PlainTariff

HTS Chapter 38 · Section VI

Miscellaneous chemical products

Chapter 38 averages a 3.9% general (MFN) duty across its 182 rated tariff lines, with the steepest line reaching 6.5%.

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3.9%
avg MFN duty
6.5%
highest line
182
rated tariff lines
24%
enter duty-free

Tariff lines in Chapter 38 by duty-rate band

How the 182 rated lines in this chapter distribute across general (MFN) rate ranges

Duty-free440.1–5%805–10%58

Source: USITC HTS 2026 As of 2026

About HTS Chapter 38

HTS Chapter 38 - Miscellaneous chemical products - organizes 323 tariff classifications in the US Harmonized Tariff Schedule. Of these, 182 carry explicit duty rates at the tariff-line level, meaning importers can look up a specific Column 1 General (MFN) rate for every qualifying shipment. Chapter 38 sits within Section VI (Products of the Chemical or Allied Industries), which groups commercially related product categories together.

The average general duty rate across all tariff lines in this chapter is 3.9%, with the highest individual rate reaching 6.5%. Duty burden varies widely across tariff lines within this chapter, classification precision matters. Below, each line links to its individual detail page showing General, Special (FTA), and Column 2 rates.

Use this chapter page as the entry point for classifying any product that falls under miscellaneous chemical products. The tree below preserves the HTS indentation hierarchy (heading → subheading → tariff line), so you can narrow from broad category to specific 8-10 digit code. All data comes from the US International Trade Commission (USITC) HTS 2026 Basic Edition, the official schedule of import duties used by US Customs and Border Protection.

Chapter 38 At a Glance

Tariff distribution statistics for HTS Chapter 38 from USITC 2026 Basic Edition.
Metric Value Notes
Total tariff classifications 323 All headings, subheadings, and tariff lines.
Lines with explicit rates 182 Tariff lines carrying a Column 1 General duty.
Average general rate 3.9% Mean MFN rate across rated lines.
Highest line rate 6.5% Peak Column 1 General rate within the chapter.

Source: USITC Harmonized Tariff Schedule 2026 Basic Edition. Computed at last data refresh, see methodology.

Tariff Lines

3801 Artificial graphite; colloidal or semi-colloidal graphite; preparations based on graphite or other carbon in the form of pastes, blocks, plates or other semimanufactures:
3801.10 Artificial graphite:
3801.10.10.00 Plates, rods, powder and other forms, wholly or partly manufactured, for manufacturing into brushes for electric generators, motors or other machines or appliances
kg
3.7%
3801.10.50 Other
Free
3801.10.50.10 Surface-modified spherical graphite
kg
3801.10.50.90 Other
kg
3801.20.00.00 Colloidal or semi-colloidal graphite
kg
Free
3801.30.00.00 Carbonaceous pastes for electrodes and similar pastes for furnace linings
kg
4.9%
3801.90.00.00 Other
kg
4.9%
3802 Activated carbon; activated natural mineral products; animal black, including spent animal black:
3802.10.00 Activated carbon
4.8%
3802.10.00.10 Derived from coal
kg
3802.10.00.20 Derived from coconut
kg
3802.10.00.50 Other
kg
3802.90 Other:
3802.90.10.00 Bone black
kg
5.8%
3802.90.20.00 Activated clays and activated earths
kg
2.5%
3802.90.50.00 Other
kg
4.8%
3803.00.00.00 Tall oil, whether or not refined
kg
Free
3804.00 Residual 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:
3804.00.10.00 Lignin sulfonic acid and its salts
kg
Free
3804.00.50.00 Other
kg
3.7%
3805 Gum, 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:
3805.10.00.00 Gum, wood or sulfate turpentine oils
liters
5%
3805.90 Other:
3805.90.10.00 Pine oil
kg
Free
3805.90.50.00 Other
kg
3.7%
3806 Rosin and resin acids, and derivatives thereof; rosin spirit and rosin oils; run gums:
3806.10.00 Rosin and resin acids
5%
3806.10.00.10 Gum rosin
kg
3806.10.00.50 Other
kg
3806.20.00.00 Salts of rosin, of resin acids or of derivatives of rosin or resin acids, other than salts of rosin adducts
kg
3.7%
3806.30.00.00 Ester gums
kg
6.5%
3806.90.00.00 Other
kg
4.2%
3807.00.00.00 Wood tar; wood tar oils; wood creosote; wood naphtha; vegetable pitch; brewers' pitch and similar preparations based on rosin, resin acids or on vegetable pitch
kg
0.1%
3808 Insecticides, 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):
Good specified in subheading note 1 to this chapter:
3808.52.00.00 DDT (ISO) (clofenatone (INN)), in packings of a net weight content not exceeding 300 g
kg
6.5%
3808.59 Other:
3808.59.10.00 Containing any aromatic or modified aromatic pesticide
kg
6.5%
Other:
3808.59.40.00 Disinfectants
kg
5%
3808.59.50.00 Other
kg
5%
Good specified in subheading note 2 to this chapter:
3808.61 In packings of a net weight content not exceeding 300 g:
3808.61.10.00 Containing any aromatic or modified aromatic pesticide
kg
6.5%
3808.61.50.00 Other
kg
5%
3808.62 In packings of a net weight content exceeding 300 g but not exceeding 7.5 kg:
3808.62.10.00 Containing any aromatic or modified aromatic pesticide
kg
6.5%
3808.62.50.00 Other
kg
5%
3808.69 Other:
3808.69.10.00 Containing any aromatic or modified aromatic pesticide
kg
6.5%
3808.69.50.00 Other
kg
5%
Other:
3808.91 Insecticides:
3808.91.10.00 Fly ribbons (ribbon fly catchers)
kg
2.8%
Other:
Containing any aromatic or modified aromatic insecticide:
3808.91.15.00 Mixtures of N-[[(4-chlorophenyl)amino]- carbonyl]-2,6-difluorobenzamide and inert substances
kg
Free
3808.91.25.01 Other
kg
6.5%
3808.91.30.00 Containing an inorganic substance
kg
5%
3808.91.50.01 Other
kg
5%
3808.92 Fungicides:
Containing any aromatic or modified aromatic fungicide:
3808.92.05.00 Mixtures of dinocap and application adjuvants
kg
Free
3808.92.15.00 Other
kg
6.5%
Other:
Containing any fungicide which is a thioamide, thiocarbamate, dithiocarbamate, thiuram or isothiocyanate:
3808.92.24.00 Maneb; Zineb; Mancozeb; and Metiram
kg
Free
3808.92.28.00 Other
kg
3.7%
Other:
3808.92.30.00 Containing an inorganic substance
kg
5%
3808.92.50 Other
5%
3808.92.50.40 Formulated fungicides containing any 3-iodoprop-2-yn-1-yl butylcarbamate(IPBC)
kg
3808.92.50.80 Other
kg
3808.93 Herbicides, anti-sprouting products and plant-growth regulators:
Containing any aromatic or modified aromatic herbicide, anti-sprouting agent or plant-growth regulator:
3808.93.05.00 Mixtures of 2,6-dichlorobenzonitrile and inerts; Mixtures of 3,5-dichloro-N-(1,1-dimethyl-2- propynyl) benzamide (Pronamide) and application adjuvants; Mixtures of 2-[(1-ethoxyimino)butyl]-5-[2- ethylthiopropyl]-3-hydroxy-2-cyclohexen-1- one (Sethoxydim) and application adjuvants; Mixtures of ethyl 2-[4-[(6-chloro-2- benzoxazolyl)oxy]phenoxy]propanoate (Fenoxaprop-ethyl) and isooctyl 2,4-dichlorophenoxyacetate; Mixtures of isooctyl 2-methyl-4-chlorophen- oxyacetate and application adjuvants
kg
Free
3808.93.15.00 Other
kg
6.5%
Other:
3808.93.20.00 Containing an inorganic substance
kg
5%
3808.93.50 Other
5%
3808.93.50.10 Mixtures of 2-amino-4-[hydroxy(methyl)phosphonoyl] butanoic acid (glufosinate) or its salts or esters and application adjuvants
kg
3808.93.50.20 Mixtures of N-(phosphonomethyl) glycine (glyphosate) or its salts or esters and application adjuvants
kg
3808.93.50.40 Other
kg
3808.94 Disinfectants:
3808.94.10.00 Containing any aromatic or modified aromatic disinfectant
kg
6.5%
3808.94.50 Other
5%
3808.94.50.10 Wipes, other than paper wipes or nonwoven wipes, impregnated with alcohol or other disinfectants
kg
3808.94.50.50 Hydrogen peroxide put up in disinfectant preparations for sanitizing or disinfecting surfaces.
kg
3808.94.50.80 Alcohol-based hand sanitizer containing 60 percent or more by weight of ethanol, of a kind described in statistical note 1 to this chapter
kg
3808.94.50.95 Other
kg
3808.99 Other:
Containing any aromatic or modified aromatic pesticide:
3808.99.04.00 Mixtures of 1,1-bis(4-chlorophenyl)-2,2,2- trichloroethanol (Dicofol) and application adjuvants
kg
Free
3808.99.08.00 Other
kg
6.5%
Other:
3808.99.30.00 Formulated biocides based on 2-methyl-4-isothiazolin-3-one, or 2-n-octyl-4-isothiazolin-3-one, or 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one, or mixtures of 5-chloro-2-methyl-4- isothiazolin-3-one and 2-methyl-4- isothiazolin-3-one; and Metaldehyde
kg
Free
Other:
3808.99.70.00 Containing an inorganic substance
kg
5%
3808.99.95.01 Other
kg
5%
3809 Finishing 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:
3809.10.00.00 With a basis of amylaceous substances
kg
2.2¢/kg + 3%
Other:
3809.91.00.00 Of a kind used in the textile or like industries
kg
6%
3809.92 Of a kind used in the paper or like industries:
3809.92.10.00 Containing 5 percent or more by weight of one or more aromatic or modified aromatic substances
kg
6.5%
3809.92.50.00 Other
kg
6%
3809.93 Of a kind used in the leather or like industries:
3809.93.10.00 Containing 5 percent or more by weight of one or more aromatic or modified aromatic substances
kg
6.5%
3809.93.50.00 Other
kg
6%
3810 Pickling 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:
3810.10.00.00 Pickling preparations for metal surfaces; soldering, brazing or welding powders and pastes consisting of metal and other materials
kg
5%
3810.90 Other:
3810.90.10.00 Containing 5 percent or more by weight of one or more aromatic or modified aromatic substances
kg
6.5%
3810.90.20.00 Consisting wholly of inorganic substances
kg
Free
3810.90.50.00 Other
kg
5%
3811 Antiknock 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:
Antiknock preparations:
3811.11 Based on lead compounds:
3811.11.10.00 Based on tetraethyl lead or on a mixture of tetraethyl lead and tetramethyl lead
kg
Free
3811.11.50.00 Other
kg
Free
3811.19.00.00 Other
kg
6.5%
Additives for lubricating oils:
3811.21.00.00 Containing petroleum oils or oils obtained from bituminous minerals
kg
6.5%
3811.29.00.00 Other
kg
6.5%
3811.90.00.00 Other
kg
6.5%
3812 Prepared rubber accelerators; compound plasticizers for rubber or plastics, not elsewhere specified or included; antioxidizing preparations and other compound stabilizers for rubber or plastics:
3812.10 Prepared rubber accelerators:
3812.10.10.00 Containing any aromatic or modified aromatic rubber accelerator
kg
6.5%
3812.10.50.00 Other
kg
5%
3812.20 Compound plasticizers for rubber or plastics:
3812.20.10.00 Containing any aromatic or modified aromatic plasticizer
kg
6.5%
3812.20.50.00 Other
kg
5%
Anti-oxidizing preparations and other compound stabilizers for rubber or plastics:
3812.31.00.00 Mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ)
kg
6.5%
3812.39 Other:
Containing any aromatic or modified aromatic antioxidant or other stabilizer:
3812.39.20.00 Mixtures of N,N'-diaryl-p-phenylenediamines
kg
6.5%
3812.39.30.00 Master batches of poly[nitrilomethanetetraaryl- nitrilo[2,4,6- tris(1-methylethyl)-1,3- phenylene]]-2,6-bis(1-methylethyl)phenyl]-ω- [[[[2,6-bis(1-methylethyl)phenyl]amino]- methylene]amino]carbodiimide or 2,4-diisocyanate-1,3,5-tris(1-methylethyl)- benzene homopolymer with polyethylene, polyethylene terephthalate, or thermoplastic polyurethanes;Master batches of 3-(2H-benzotriazol-2-yl)-5- (tert-butyl)-4-hydroxybenzenepropanoic acid, C7-C9 branched or linear alkyl esters; andMaster batches of α-[3-[3-(2H-benzotriazol-2- yl)-5-(1,1-dimethylethyl)-4-hydroxyphenyl]-1- oxopropyl-ω-[3-[3-(2H-benzotriazol-2-yl)-5- (1,1-dimethylethyl)-4-hydroxyphenyl]-1-oxo- propyl] poly(oxyethylene)
kg
Free
3812.39.60.00 Other
kg
6.5%
Other:
3812.39.70.00 Bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate
kg
Free
3812.39.90.00 Other
kg
5%
3813.00 Preparations and charges for fire extinguishers; charged fire-extinguishing grenades:
3813.00.10.00 Consisting wholly of inorganic substances
kg
Free
3813.00.50.00 Other
kg
3.7%
3814.00 Organic composite solvents and thinners, not elsewhere specified or included; prepared paint or varnish removers:
3814.00.10.00 Containing 5 percent or more but not more than 25 percent by weight of one or more aromatic or modified aromatic substances
kg
6.5%
3814.00.20.00 Containing more than 25 percent by weight of one or more aromatic or modified aromatic substances
kg
6.5%
3814.00.50 Other
6%
3814.00.50.10 Containing methyl chloroform (1,1,1-trichloro- ethane) or carbon tetrachloride
kg
3814.00.50.90 Other
kg
3815 Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included:
Supported catalysts:
3815.11.00.00 With nickel or nickel compounds as the active substance
kg
Free
3815.12.00.00 With precious metal or precious metal compounds as the active substance
kg
Free
3815.19.00.00 Other
kg
Free
3815.90 Other:
Consisting wholly of inorganic substances:
3815.90.10.00 Of bismuth, of tungsten or of vanadium
kg
6.5%
3815.90.20.00 Of mercury or of molybdenum
kg
2.8%
3815.90.30.00 Other
kg
Free
3815.90.50.00 Other
kg
5%
3816 Refractory cements, mortars, concretes and similar compositions, including dolomite ramming mix, other than products of heading 3801:
3816.00.10.00 Dolomite ramming mix
t
Free
3816.00.20 Other
3%
3816.00.20.10 Clay
kg
3816.00.20.50 Other
kg
3817 Mixed alkylbenzenes and mixed alkylnaphthalenes, other than those of heading 2707 or 2902:
Mixed alkylbenzenes:
3817.00.10.00 Mixed linear alkylbenzenes
kg
6.5%
3817.00.15.00 Other
kg
6.5%
3817.00.20.00 Mixed alkylnaphthalenes
kg
6.5%
3818.00.00 Chemical elements doped for use in electronics, in the form of discs, wafers or similar forms; chemical compounds doped for use in electronics
Free
3818.00.00.10 Gallium arsenide wafers, doped
kg
3818.00.00.20 Polycrystalline silicon wafers, doped
kg
3818.00.00.30 Silicon carbide wafers, doped
kg
3818.00.00.95 Other
kg
3819.00.00 Hydraulic 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
6.5%
3819.00.00.10 Hydraulic brake fluids
kg
3819.00.00.90 Other
kg
3820.00.00.00 Antifreezing preparations and prepared deicing fluids
kg
6.5%
3821.00.00 Prepared culture media for development or maintenance of micro-organisms (including viruses and the like) or of plant, human or animal cells
5%
3821.00.00.10 Viral transport media
kg
3821.00.00.90 Other
kg
3822 Diagnostic 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:
Diagnostic 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:
3822.11.00.00 For malaria
kg
Free
3822.12.00.00 For Zika and other diseases transmitted by mosquitoes of the genus Aedes
kg
Free
3822.13.00.00 For blood-grouping
kg
Free
3822.19.00 Other
Free
Containing antigens or antisera:
3822.19.00.10 Containing methyl chloroform (1,1,1-trichloroethane) or carbon tetrachloride
kg
3822.19.00.30 Other
kg
Other:
3822.19.00.40 Containing methyl chloroform (1,1,1-trichloroethane) or carbon tetrachloride
kg
3822.19.00.80 Other
kg
3822.90.00.00 Certified reference materials
kg
Free
3823 Industrial monocarboxylic fatty acids; acid oils from refining; industrial fatty alcohols:
Industrial monocarboxylic fatty acids; acid oils from refining:
3823.11.00.00 Stearic acid
kg
2.1¢/kg + 3.8%
3823.12.00.00 Oleic acid
kg
2.1¢/kg + 3.2%
3823.13.00 Tall oil fatty acids
3.2%
3823.13.00.20 Containing less than two percent rosin
kg
3823.13.00.40 Other
kg
3823.19 Other:
3823.19.20.00 Derived from coconut, palm-kernel or palm oil
kg
2.3%
3823.19.40.00 Other
kg
3.2%
3823.70 Industrial fatty alcohols:
Derived from fatty substances of animal or vegetable origin:
3823.70.20.00 Oleyl
kg
5.1%
3823.70.40.00 Other
kg
2%
3823.70.60.00 Other
kg
2.4%
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
6%
3824.30.00.00 Nonagglomerated metal carbides mixed together or with metallic binders
kg
3.6%
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%
3824.40.20.00 Consisting wholly of inorganic substances
kg
Free
3824.40.50.00 Other
kg
5%
3824.50.00 Nonrefractory mortars and concretes
Free
3824.50.00.10 Wet
t
3824.50.00.50 Other
t
3824.60.00.00 Sorbitol other than that of subheading 2905.44
kg
4.9%
Goods specified in subheading note 3 to this chapter:
3824.81.00.00 Containing oxirane (ethylene oxide)
kg
5%
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%
3824.82.90.00 Other
kg
3.7%
3824.83.00.00 Containing tris(2,3-dibromopropyl) phospate
kg
5%
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%
3824.85.00.00 Containing 1,2,3,4,5,6-hexachlorocyclohexane (HCH (ISO)), including lindane (ISO,INN)
kg
6.5%
3824.86.00.00 Containing pentachlorobenzene (ISO) or hexachlorobenzene (ISO)
kg
6.5%
3824.87.00.00 Containing perfluorooctane sulfonic acid, its salts, perfluorooctane sulfonamides, or perfluorooctane sulfonyl fluoride
kg
3.7%
3824.88.00.00 Containing tetra-, penta-, hexa-, hepta-, or octabromodiphenyl ethers
kg
6.5%
3824.89.00.00 Containing short-chain chlorinated paraffins
kg
6.5%
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%
3824.92.00.00 Polyglycol esters of methylphosphonic acid.
kg
5%
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
3824.99.19.00 Other
kg
6.5%
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
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%
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
3824.99.29.00 Other
kg
6.5%
Mixtures of two or more inorganic compounds:
3824.99.31.00 Of bismuth
kg
6.5%
3824.99.32.00 Of hydrosulfite compounds, of sulfoxylate compounds, or of both
kg
6.5%
3824.99.33.00 Of mercury
kg
4.2%
3824.99.34.00 Of molybdenum
kg
2.8%
3824.99.35.00 Of tungsten
kg
6.5%
3824.99.36.00 Of vanadium
kg
6.5%
3824.99.39 Other
Free
3824.99.39.10 Of lithium nickel cobalt manganese oxides
kg
3824.99.39.90 Other
kg
3824.99.41 Fatty substances of animal or vegetable origin and mixtures thereof
4.6%
3824.99.41.40 Mixtures of fatty acid esters
kg
3824.99.41.90 Other
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
kg
6.5%
Mixtures of halogenated hydrocarbons:
3824.99.50.00 Chlorinated but not otherwise halogenated
kg
6.5%
3824.99.55.00 Other
kg
3.7%
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
3824.99.75 Naphthenic acids, their water-insoluble salts and their esters
3.7%
3824.99.75.10 Naphthenic acids
kg
3824.99.75.50 Other
kg
3824.99.93 Other
5%
Mixtures of acyclic, monohydric, unsubstituted alcohols:
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
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
kg
3825 Residual 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:
3825.10.01.00 Municipal waste
kg
Free
3825.20.00.00 Sewage sludge
kg
Free
3825.30.00.00 Clinical waste
kg
Free
Waste organic solvents:
3825.41.00.00 Halogenated
kg
Free
3825.49.00.00 Other
kg
Free
3825.50.00.00 Wastes of metal-pickling liquors, hydraulic fluids, brake fluids and anti-freeze fluids
kg
Free
Other wastes from the chemical or allied industries:
3825.61.00.00 Mainly containing organic constituents
kg
Free
3825.69.00.00 Other
kg
Free
3825.90.01.00 Other
kg
Free
3826.00 Biodiesel and mixtures thereof, not containing or containing less than 70 percent by weight of petroleum oils or oils obtained from bituminous materials:
3826.00.10.00 Biodiesel not containing petroleum oils or oils obtained from bituminous materials (B100)
kg
4.6%
3826.00.30.00 Other
kg
6.5%
3827 Mixtures containing halogenated derivatives of methane, ethane or propane, not elsewhere specified or included:
Containing chlorofluorocarbons (CFCs), whether or not containing hydrochlorofluorocarbons (HCFCs), perfluorocarbons (PFCs) or hydrofluorocarbons (HFCs); containing hydrobromofluorocarbons (HBFCs); containing carbon tetrachloride; containing 1,1,1-trichloroethane (methyl chloroform):
3827.11.00.00 Containing chlorofluorocarbons (CFCs), whether or not containing hydrochlorofluorocarbons (HCFCs), perfluorocarbons (PFCs) or hydrofluorocarbons (HFCs)
kg
3.7%
3827.12.00.00 Containing hydrobromofluorocarbons (HBFCs)
kg
3.7%
3827.13.00.00 Containing carbon tetrachloride
kg
6.5%
3827.14.00.00 Containing 1,1,1-trichloroethane (methyl chloroform)
kg
6.5%
3827.20.00.00 Containing bromochlorodifluoromethane (Halon-1211), bromotrifluoromethane (Halon-1301) or dibromotetrafluoroethanes (Halon-2402)
kg
3.7%
Containing hydrochlorofluorocarbons (HCFCs), whether or not containing perfluorocarbons (PFCs) or hydrofluorocarbons (HFCs), but not containing chlorofluorocarbons (CFCs):
3827.31.00.00 Containing substances of subheadings 2903.41 to 2903.48
kg
3.7%
3827.32.00.00 Other, containing substances of subheadings 2903.71 to 2903.75
kg
3.7%
3827.39.00.00 Other
kg
3.7%
3827.40.00.00 Containing methyl bromide (bromomethane) or bromochloromethane
kg
3.7%
Containing trifluoromethane (HFC-23) or perfluorocarbons (PFCs) but not containing chlorofluorocarbons (CFCs) or hydrochlorofluorocarbons (HCFCs):
3827.51.00.00 Containing trifluoromethane (HFC-23)
kg
3.7%
3827.59.00.00 Other
kg
3.7%
Containing other hydrofluorocarbons (HFCs) but not containing chlorofluorocarbons (CFCs) or hydrochlorofluorocarbons (HCFCs):
3827.61.00.00 Containing 15 percent or more by mass of 1,1,1-trifluoroethane (HFC-143a)
kg
3.7%
3827.62.00.00 Other, 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)
kg
3.7%
3827.63.00.00 Other, not included in the subheadings above, containing 40 percent or more by mass of pentafluoroethane (HFC-125)
kg
3.7%
3827.64.00.00 Other, 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)
kg
3.7%
3827.65.00.00 Other, 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)
kg
3.7%
3827.68.00.00 Other, not included in the subheadings above, containing substances of subheadings 2903.41 to 2903.48
kg
3.7%
3827.69.00.00 Other
kg
3.7%
3827.90 Other:
3827.90.10.00 Chlorinated but not otherwise halogenated
kg
6.5%
3827.90.90.00 Other
kg
3.7%
I. PRIMARY FORMS

Frequently Asked Questions

What does HTS Chapter 38 cover? ▼
HTS Chapter 38 covers Miscellaneous chemical products. It contains 323 individual tariff classifications, of which 182 have specified duty rates. This chapter falls under Section VI (Products of the Chemical or Allied Industries).
What is the average tariff rate for Chapter 38? ▼
The average general (MFN) duty rate across all tariff lines in Chapter 38 is 3.9%. The highest individual rate in this chapter is 6.5%. Actual duty on a specific product depends on its precise HTS classification.
How do I find the correct HTS code for my product? ▼
Browse the tariff lines listed below organized by heading and subheading. Each item with an HTS number links to its full detail page showing general, special, and Column 2 duty rates. For complex classifications, consult a licensed customs broker or contact US Customs and Border Protection (CBP).
Are there any duty-free items in Chapter 38? ▼
Yes, many chapters contain items with a "Free" general rate, meaning no duty is assessed for imports from most-favored-nation countries. Look for items marked "Free" in the tariff lines table below. Additional preferential rates may also apply under free trade agreements.
Where does PlainTariff get its tariff data? ▼
All tariff data comes from the U.S. International Trade Commission (USITC) Harmonized Tariff Schedule (HTS) 2026 Basic Edition, the official schedule of US import duties.

Learn More About Tariffs

📖

How Tariffs Work

A plain-language guide to US import duties

 🔍

Reading HTS Codes

How to decode the Harmonized Tariff Schedule

 📊

Most Tariffed Products

Which US imports carry the highest duties

 💰

Tariffs & Consumer Prices

How import duties affect what you pay

Next steps

Find the exact rate for your product within Chapter 38.

The chapter average is an orientation only, duty is set per tariff line, and Special preferential rates may apply to qualifying origins.

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Sources: U.S. International Trade Commission Harmonized Tariff Schedule (2026 Basic Edition) and FAO FAOSTAT Trade: Crops and Livestock. See our methodology for how figures are computed.

Every figure on PlainTariff is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.