3824.99.75

Naphthenic acids, their water-insoluble salts and their esters

Prepared binders for foundry molds or cores; chemical products and preparations of the chemical or allied industries (including those consisting of mixtures of natural products), not elsewhere specified or included: Other: Other: Other: Other: Other

Heading: 3824 Chapter: 38 As of August 15, 2026

Data provenance: Rates from HTS Revision 16 (Aug 15, 2026); trade measures verified against CBP CSMS and Federal Register notices through Aug 15, 2026.

Duty rates

Column 1 (General / MFN)

3.7%

Column 2 (Non-NTR)

25%

Column 1 (Special / FTA)

Free

Eligible

AAUBHCLCODEILJOKRMAOMPPAPESSG

The rates above are statutory column rates. Trade remedies in Chapter 99 (Section 301, 232, IEEPA, reciprocal) and FTA preferences can change the duty owed on a given entry — see below.

Trade measures (Chapter 99)

No active Chapter 99 measures are linked to this code.

Rate-change history

What the rate was before, and when it changed. The government schedule replaces each revision in place; we keep the timeline.

  1. NEW_PROGRAM Executive Order Feb 1, 2026 — Reciprocal Tariff (FR 2026-03824)

    Section 122 reciprocal surcharge in effect — additional 10% on most imports through July 24, 2026

    See the change →
  2. Base rate HTS 2023

    Column 1 general rate set to 3.7%.

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Other codes in heading 3824

3824.10.00.00 Prepared binders for foundry molds or cores 3824.30.00.00 Nonagglomerated metal carbides mixed together or with metallic binders 3824.40.10.00 Containing 5 percent or more by weight of one or more aromatic or modified aromatic substances 3824.40.20.00 Consisting wholly of inorganic substances 3824.40.50.00 Other 3824.50.00 Nonrefractory mortars and concretes 3824.50.00.10 Wet 3824.50.00.50 Other 3824.60.00.00 Sorbitol other than that of subheading 2905.44 3824.81.00.00 Containing oxirane (ethylene oxide) 3824.82.10.00 Chlorinated but not otherwise halogenated 3824.82.90.00 Other 3824.83.00.00 Containing tris(2,3-dibromopropyl) phospate 3824.84.00.00 Containing aldrin (ISO), camphechlor (ISO) (toxaphene), chlordane (ISO), chlordecone (ISO), DDT (ISO) (clofenatone (INN)), 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane), dieldrin (ISO INN), endosulfan (ISO), endrin (ISO), heptachlor (ISO) or mirex (ISO) 3824.85.00.00 Containing 1,2,3,4,5,6-hexachlorocyclohexane (HCH (ISO)), including lindane (ISO,INN) 3824.86.00.00 Containing pentachlorobenzene (ISO) or hexachlorobenzene (ISO) 3824.87.00.00 Containing perfluorooctane sulfonic acid, its salts, perfluorooctane sulfonamides, or perfluorooctane sulfonyl fluoride 3824.88.00.00 Containing tetra-, penta-, hexa-, hepta-, or octabromodiphenyl ethers 3824.89.00.00 Containing short-chain chlorinated paraffins 3824.91.00.00 Mixtures and preparations consisting mainly of (5-ethyl-2-methyl-2-oxido3,2-dioxaphosphinan-5-yl)methyl methylphosphonate and bis(5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl)methyl methylphosphonate

View all codes in heading 3824 →

Duty by origin country

The rate above is the statutory base. Total landed duty depends on origin — see the calculated rate for 3824.99.75 from each major US trading partner.

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