U.S. imports of Nitrile-Function Compounds (NES) (SITC 51484) totaled $17.0M in August 2026, imported from 22 countries.
Importers of Nitrile-Function Compounds (NES) paid $2.0M in duties in August 2026, an average duty rate of 12.77% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Nitrile-Function Compounds (NES) imports of $17.0M in August 2026 ran 18% below the year-to-date monthly average of $20.6M.
Last updated: August 2026 dataNitrile-function compounds not elsewhere specified cover a chemically diverse set of organic nitriles — excluding acrylonitrile, which has its own dedicated heading — used as solvents, pharmaceutical intermediates, agrochemical precursors, and specialty polymer building blocks. Acetonitrile and propionitrile are among the more commercially significant members of this residual grouping, with acetonitrile widely used as an HPLC solvent in pharmaceutical quality-control laboratories. Correct classification requires confirming the compound is not captured by a more specific nitrile provision, and importers should provide CAS numbers and structural documentation to support entry.
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182 import shipments a month
Acetonitrile, a widely used laboratory and pharmaceutical solvent, is among the nitrile-function compounds that may fall under this residual heading when not covered by a more specific provision. Importers sourcing from countries subject to Section 301 measures should verify whether their specific HTS subheading is covered, as Section 301 exposure varies by tariff line and origin.
A certificate of analysis including the CAS registry number, IUPAC name, structural formula, and purity specification is the most effective supporting document. For novel or uncommon nitriles, a CBP binding ruling provides classification certainty and reduces the risk of a CF-28 request or post-entry audit.
Basic heading 195 of 465 in section 5
Basic heading 51484 · $17.0M of $27.5B
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Imports · August 2026
origin
China and Israel together supply 56% of it. China pays 19.0% duty; Malaysia 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
$17.0MYoY · free account
Exports
$6.8MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $243.6M of Nitrile-Function Compounds (NES) and exported $152.7M.
Through August 2026. Source: U.S. Census Bureau.