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

Every line of heading 3824

• 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 (kg): General 6%; Special Free (A+,AU,BH,CL,CO,D,E, IL,JO, KR,MA,OM,P, PA,PE,S,SG); Column 2 25%.
• 3824.30.00.00 Nonagglomerated metal carbides mixed together or with metallic binders (kg): General 3.6%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 25%.
• 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): General 6.5%; Special Free (A+,AU,BH,CL,CO,D,E, IL,JO,KR,MA,OM,P, PA,PE,S,SG); Column 2 3.7¢/kg + 60%.
• 3824.40.20.00 Consisting wholly of inorganic substances (kg): General Free; Special none; Column 2 25%.
• 3824.40.50.00 Other (under: Prepared additives for cements, mortars or concretes) (kg): General 5%; Special Free (A+,AU,BH,CL,CO,D,E, IL,JO,KR,MA,OM,P, PA,PE,S,SG); Column 2 25%.
• 3824.50.00 Nonrefractory mortars and concretes: General Free; Special none; Column 2 20%.
• 3824.50.00.10 Wet (under: Nonrefractory mortars and concretes) (t).
• 3824.50.00.50 Other (under: Nonrefractory mortars and concretes) (t).
• 3824.60.00.00 Sorbitol other than that of subheading 2905.44 (kg): General 4.9%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 50%.
• 3824.81.00.00 Containing oxirane (ethylene oxide) (kg): General 5%; Special Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG); Column 2 25%.
• 3824.82 Containing polychlorinated biphenyls (PCBs), polychlorinated terphenyls ({PCTs) or polybrominated biphenyls (PBBs).
• 3824.82.10.00 Chlorinated but not otherwise halogenated (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG); Column 2 114.5%.
• 3824.82.90.00 Other (under: Containing polychlorinated biphenyls (PCBs), polychlorinated terphenyls ({PCTs) or polybrominated biphenyls (PBBs)) (kg): General 3.7%; Special Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG); Column 2 25%.
• 3824.83.00.00 Containing tris(2,3-dibromopropyl) phospate (kg): General 5%; Special Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG); Column 2 25%.
• 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): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG); Column 2 114.5%.
• 3824.85.00.00 Containing 1,2,3,4,5,6-hexachlorocyclohexane (HCH (ISO)), including lindane (ISO,INN) (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG); Column 2 114.5%.
• 3824.86.00.00 Containing pentachlorobenzene (ISO) or hexachlorobenzene (ISO) (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG); Column 2 3.7¢/kg + 60%.
• 3824.87.00.00 Containing perfluorooctane sulfonic acid, its salts, perfluorooctane sulfonamides, or perfluorooctane sulfonyl fluoride (kg): General 3.7%; Special Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG); Column 2 25%.
• 3824.88.00.00 Containing tetra-, penta-, hexa-, hepta-, or octabromodiphenyl ethers (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG); Column 2 3.7¢/kg + 60%.
• 3824.89.00.00 Containing short-chain chlorinated paraffins (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D,E, IL,JO, K,KR,MA,OM,P, PA,PE,S,SG); Column 2 25%.
• 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): General 5%; Special Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG); Column 2 25%.
• 3824.92.00.00 Polyglycol esters of methylphosphonic acid. (kg): General 5%; Special Free (A+,AU,BH,CL,CO,D,E,IL,JO,JP,K,KR,MA,OM,P,PA,PE,S,SG); Column 2 25%.
• 3824.99 Other (under: Other).
• 3824.99.11.00 In the form of ingots (under: Cultured crystals (other than optical elements of chapter 90), weighing not less than 2.5 g each) (kg): General Free; Special none; Column 2 25%.
• 3824.99.19.00 Other (under: Cultured crystals (other than optical elements of chapter 90), weighing not less than 2.5 g each) (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 50%.
• 3824.99.21.00 Consisting wholly of substances found naturally in coal tar, whether obtained from coal tar or other source (kg): General Free; Special none; Column 2 Free.
• 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): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG); Column 2 3.7¢/kg + 60%.
• 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): General Free; Special none; Column 2 3.7¢/kg + 60%.
• 3824.99.29.00 Other (under: Mixtures containing 5 percent or more by weight of one or more aromatic or modified aromatic substances) (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG); Column 2 3.7¢/kg + 60%.
• 3824.99.31.00 Of bismuth (under: Mixtures of two or more inorganic compounds) (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 35%.
• 3824.99.32.00 Of hydrosulfite compounds, of sulfoxylate compounds, or of both (kg): General 6.5%; Special Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 35%.
• 3824.99.33.00 Of mercury (under: Mixtures of two or more inorganic compounds) (kg): General 4.2%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 26.3%.
• 3824.99.34.00 Of molybdenum (under: Mixtures of two or more inorganic compounds) (kg): General 2.8%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 18%.
• 3824.99.35.00 Of tungsten (under: Mixtures of two or more inorganic compounds) (kg): General 6.5%; Special Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG); Column 2 45.5%.
• 3824.99.36.00 Of vanadium (under: Mixtures of two or more inorganic compounds) (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 40%.
• 3824.99.39 Other (under: Mixtures of two or more inorganic compounds): General Free; Special none; Column 2 25%.
• 3824.99.39.10 Of lithium nickel cobalt manganese oxides (kg).
• 3824.99.39.90 Other (under: Other) (kg).
• 3824.99.41 Fatty substances of animal or vegetable origin and mixtures thereof: General 4.6%; Special Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 16.5¢/kg + 30%.
• 3824.99.41.40 Mixtures of fatty acid esters (kg).
• 3824.99.41.90 Other (under: Fatty substances of animal or vegetable origin and mixtures thereof) (kg).
• 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): General 6.5%; Special Free (A+,AU,BH,CL,CO,D,E, IL,JO, K,KR,MA,OM,P, PA,PE,S,SG); Column 2 25%.
• 3824.99.50.00 Chlorinated but not otherwise halogenated (kg): General 6.5%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG); Column 2 114.5%.
• 3824.99.55.00 Other (under: Mixtures of halogenated hydrocarbons) (kg): General 3.7%; Special Free (A+,AU,BH,CL,CO,D, E,IL, JO,K,KR,MA,OM,P, PA,PE,S,SG); Column 2 25%.
• 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): General Free; Special none; Column 2 25%.
• 3824.99.75 Naphthenic acids, their water-insoluble salts and their esters: General 3.7%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 25%.
• 3824.99.75.10 Naphthenic acids (under: Naphthenic acids, their water-insoluble salts and their esters) (kg).
• 3824.99.75.50 Other (under: Naphthenic acids, their water-insoluble salts and their esters) (kg).
• 3824.99.93 Other (under: Other): General 5%; Special Free (A+,AU,BH,CL,CO,D,E,IL,JO,JP,K,KR,MA,OM,P,PA,PE,S,SG); Column 2 25%.
• 3824.99.93.10 Containing C11 or lower alcohols only (kg).
• 3824.99.93.20 Containing C12 or higher alcohols only (kg).
• 3824.99.93.30 Other (under: Mixtures of acyclic, monohydric, unsubstituted alcohols) (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 (kg).
• 3824.99.93.86 Mixtures of a kind containing magnesium used as a desulfurization reagent (kg).
• 3824.99.93.97 Other (under: Other) (kg).

About these rates

The rates are those printed in the 2026 HTS Revision 23, published by the U.S. International Trade Commission. A 10-digit statistical line takes the rates printed on the 8-digit line above it. Chapter 99 duties (Section 232, Section 301, IEEPA) depend on the product, the origin and the date, are charged on top, and are not included. A code here is a strong lead, not a ruling: confirm it with a customs broker or a CBP binding ruling.