U.S. imports of Halogenated, Sulfonated & Nitrated Derivatives of Aldehyde-Function Compounds (SITC 51626) totaled $108K in August 2026, imported from 6 countries.
Importers of Halogenated, Sulfonated & Nitrated Derivatives of Aldehyde-Function Compounds paid $15K in duties in August 2026, an average duty rate of 14.02% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Halogenated, Sulfonated & Nitrated Derivatives of Aldehyde-Function Compounds imports of $108K in August 2026 ran 36% below the year-to-date monthly average of $169K.
Last updated: August 2026 dataDerivatives of aldehydes, cyclic aldehyde polymers, and paraformaldehyde that have been halogenated, sulfonated, nitrated, or nitrosated occupy a specialized niche in fine chemical and agrochemical synthesis. The presence of halogen or nitro substituents often triggers additional regulatory scrutiny — including EPA Toxic Substances Control Act (TSCA) review — before these compounds can be imported for commercial use. Accurate classification requires distinguishing the parent aldehyde structure (acyclic, cyclic polymer, or paraformaldehyde) from the derivative modification, as these distinctions drive the applicable tariff line.
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6 import shipments a month
Yes. Under TSCA Section 13, importers must certify that chemical substances either comply with TSCA or are not subject to it. Halogenated or nitrated aldehyde derivatives that are not on the TSCA Chemical Substance Inventory may require a pre-manufacture notice (PMN) or exemption filing with the EPA before importation.
Paraformaldehyde is a solid polymeric form of formaldehyde and is classified separately from monomeric aldehydes. Its halogenated or sulfonated derivatives are grouped within this heading but must be distinguished from derivatives of acyclic aldehydes or cyclic aldehyde polymers, which may fall under different subheadings depending on the specific modification.
Basic heading 439 of 465 in section 5
Basic heading 51626 · $108K of $27.5B
Imports · August 2026
origin
India and China together supply 100% of it. India pays 14.9% duty; China 0.0%.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$108KYoY · free account
Exports
$53KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $2.8M of Halogenated, Sulfonated & Nitrated Derivatives of Aldehyde-Function Compounds and exported $894K.
Fewer than 6 of the last 12 months reported trade, or the latest month was under $500K; the trend chart is not shown for thin series.
Through August 2026 · exports 10 of 12 months reported. Source: U.S. Census Bureau.
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