Basic heading 45 of 465 in section 5
Basic heading 51550 · $69.3M of $28.9B
Yes. The Toxic Substances Control Act (TSCA) requires that chemical substances imported into the US be listed on the TSCA Chemical Substance Inventory or qualify for an exemption. Importers must certify TSCA compliance at entry; substances not on the inventory may require a pre-manufacture notice or low-volume exemption before import.
The key criterion is the presence of a direct carbon-to-metal or carbon-to-heteroatom bond that gives the compound its organo-inorganic character, as opposed to simple inorganic salts where carbon appears only in a counterion such as carbonate. Structural analysis and, where necessary, a CBP binding ruling are the most reliable tools for resolving borderline cases.
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Exports · July 2026
destination
Belgium and Brazil together take 49% of it.
customs district
Census does not publish district detail for this classification system.
origin
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$69.3MYoY · Pro
Exports
$133.5MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.