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SITCSection 5
U.S. imports of amino acids, esters & salts (nes) (SITC 51465) totaled $42.8M in July 2026, traded with 37 countries.
Importers of Amino Acids, Esters & Salts (NES) paid $5.1M in duties in July 2026 — an effective duty rate of 20% on $25.9M in dutiable value, based on actual customs collections rather than the published tariff schedule. Amino Acids, Esters & Salts (NES) imports of $42.8M in July 2026 ran 23% below the year-to-date monthly average of $55.4M.
Last updated: July 2026 dataAmino acids not elsewhere specified — including their esters (limited to a single oxygen-function type) and corresponding salts — serve as critical intermediates in pharmaceutical synthesis, animal-feed supplementation, and specialty food-ingredient manufacturing. Classification under this residual heading requires confirming that the compound is not captured by a more specific amino-acid provision, making precise chemical characterization essential before entry. Importers should be aware that certain amino acids used in dietary supplements or pharmaceutical preparations may trigger FDA review at the port of entry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
586 shipments/mo
Basic heading 90 of 465 in section 5
Basic heading 51465 · $42.8M of $28.9B
The 'not elsewhere specified' (NES) qualifier means this heading applies only after ruling out more specific provisions. Importers should provide a detailed chemical specification — including molecular structure, oxygen-function count, and end-use — to support classification and avoid reclassification at audit.
Yes. Amino acids destined for use in dietary supplements, food fortification, or pharmaceutical applications are subject to FDA review. Shipments may be detained for sampling if the product lacks adequate labeling or documentation of intended use. Consult a licensed customs broker or regulatory specialist to confirm admissibility requirements.
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Imports · July 2026
origin
China and India together supply 64% of it.
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
$42.8MYoY · Pro
Exports
$18.0MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.