U.S. imports of chemical products and preparations of the chemical or allied industries, nesoi (HS 382499) totaled $618.6M in August 2026, imported from 76 countries.
Importers of Chemical Products and Preparations of the Chemical or Allied Industries, NESOI paid $61.3M in duties in August 2026, an effective tariff rate of 9.90% of the $618.6M imported — duty actually collected as a share of that value, not the published tariff schedule. Chemical Products and Preparations of the Chemical or Allied Industries, NESOI imports of $618.6M in August 2026 ran 30% above the year-to-date monthly average of $475.9M.
Last updated: August 2026 dataAs the principal residual heading in Chapter 38, this subheading captures an exceptionally broad range of chemical products and preparations that do not fit more specific headings — from cultured crystals and bismuth mixtures to naphthenic acids, halogenated hydrocarbon blends, fatty acid ester mixtures, and complex inorganic compound blends used in battery cathode materials. Japan, South Korea, Germany, Canada, and China collectively dominate US import supply, reflecting the heading's role as a catch-all for advanced specialty chemicals sourced from the world's major chemical-producing economies. The 10-digit tariff lines under 382499 are highly granular: for example, 3824993910 covers lithium-nickel-cobalt-manganese oxide mixtures critical to EV battery manufacturing, while 3824991100 and 3824991900 cover cultured crystal ingots and pieces used in optical and electronic applications.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
8.5K shipments/mo
Classification under 382499 is appropriate only after ruling out all more specific headings in Chapter 38 and elsewhere in the tariff schedule. The importer should first assess whether the mixture's principal constituent or defining characteristic places it under a named subheading (e.g., 382487 for PFOS preparations, 382488 for PBDEs). Only if no specific heading applies does 382499 become the correct classification. A licensed customs broker or trade attorney should be consulted for complex multi-component preparations.
Many 10-digit lines under 382499 are subject to Section 301 tariffs on goods of Chinese origin. The specific lines affected and the applicable list (List 1 through List 4A) vary by tariff number, so importers sourcing from China should conduct a line-by-line Section 301 review for each applicable 10-digit code rather than assuming uniform treatment across the heading.
HSChapter 38
ImportsExports
Imports
$618.6MYoY · free account
Exports
$540.3MYoY · free account
12-mo low · imports
YoY · free accountOver the twelve months to August 2026, the U.S. imported $5.6B of Chemical Products and Preparations of the Chemical or Allied Industries, NESOI.
Through August 2026. Source: U.S. Census Bureau.
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Subheading 1 of 17 in heading 3824
Subheading 382499 · $618.6M of $650.9M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · August 2026
origin
Japan and Korea, South together supply 47% of it. China pays 38.3% duty; Japan 2.6%.
customs district
destination
entry
rate provision · imports
31.6% enters free of duty; duty collected equals 9.90% of total import value.