HTS heading 3824 · Chapter 38
HTS 3824: Prepared binders for foundry molds or cores
HTS heading 3824 covers 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. It has 39 tariff lines with a duty rate; the general (MFN) rates are 6.5% (16 lines), Free (7 lines), 5% (6 lines) and others.
Imports may also owe Chapter 99 tariffs (Section 232, 301 or 201) depending on origin and date, plus the Merchandise Processing Fee and, by sea, the Harbor Maintenance Fee.
Rates from the 2026 HTS Revision 22, effective October 30, 2026. Source: U.S. International Trade Commission.
Tariff lines and duty rates
| HTS code | Description | General | Special | Column 2 | Estimate |
|---|---|---|---|---|---|
| 3824.10.00.00 | Prepared binders for foundry molds or cores[kg] | 6% | Free (A+,AU,BH,CL,CO,D,E, IL,JO, KR,MA,OM,P, PA,PE,S,SG) | 25% | Estimate → |
| 3824.30.00.00 | Nonagglomerated metal carbides mixed together or with metallic binders[kg] | 3.6% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | Estimate → |
| 3824.40 | Prepared additives for cements, mortars or concretes: | ||||
| 3824.40.10.00 | Containing 5 percent or more by weight of one or more aromatic or modified aromatic substances[kg] | 6.5% | Free (A+,AU,BH,CL,CO,D,E, IL,JO,KR,MA,OM,P, PA,PE,S,SG) | 3.7¢/kg + 60% | Estimate → |
| 3824.40.20.00 | Consisting wholly of inorganic substances[kg] | Free | 25% | Estimate → | |
| 3824.40.50.00 | Other[kg] | 5% | Free (A+,AU,BH,CL,CO,D,E, IL,JO,KR,MA,OM,P, PA,PE,S,SG) | 25% | Estimate → |
| 3824.50.00 | Nonrefractory mortars and concretes | Free | 20% | ||
| 3824.50.00.10 | Wet[t] | Estimate → | |||
| 3824.50.00.50 | Other[t] | Estimate → | |||
| 3824.60.00.00 | Sorbitol other than that of subheading 2905.44[kg] | 4.9% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 50% | Estimate → |
| Goods specified in subheading note 3 to this chapter: | |||||
| 3824.81.00.00 | Containing oxirane (ethylene oxide)[kg] | 5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | Estimate → |
| 3824.82 | Containing polychlorinated biphenyls (PCBs), polychlorinated terphenyls ({PCTs) or polybrominated biphenyls (PBBs): | ||||
| 3824.82.10.00 | Chlorinated but not otherwise halogenated[kg] | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 114.5% | Estimate → |
| 3824.82.90.00 | Other[kg] | 3.7% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | Estimate → |
| 3824.83.00.00 | Containing tris(2,3-dibromopropyl) phospate[kg] | 5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | Estimate → |
| 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)[kg] | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 114.5% | Estimate → |
| 3824.85.00.00 | Containing 1,2,3,4,5,6-hexachlorocyclohexane (HCH (ISO)), including lindane (ISO,INN)[kg] | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 114.5% | Estimate → |
| 3824.86.00.00 | Containing pentachlorobenzene (ISO) or hexachlorobenzene (ISO)[kg] | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 3.7¢/kg + 60% | Estimate → |
| 3824.87.00.00 | Containing perfluorooctane sulfonic acid, its salts, perfluorooctane sulfonamides, or perfluorooctane sulfonyl fluoride[kg] | 3.7% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | Estimate → |
| 3824.88.00.00 | Containing tetra-, penta-, hexa-, hepta-, or octabromodiphenyl ethers[kg] | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 3.7¢/kg + 60% | Estimate → |
| 3824.89.00.00 | Containing short-chain chlorinated paraffins[kg] | 6.5% | Free (A+,AU,BH,CL,CO,D,E, IL,JO, K,KR,MA,OM,P, PA,PE,S,SG) | 25% | Estimate → |
| Other: | |||||
| 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[kg] | 5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | Estimate → |
| 3824.92.00.00 | Polyglycol esters of methylphosphonic acid.[kg] | 5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,JP,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | Estimate → |
| 3824.99 | Other: | ||||
| Cultured crystals (other than optical elements of chapter 90), weighing not less than 2.5 g each: | |||||
| 3824.99.11.00 | In the form of ingots[kg] | Free | 25% | Estimate → | |
| 3824.99.19.00 | Other[kg] | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 50% | Estimate → |
| Other: | |||||
| Mixtures containing 5 percent or more by weight of one or more aromatic or modified aromatic substances: | |||||
| 3824.99.21.00 | Consisting wholly of substances found naturally in coal tar, whether obtained from coal tar or other source[kg] | Free | Free | Estimate → | |
| 3824.99.25.00 | Aqueous mixtures of triphenyl sulfonium chloride, diphenyl (4-phenylthio)phenyl sulfonium chloride and (thiodi-4,1- phenylene)bis(diphenyl sulfonium) dichloride[kg] | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 3.7¢/kg + 60% | Estimate → |
| 3824.99.26.00 | Benzene, 2,4-diisocyanate-1,3,5-tris(1- methylethyl) homopolymer; 5-Fluoro-2-methyl-1-[[4-(methylsulfinyl)- phenyl]methylene]-1H-indene;Mixtures of dimethyl phthalate, t-butanol, hydrogen peroxide, and sodium salicylate; andMixtures containing derivatives of N-[4-(2- hydroxy-3-phenoxypropoxy)phenyl]- acetamide[kg] | Free | 3.7¢/kg + 60% | Estimate → | |
| 3824.99.29.00 | Other[kg] | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 3.7¢/kg + 60% | Estimate → |
| Mixtures of two or more inorganic compounds: | |||||
| 3824.99.31.00 | Of bismuth[kg] | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 35% | Estimate → |
| 3824.99.32.00 | Of hydrosulfite compounds, of sulfoxylate compounds, or of both[kg] | 6.5% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 35% | Estimate → |
| 3824.99.33.00 | Of mercury[kg] | 4.2% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 26.3% | Estimate → |
| 3824.99.34.00 | Of molybdenum[kg] | 2.8% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 18% | Estimate → |
| 3824.99.35.00 | Of tungsten[kg] | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) | 45.5% | Estimate → |
| 3824.99.36.00 | Of vanadium[kg] | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 40% | Estimate → |
| 3824.99.39 | Other | Free | 25% | ||
| 3824.99.39.10 | Of lithium nickel cobalt manganese oxides[kg] | Estimate → | |||
| 3824.99.39.90 | Other[kg] | Estimate → | |||
| 3824.99.41 | Fatty substances of animal or vegetable origin and mixtures thereof | 4.6% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 16.5¢/kg + 30% | |
| 3824.99.41.40 | Mixtures of fatty acid esters[kg] | Estimate → | |||
| 3824.99.41.90 | Other[kg] | Estimate → | |||
| Other: | |||||
| 3824.99.49.00 | Mixtures that are in whole or in part of hydrocarbons derived in whole or in part from petroleum, shale oil or natural gas[kg] | 6.5% | Free (A+,AU,BH,CL,CO,D,E, IL,JO, K,KR,MA,OM,P, PA,PE,S,SG) | 25% | Estimate → |
| Mixtures of halogenated hydrocarbons: | |||||
| 3824.99.50.00 | Chlorinated but not otherwise halogenated[kg] | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 114.5% | Estimate → |
| 3824.99.55.00 | Other[kg] | 3.7% | Free (A+,AU,BH,CL,CO,D, E,IL, JO,K,KR,MA,OM,P, PA,PE,S,SG) | 25% | Estimate → |
| Other: | |||||
| 3824.99.70.00 | Mixtures of dibromo neopentyl glycol; Polydibromophenylene oxide; Tetrabromobisphenol-A-carbonate oligomers; and Electroplating chemical and electroless plating solutions and other materials for printed circuit boards, plastics and metal finishings[kg] | Free | 25% | Estimate → | |
| 3824.99.75 | Naphthenic acids, their water-insoluble salts and their esters | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | |
| 3824.99.75.10 | Naphthenic acids[kg] | Estimate → | |||
| 3824.99.75.50 | Other[kg] | Estimate → | |||
| 3824.99.93 | Other | 5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,JP,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | |
| Mixtures of acyclic, monohydric, unsubstituted alcohols: | |||||
| 3824.99.93.10 | Containing C11 or lower alcohols only[kg] | Estimate → | |||
| 3824.99.93.20 | Containing C12 or higher alcohols only[kg] | Estimate → | |||
| 3824.99.93.30 | Other[kg] | Estimate → | |||
| 3824.99.93.61 | Mixtures consisting mainly of chemicals containing a phosphorus atom to which is bonded one methyl, ethyl, n-propyl or isopropyl group, but no other carbon atoms[kg] | Estimate → | |||
| 3824.99.93.86 | Mixtures of a kind containing magnesium used as a desulfurization reagent[kg] | Estimate → | |||
| 3824.99.93.97 | Other[kg] | Estimate → |
53 lines shown. Statistical suffixes (the last two digits) inherit the rate of the 8-digit subheading above them.
Example: base duty and fees on $10000
For HTS 3824.10.00.00 at the general rate of 6%, shipped by ocean, before any Chapter 99 tariffs:
| Base duty (6%) | $600.00 |
| Merchandise Processing Fee (0.3464%, min $34.58) | $34.64 |
| Harbor Maintenance Fee (0.125%) | $12.50 |
| Duty and fees | $647.14 |
Origin-specific tariffs can multiply this. Run this example from China or from Mexico to see every line.
Special program codes in this heading
- A, A*, A+
- Generalized System of Preferences (GSP)
- AU
- U.S.–Australia FTA
- BH
- U.S.–Bahrain FTA
- CL
- U.S.–Chile FTA
- CO
- U.S.–Colombia Trade Promotion Agreement
- D
- African Growth and Opportunity Act (AGOA)
- E, E*
- Caribbean Basin Economic Recovery Act
- IL
- U.S.–Israel FTA
- JO
- U.S.–Jordan FTA
- JP
- U.S.–Japan Trade Agreement
- K
- Agreement on Trade in Pharmaceutical Products
- KR
- U.S.–Korea FTA (KORUS)
- MA
- U.S.–Morocco FTA
- OM
- U.S.–Oman FTA
- P, P+
- CAFTA-DR
- PA
- U.S.–Panama Trade Promotion Agreement
- PE
- U.S.–Peru Trade Promotion Agreement
- S, S+
- USMCA (United States–Mexico–Canada Agreement)
- SG
- U.S.–Singapore FTA
A special rate applies only when the goods qualify under that program's rules of origin and the claim is made at entry.
Frequently asked questions
What is the duty rate for HTS 3824?
Heading 3824 has 39 rate lines. The general (MFN) duty rates are 6.5% (16 lines), Free (7 lines), 5% (6 lines), 3.7% (4 lines). Products of free trade agreement partners may enter at the special rate, and Column 2 rates apply to countries without normal trade relations. Chapter 99 tariffs can be added on top: calculate the full amount.
Do Section 301, 232 or 201 tariffs apply to HTS 3824?
It depends on the 8- or 10-digit subheading, the country of origin, the entry date and, for Section 232, the metal content. These additional duties are listed in Chapter 99 of the HTS. The free duty calculator checks each program for a given code, origin and date and shows which apply and why.
What fees are added to an import under HTS 3824?
Formal entries pay the Merchandise Processing Fee of 0.3464% of value (minimum $34.58, maximum $670.86 in FY2027). Ocean shipments also pay the Harbor Maintenance Fee of 0.125% of value. See the import duty calculator for how they combine.