# HTS 3824: 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:

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Source: [2026 HTS Revision 21 (October 9, 2026)](https://hts.usitc.gov/search?query=3824). Additional duties by country of origin may apply; estimate a shipment's full duty with the tariff calculator: https://geopax.app/tariffs/calculator

## 3824: 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:

| Code | Description | General | Special | Column 2 | Units |
| --- | --- | --- | --- | --- | --- |
| 3824 | 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: |  |  |  |  |
| 3824.10.00.00 |   Prepared binders for foundry molds or cores | 6% | Free (A+,AU,BH,CL,CO,D,E, IL,JO, KR,MA,OM,P, PA,PE,S,SG) | 25% | kg |
| 3824.30.00.00 |   Nonagglomerated metal carbides mixed together or with metallic binders | 3.6% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |
| 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 | 6.5% | Free (A+,AU,BH,CL,CO,D,E, IL,JO,KR,MA,OM,P, PA,PE,S,SG) | 3.7¢/kg + 60% | kg |
| 3824.40.20.00 |     Consisting wholly of inorganic substances | Free |  | 25% | kg |
| 3824.40.50.00 |     Other | 5% | Free (A+,AU,BH,CL,CO,D,E, IL,JO,KR,MA,OM,P, PA,PE,S,SG) | 25% | kg |
| 3824.50.00 |   Nonrefractory mortars and concretes | Free |  | 20% |  |
| 3824.50.00.10 |     Wet | Free |  | 20% | t |
| 3824.50.00.50 |     Other | Free |  | 20% | t |
| 3824.60.00.00 |   Sorbitol other than that of subheading 2905.44 | 4.9% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 50% | kg |
|  |   Goods specified in subheading note 3 to this chapter: |  |  |  |  |
| 3824.81.00.00 |     Containing oxirane (ethylene oxide) | 5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |
| 3824.82 |     Containing polychlorinated biphenyls (PCBs), polychlorinated terphenyls ({PCTs) or polybrominated biphenyls (PBBs): |  |  |  |  |
| 3824.82.10.00 |       Chlorinated but not otherwise halogenated | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 114.5% | kg |
| 3824.82.90.00 |       Other | 3.7% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |
| 3824.83.00.00 |     Containing tris(2,3-dibromopropyl) phospate | 5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |
| 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) | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 114.5% | kg |
| 3824.85.00.00 |     Containing 1,2,3,4,5,6-hexachlorocyclohexane (HCH (ISO)), including lindane (ISO,INN) | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 114.5% | kg |
| 3824.86.00.00 |     Containing pentachlorobenzene (ISO) or hexachlorobenzene (ISO) | 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% | kg |
| 3824.87.00.00 |     Containing perfluorooctane sulfonic acid, its salts, perfluorooctane sulfonamides, or perfluorooctane sulfonyl fluoride | 3.7% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |
| 3824.88.00.00 |     Containing tetra-, penta-, hexa-, hepta-, or octabromodiphenyl ethers | 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% | kg |
| 3824.89.00.00 |     Containing short-chain chlorinated paraffins | 6.5% | Free (A+,AU,BH,CL,CO,D,E, IL,JO, K,KR,MA,OM,P, PA,PE,S,SG) | 25% | kg |
|  |   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 | 5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |
| 3824.92.00.00 |     Polyglycol esters of methylphosphonic acid. | 5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,JP,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |
| 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 | Free |  | 25% | kg |
| 3824.99.19.00 |         Other | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 50% | kg |
|  |       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 | Free |  | Free | kg |
| 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 | 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% | kg |
| 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 | Free |  | 3.7¢/kg + 60% | kg |
| 3824.99.29.00 |           Other | 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% | kg |
|  |         Mixtures of two or more inorganic compounds: |  |  |  |  |
| 3824.99.31.00 |           Of bismuth | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 35% | kg |
| 3824.99.32.00 |           Of hydrosulfite compounds, of sulfoxylate compounds, or of both | 6.5% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 35% | kg |
| 3824.99.33.00 |           Of mercury | 4.2% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 26.3% | kg |
| 3824.99.34.00 |           Of molybdenum | 2.8% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 18% | kg |
| 3824.99.35.00 |           Of tungsten | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) | 45.5% | kg |
| 3824.99.36.00 |           Of vanadium | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 40% | kg |
| 3824.99.39 |           Other | Free |  | 25% |  |
| 3824.99.39.10 |           Of lithium nickel cobalt manganese oxides | Free |  | 25% | kg |
| 3824.99.39.90 |           Other | Free |  | 25% | kg |
| 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 | 4.6% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 16.5¢/kg + 30% | kg |
| 3824.99.41.90 |           Other | 4.6% | Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 16.5¢/kg + 30% | kg |
|  |         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 | 6.5% | Free (A+,AU,BH,CL,CO,D,E, IL,JO, K,KR,MA,OM,P, PA,PE,S,SG) | 25% | kg |
|  |           Mixtures of halogenated hydrocarbons: |  |  |  |  |
| 3824.99.50.00 |           Chlorinated but not otherwise halogenated | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) | 114.5% | kg |
| 3824.99.55.00 |           Other | 3.7% | Free (A+,AU,BH,CL,CO,D, E,IL, JO,K,KR,MA,OM,P, PA,PE,S,SG) | 25% | kg |
|  |           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 | Free |  | 25% | kg |
| 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 | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |
| 3824.99.75.50 |           Other | 3.7% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |
| 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: | 5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,JP,K,KR,MA,OM,P,PA,PE,S,SG) | 25% |  |
| 3824.99.93.10 |           Containing C11 or lower alcohols only | 5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,JP,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |
| 3824.99.93.20 |           Containing C12 or higher alcohols only | 5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,JP,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |
| 3824.99.93.30 |           Other | 5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,JP,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |
| 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 | 5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,JP,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |
| 3824.99.93.86 |           Mixtures of a kind containing magnesium used as a desulfurization reagent | 5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,JP,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |
| 3824.99.93.97 |           Other | 5% | Free (A+,AU,BH,CL,CO,D,E,IL,JO,JP,K,KR,MA,OM,P,PA,PE,S,SG) | 25% | kg |