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Section VI · Chemical and allied industries
Miscellaneous chemical products
108 subheadings in 27 headings. Open one for the published General, Special and Column 2 rates of every tariff line beneath it.
3801Artificial graphite; colloidal or semi-colloidal graphite; preparations based on graphite or other carbon in the form of pastes, blocks, plates or other semimanufactures
3802Activated carbon; activated natural mineral products; animal black, including spent animal black
3803Tall oil, whether or not refined
3804Residual lyes from the manufacture of wood pulp, whether or not concentrated, desugared or chemically treated, including lignin sulfonates, but excluding tall oil of heading 3803
3805Gum, wood or sulfate turpentine and other terpenic oils produced by the distillation or other treatment of coniferous woods; crude dipentene; sulfite turpentine and other crude para-cymene; pine oil containing alpha-terpineol as the main constituent
3806Rosin and resin acids, and derivatives thereof; rosin spirit and rosin oils; run gums
3807Wood tar; wood tar oils; wood creosote; wood naphtha; vegetable pitch; brewers' pitch and similar preparations based on rosin, resin acids or on vegetable pitch
3808Insecticides, rodenticides, fungicides, herbicides, antisprouting products and plant-growth regulators, disinfectants and similar products, put up in forms or packings for retail sale or as preparations or articles (for example, sulfur-treated bands, wicks and candles, and flypapers)
- 3808.52DDT (ISO) (clofenatone (INN)), in packings of a net weight content not exceeding 300 g
- 3808.59Other:
- 3808.61In packings of a net weight content not exceeding 300 g:
- 3808.62In packings of a net weight content exceeding 300 g but not exceeding 7.5 kg:
- 3808.69Other:
- 3808.91Insecticides:
- 3808.92Fungicides:
- 3808.93Herbicides, anti-sprouting products and plant-growth regulators:
- 3808.94Disinfectants:
- 3808.99Other:
3809Finishing agents, dye carriers to accelerate the dyeing or fixing of dyestuffs and other products and preparations (for example, dressings and mordants), of a kind used in the textile, paper, leather or like industries, not elsewhere specified or included
3810Pickling preparations for metal surfaces; fluxes and other auxiliary preparations for soldering, brazing or welding; soldering, brazing or welding powders and pastes consisting of metal and other materials; preparations of a kind used as cores or coatings for welding electrodes or rods
3811Antiknock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anti-corrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils
3812Prepared rubber accelerators; compound plasticizers for rubber or plastics, not elsewhere specified or included; antioxidizing preparations and other compound stabilizers for rubber or plastics
3813Preparations and charges for fire extinguishers; charged fire-extinguishing grenades
3814Organic composite solvents and thinners, not elsewhere specified or included; prepared paint or varnish removers
3815Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included
3816Refractory cements, mortars, concretes and similar compositions, including dolomite ramming mix, other than products of heading 3801
3817Mixed alkylbenzenes and mixed alkylnaphthalenes, other than those of heading 2707 or 2902
3818Chemical elements doped for use in electronics, in the form of discs, wafers or similar forms; chemical compounds doped for use in electronics
3819Hydraulic brake fluids and other prepared liquids for hydraulic transmission, not containing or containing less than 70 percent by weight of petroleum oils or oils obtained from bituminous minerals
3820Antifreezing preparations and prepared deicing fluids
3821Prepared culture media for development or maintenance of micro-organisms (including viruses and the like) or of plant, human or animal cells
3822Diagnostic or laboratory reagents on a backing, prepared diagnostic or laboratory reagents whether or not on a backing, whether or not put up in the form of kits, other than those of heading 3006; certified reference materials
3823Industrial monocarboxylic fatty acids; acid oils from refining; industrial fatty alcohols
3824Prepared 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
- 3824.10Prepared binders for foundry molds or cores
- 3824.30Nonagglomerated metal carbides mixed together or with metallic binders
- 3824.40Prepared additives for cements, mortars or concretes:
- 3824.50Nonrefractory mortars and concretes
- 3824.60Sorbitol other than that of subheading 2905.44
- 3824.81Containing oxirane (ethylene oxide)
- 3824.82Containing polychlorinated biphenyls (PCBs), polychlorinated terphenyls ({PCTs) or polybrominated biphenyls (PBBs):
- 3824.83Containing tris(2,3-dibromopropyl) phospate
- 3824.84Containing 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)
- 3824.85Containing 1,2,3,4,5,6-hexachlorocyclohexane (HCH (ISO)), including lindane (ISO,INN)
- 3824.86Containing pentachlorobenzene (ISO) or hexachlorobenzene (ISO)
- 3824.87Containing perfluorooctane sulfonic acid, its salts, perfluorooctane sulfonamides, or perfluorooctane sulfonyl fluoride
- 3824.88Containing tetra-, penta-, hexa-, hepta-, or octabromodiphenyl ethers
- 3824.89Containing short-chain chlorinated paraffins
- 3824.91Mixtures 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
- 3824.92Polyglycol esters of methylphosphonic acid.
- 3824.99Other:
3825Residual products of the chemical or allied industries, not elsewhere specified or included; municipal waste; sewage sludge; other wastes specified in note 6 to this chapter
3826Biodiesel and mixtures thereof, not containing or containing less than 70 percent by weight of petroleum oils or oils obtained from bituminous materials
3827Mixtures containing halogenated derivatives of methane, ethane or propane, not elsewhere specified or included
- 3827.11Containing chlorofluorocarbons (CFCs), whether or not containing hydrochlorofluorocarbons (HCFCs), perfluorocarbons (PFCs) or hydrofluorocarbons (HFCs)
- 3827.12Containing hydrobromofluorocarbons (HBFCs)
- 3827.13Containing carbon tetrachloride
- 3827.14Containing 1,1,1-trichloroethane (methyl chloroform)
- 3827.20Containing bromochlorodifluoromethane (Halon-1211), bromotrifluoromethane (Halon-1301) or dibromotetrafluoroethanes (Halon-2402)
- 3827.31Containing substances of subheadings 2903.41 to 2903.48
- 3827.32Other, containing substances of subheadings 2903.71 to 2903.75
- 3827.39Other
- 3827.40Containing methyl bromide (bromomethane) or bromochloromethane
- 3827.51Containing trifluoromethane (HFC-23)
- 3827.59Other
- 3827.61Containing 15 percent or more by mass of 1,1,1-trifluoroethane (HFC-143a)
- 3827.62Other, not included in the subheading above, containing 55 percent or more by mass of pentafluoroethane (HFC- 125) but not containing unsaturated fluorinated derivatives of acyclic hydrocarbons (HFOs)
- 3827.63Other, not included in the subheadings above, containing 40 percent or more by mass of pentafluoroethane (HFC-125)
- 3827.64Other, not included in the subheadings above, containing 30 percent or more by mass of 1,1,1,2-tetrafluoroethane (HFC-134a) but not containing unsaturated fluorinated derivatives of acyclic hydrocarbons (HFOs)
- 3827.65Other, not included in the subheadings above, containing 20 percent or more by mass of difluoromethane (HFC-32) and 20 percent or more by mass of pentafluoroethane (HFC-125)
- 3827.68Other, not included in the subheadings above, containing substances of subheadings 2903.41 to 2903.48
- 3827.69Other
- 3827.90Other:
Source: U.S. International Trade Commission (USITC) — 2026 HTS Revision 12, released 2026-07-21. Listed rates are not always the rate collected — verify with your licensed customs broker.