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Chapter 38

Miscellaneous Chemical Products

By TariffCenter Research Team · Updated 2026-02-07 · Source: USITC Harmonized Tariff Schedule

At a glance

Chapter 38 contains 281 HTS lines covering miscellaneous chemical products. General U.S. duty rates: Free to 6.5%. Section 301 surcharges apply on selected lines for imports from China. Reciprocal tariffs apply following the February 2026 SCOTUS ruling.

3801Artificial graphite; colloidal or semi-colloidal graphite; preparations based on graphite or other carbon in the form of pastes, blocks, plates or other semimanufactures

#

Heading 3801 contains 11 HTS lines. General U.S. duty rates: Free–4.9%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

3802Activated carbon; activated natural mineral products; animal black, including spent animal black

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Heading 3802 contains 9 HTS lines. General U.S. duty rates: Free–5.8%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

3803Tall oil, whether or not refined

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Heading 3803 contains 1 HTS line. General U.S. duty rates: Free. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

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

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Heading 3804 contains 3 HTS lines. General U.S. duty rates: Free–3.7%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

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

#

Heading 3805 contains 5 HTS lines. General U.S. duty rates: Free–5%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

3806Rosin and resin acids, and derivatives thereof; rosin spirit and rosin oils; run gums

#

Heading 3806 contains 7 HTS lines. General U.S. duty rates: Free–6.5%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

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

#

Heading 3807 contains 1 HTS line. General U.S. duty rates: 0.1%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

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)

#

Heading 3808 contains 51 HTS lines. General U.S. duty rates: Free–6.5%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

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):

Free

301: 25%Recip: 10%

3808.52.00.00

DDT (ISO) (clofenatone (INN)), in packings of a net weight content not exceeding 300 g

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3808.59

Other:

Free

301: 25%Recip: 10%

3808.59.10.00

Containing any aromatic or modified aromatic pesticide

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3808.59.40.00

Disinfectants

5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH, CL,CO,D,E,IL, JO,K,KR,MA,OM,P, PA,PE,S,SG)

3808.59.50.00

Other

5%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

3808.61

In packings of a net weight content not exceeding 300 g:

Free

301: 25%Recip: 10%

3808.61.10.00

Containing any aromatic or modified aromatic pesticide

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3808.61.50.00

Other

5%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

3808.62

In packings of a net weight content exceeding 300 g but not exceeding 7.5 kg:

Free

301: 25%Recip: 10%

3808.62.10.00

Containing any aromatic or modified aromatic pesticide

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3808.62.50.00

Other

5%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3808.69

Other:

Free

301: 25%Recip: 10%

3808.69.10.00

Containing any aromatic or modified aromatic pesticide

6.5%

301: 25%Recip: 10%hts_special: Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3808.69.50.00

Other

5%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3808.91

Insecticides:

Free

301: 25%Recip: 10%

3808.91.10.00

Fly ribbons (ribbon fly catchers)

2.8%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3808.91.15.00

Mixtures of N-[[(4-chlorophenyl)amino]- carbonyl]-2,6-difluorobenzamide and inert substances

Free

301: 25%Recip: 10%

3808.91.25.01

Other

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3808.91.30.00

Containing an inorganic substance

5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3808.91.50.01

Other

5%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3808.92

Fungicides:

Free

301: 25%Recip: 10%

3808.92.05.00

Mixtures of dinocap and application adjuvants

Free

301: 25%Recip: 10%

3808.92.15.00

Other

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3808.92.24.00

Maneb; Zineb; Mancozeb; and Metiram

Free

301: 25%Recip: 10%

3808.92.28.00

Other

3.7%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3808.92.30.00

Containing an inorganic substance

5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3808.92.50

Other

5%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3808.92.50.40

Formulated fungicides containing any 3-iodoprop-2-yn-1-yl butylcarbamate(IPBC)

Free

301: 25%Recip: 10%

3808.92.50.80

Other

Free

301: 25%Recip: 10%

3808.93

Herbicides, anti-sprouting products and plant-growth regulators:

Free

301: 25%Recip: 10%

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

Free

301: 25%Recip: 10%

3808.93.15.00

Other

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3808.93.20.00

Containing an inorganic substance

5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3808.93.50

Other

5%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3808.93.50.10

Mixtures of 2-amino-4-[hydroxy(methyl)phosphonoyl] butanoic acid (glufosinate) or its salts or esters and application adjuvants

Free

301: 25%Recip: 10%

3808.93.50.20

Mixtures of N-(phosphonomethyl) glycine (glyphosate) or its salts or esters and application adjuvants

Free

301: 25%Recip: 10%

3808.93.50.40

Other

Free

301: 25%Recip: 10%

3808.94

Disinfectants:

Free

301: 25%Recip: 10%

3808.94.10.00

Containing any aromatic or modified aromatic disinfectant

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

3808.94.50

Other

5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

3808.94.50.10

Wipes, other than paper wipes or nonwoven wipes, impregnated with alcohol or other disinfectants

Free

301: 25%Recip: 10%

3808.94.50.50

Hydrogen peroxide put up in disinfectant preparations for sanitizing or disinfecting surfaces.

Free

301: 25%Recip: 10%

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

Free

301: 25%Recip: 10%

3808.94.50.95

Other

Free

301: 25%Recip: 10%

3808.99

Other:

Free

301: 25%Recip: 10%

3808.99.04.00

Mixtures of 1,1-bis(4-chlorophenyl)-2,2,2- trichloroethanol (Dicofol) and application adjuvants

Free

301: 25%Recip: 10%

3808.99.08.00

Other

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

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

Free

301: 25%Recip: 10%

3808.99.70.00

Containing an inorganic substance

5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3808.99.95.01

Other

5%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG)

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

#

Heading 3809 contains 9 HTS lines. General U.S. duty rates: Free–6.5%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

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

#

Heading 3810 contains 6 HTS lines. General U.S. duty rates: Free–6.5%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

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

#

Heading 3811 contains 8 HTS lines. General U.S. duty rates: Free–6.5%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

3812Prepared rubber accelerators; compound plasticizers for rubber or plastics, not elsewhere specified or included; antioxidizing preparations and other compound stabilizers for rubber or plastics

#

Heading 3812 contains 14 HTS lines. General U.S. duty rates: Free–6.5%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

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:

Free

301: 25%Recip: 10%

3812.10

Prepared rubber accelerators:

Free

301: 25%Recip: 10%

3812.10.10.00

Containing any aromatic or modified aromatic rubber accelerator

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3812.10.50.00

Other

5%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG)

3812.20

Compound plasticizers for rubber or plastics:

Free

301: 25%Recip: 10%

3812.20.10.00

Containing any aromatic or modified aromatic plasticizer

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3812.20.50.00

Other

5%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG)

3812.31.00.00

Mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ)

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

3812.39

Other:

Free

301: 25%Recip: 10%

3812.39.20.00

Mixtures of N,N'-diaryl-p-phenylenediamines

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

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)

Free

301: 25%Recip: 10%

3812.39.60.00

Other

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3812.39.70.00

Bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate

Free

301: 25%Recip: 10%

3812.39.90.00

Other

5%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG)

3813Preparations and charges for fire extinguishers; charged fire-extinguishing grenades

#

Heading 3813 contains 3 HTS lines. General U.S. duty rates: Free–3.7%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

3814Organic composite solvents and thinners, not elsewhere specified or included; prepared paint or varnish removers

#

Heading 3814 contains 6 HTS lines. General U.S. duty rates: Free–6.5%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

3815Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included

#

Heading 3815 contains 11 HTS lines. General U.S. duty rates: Free–6.5%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

3816Refractory cements, mortars, concretes and similar compositions, including dolomite ramming mix, other than products of heading 3801

#

Heading 3816 contains 5 HTS lines. General U.S. duty rates: Free–3%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

3817Mixed alkylbenzenes and mixed alkylnaphthalenes, other than those of heading 2707 or 2902

#

Heading 3817 contains 4 HTS lines. General U.S. duty rates: Free–6.5%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

3818Chemical elements doped for use in electronics, in the form of discs, wafers or similar forms; chemical compounds doped for use in electronics

#

Heading 3818 contains 5 HTS lines. General U.S. duty rates: Free. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

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

#

Heading 3819 contains 3 HTS lines. General U.S. duty rates: Free–6.5%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

3820Antifreezing preparations and prepared deicing fluids

#

Heading 3820 contains 1 HTS line. General U.S. duty rates: 6.5%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

3821Prepared culture media for development or maintenance of micro-organisms (including viruses and the like) or of plant, human or animal cells

#

Heading 3821 contains 3 HTS lines. General U.S. duty rates: Free–5%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

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

#

Heading 3822 contains 10 HTS lines. General U.S. duty rates: Free. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

3823Industrial monocarboxylic fatty acids; acid oils from refining; industrial fatty alcohols

#

Heading 3823 contains 13 HTS lines. General U.S. duty rates: Free–5.1%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

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

#

Heading 3824 contains 57 HTS lines. General U.S. duty rates: Free–6.5%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

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:

Free

301: 25%Recip: 10%

3824.10.00.00

Prepared binders for foundry molds or cores

6%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D,E, IL,JO, KR,MA,OM,P, PA,PE,S,SG)

3824.30.00.00

Nonagglomerated metal carbides mixed together or with metallic binders

3.6%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3824.40

Prepared additives for cements, mortars or concretes:

Free

301: 25%Recip: 10%

3824.40.10.00

Containing 5 percent or more by weight of one or more aromatic or modified aromatic substances

6.5%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D,E, IL,JO,KR,MA,OM,P, PA,PE,S,SG)

3824.40.20.00

Consisting wholly of inorganic substances

Free

301: 25%Recip: 10%

3824.40.50.00

Other

5%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D,E, IL,JO,KR,MA,OM,P, PA,PE,S,SG)

3824.50.00

Nonrefractory mortars and concretes

Free

301: 25%Recip: 10%

3824.50.00.10

Wet

Free

301: 25%Recip: 10%

3824.50.00.50

Other

Free

301: 25%Recip: 10%

3824.60.00.00

Sorbitol other than that of subheading 2905.44

4.9%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3824.81.00.00

Containing oxirane (ethylene oxide)

5%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

3824.82

Containing polychlorinated biphenyls (PCBs), polychlorinated terphenyls ({PCTs) or polybrominated biphenyls (PBBs):

Free

301: 25%Recip: 10%

3824.82.10.00

Chlorinated but not otherwise halogenated

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

3824.82.90.00

Other

3.7%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

3824.83.00.00

Containing tris(2,3-dibromopropyl) phospate

5%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

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%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

3824.85.00.00

Containing 1,2,3,4,5,6-hexachlorocyclohexane (HCH (ISO)), including lindane (ISO,INN)

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

3824.86.00.00

Containing pentachlorobenzene (ISO) or hexachlorobenzene (ISO)

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

3824.87.00.00

Containing perfluorooctane sulfonic acid, its salts, perfluorooctane sulfonamides, or perfluorooctane sulfonyl fluoride

3.7%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

3824.88.00.00

Containing tetra-, penta-, hexa-, hepta-, or octabromodiphenyl ethers

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

3824.89.00.00

Containing short-chain chlorinated paraffins

6.5%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D,E, IL,JO, K,KR,MA,OM,P, PA,PE,S,SG)

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%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

3824.92.00.00

Polyglycol esters of methylphosphonic acid.

5%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D,E,IL,JO,JP,K,KR,MA,OM,P,PA,PE,S,SG)

3824.99

Other:

Free

301: 25%Recip: 10%

3824.99.11.00

In the form of ingots

Free

301: 25%Recip: 10%

3824.99.19.00

Other

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3824.99.21.00

Consisting wholly of substances found naturally in coal tar, whether obtained from coal tar or other source

Free

301: 25%Recip: 10%

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%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

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

301: 25%Recip: 10%

3824.99.29.00

Other

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

3824.99.31.00

Of bismuth

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3824.99.32.00

Of hydrosulfite compounds, of sulfoxylate compounds, or of both

6.5%

301: 25%Recip: 10%hts_special: Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3824.99.33.00

Of mercury

4.2%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3824.99.34.00

Of molybdenum

2.8%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3824.99.35.00

Of tungsten

6.5%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG)

3824.99.36.00

Of vanadium

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3824.99.39

Other

Free

301: 25%Recip: 10%

3824.99.39.10

Of lithium nickel cobalt manganese oxides

Free

301: 25%Recip: 10%

3824.99.39.90

Other

Free

301: 25%Recip: 10%

3824.99.41

Fatty substances of animal or vegetable origin and mixtures thereof

4.6%

301: 25%Recip: 10%hts_special: Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3824.99.41.40

Mixtures of fatty acid esters

Free

301: 25%Recip: 10%

3824.99.41.90

Other

Free

301: 25%Recip: 10%

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%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D,E, IL,JO, K,KR,MA,OM,P, PA,PE,S,SG)

3824.99.50.00

Chlorinated but not otherwise halogenated

6.5%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)

3824.99.55.00

Other

3.7%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D, E,IL, JO,K,KR,MA,OM,P, PA,PE,S,SG)

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

301: 25%Recip: 10%

3824.99.75

Naphthenic acids, their water-insoluble salts and their esters

3.7%

301: 25%Recip: 10%hts_special: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)

3824.99.75.10

Naphthenic acids

Free

301: 25%Recip: 10%

3824.99.75.50

Other

Free

301: 25%Recip: 10%

3824.99.93

Other

5%

301: 25%Recip: 10%hts_special: Free (A+,AU,BH,CL,CO,D,E,IL,JO,JP,K,KR,MA,OM,P,PA,PE,S,SG)

3824.99.93.10

Containing C11 or lower alcohols only

Free

301: 25%Recip: 10%

3824.99.93.20

Containing C12 or higher alcohols only

Free

301: 25%Recip: 10%

3824.99.93.30

Other

Free

301: 25%Recip: 10%

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

Free

301: 25%Recip: 10%

3824.99.93.86

Mixtures of a kind containing magnesium used as a desulfurization reagent

Free

301: 25%Recip: 10%

3824.99.93.97

Other

Free

301: 25%Recip: 10%

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

#

Heading 3825 contains 10 HTS lines. General U.S. duty rates: Free. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

3826Biodiesel and mixtures thereof, not containing or containing less than 70 percent by weight of petroleum oils or oils obtained from bituminous materials

#

Heading 3826 contains 3 HTS lines. General U.S. duty rates: Free–6.5%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

3827Mixtures containing halogenated derivatives of methane, ethane or propane, not elsewhere specified or included

#

Heading 3827 contains 22 HTS lines. General U.S. duty rates: Free–6.5%. Section 301 surcharges (25%) and reciprocal tariffs (10%) apply to selected lines.

3827

Mixtures containing halogenated derivatives of methane, ethane or propane, not elsewhere specified or included:

Free

301: 25%Recip: 10%hts_special:

3827.11.00.00

Containing chlorofluorocarbons (CFCs), whether or not containing hydrochlorofluorocarbons (HCFCs), perfluorocarbons (PFCs) or hydrofluorocarbons (HFCs)

3.7%

301: 25%Recip: 10%hts_special: Free (A+, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM,P, PA, PE, S, SG)

3827.12.00.00

Containing hydrobromofluorocarbons (HBFCs)

3.7%

301: 25%Recip: 10%hts_special: Free (A+, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM,P, PA, PE, S, SG)

3827.13.00.00

Containing carbon tetrachloride

6.5%

301: 25%Recip: 10%hts_special: Free (A, AU, BH, CL, CO, D, E, IL, JO, K, KR, MA, OM, P,PA, PE, S, SG)

3827.14.00.00

Containing 1,1,1-trichloroethane (methyl chloroform)

6.5%

301: 25%Recip: 10%hts_special: Free (A, AU, BH, CL, CO, D, E, IL, JO, K, KR, MA, OM, P,PA, PE, S, SG)

3827.20.00.00

Containing bromochlorodifluoromethane (Halon-1211), bromotrifluoromethane (Halon-1301) or dibromotetrafluoroethanes (Halon-2402)

3.7%

301: 25%Recip: 10%hts_special: Free (A+, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM,P, PA, PE, S, SG)

3827.31.00.00

Containing substances of subheadings 2903.41 to 2903.48

3.7%

301: 25%Recip: 10%hts_special: Free (A+, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM,P, PA, PE, S, SG)

3827.32.00.00

Other, containing substances of subheadings 2903.71 to 2903.75

3.7%

301: 25%Recip: 10%hts_special: Free (A+, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM,P, PA, PE, S, SG)

3827.39.00.00

Other

3.7%

301: 25%Recip: 10%hts_special: Free (A+, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM,P, PA, PE, S, SG)

3827.40.00.00

Containing methyl bromide (bromomethane) or bromochloromethane

3.7%

301: 25%Recip: 10%hts_special: Free (A+, AU, BH, CL, CO, D, E, IL, JO, K, KR, MA,OM, P, PA, PE, S, SG)

3827.51.00.00

Containing trifluoromethane (HFC-23)

3.7%

301: 25%Recip: 10%hts_special: Free (A+, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM,P, PA, PE, S, SG)

3827.59.00.00

Other

3.7%

301: 25%Recip: 10%hts_special: Free (A+, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM,P, PA, PE, S, SG)

3827.61.00.00

Containing 15 percent or more by mass of 1,1,1-trifluoroethane (HFC-143a)

3.7%

301: 25%Recip: 10%hts_special: Free (A+, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM,P, PA, PE, S, SG)

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)

3.7%

301: 25%Recip: 10%hts_special: Free (A+, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM,P, PA, PE, S, SG)

3827.63.00.00

Other, not included in the subheadings above, containing 40 percent or more by mass of pentafluoroethane (HFC-125)

3.7%

301: 25%Recip: 10%hts_special: Free (A+, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM,P, PA, PE, S, SG)

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)

3.7%

301: 25%Recip: 10%hts_special: Free (A+, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM,P, PA, PE, S, SG)

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)

3.7%

301: 25%Recip: 10%hts_special: Free (A+, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM,P, PA, PE, S, SG)

3827.68.00.00

Other, not included in the subheadings above, containing substances of subheadings 2903.41 to 2903.48

3.7%

301: 25%Recip: 10%hts_special: Free (A+, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM,P, PA, PE, S, SG)

3827.69.00.00

Other

3.7%

301: 25%Recip: 10%hts_special: Free (A+, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM,P, PA, PE, S, SG)

3827.90

Other:

Free

301: 25%Recip: 10%hts_special:

3827.90.10.00

Chlorinated but not otherwise halogenated

6.5%

301: 25%Recip: 10%hts_special: Free (A, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM, P,PA, PE, S, SG)

3827.90.90.00

Other

3.7%

301: 25%Recip: 10%hts_special: Free (A+, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM,P, PA, PE, S, SG)

Frequently Asked Questions — Chapter 38

Sources & Methodology

Glossary

General rate (MFN rate)
The base import duty applied to all World Trade Organization members under Most-Favored-Nation treatment. This is the standard rate shown in the General Rate column.
Section 301 tariff (301: 25%)
An additional surcharge authorized under Section 301 of the Trade Act of 1974, imposed on selected imports from China. The most common rate is 25%; some products carry 7.5%. Applied on top of the MFN base rate.
Reciprocal tariff (Recip: 10%)
Tariffs applied under the post-February 2026 SCOTUS ruling upholding Section 122 authority. Typically 10–25% depending on country of origin, stacked on top of base and Section 301 rates.
Section 232 tariff (S232: 25%)
Tariffs on steel and aluminum products (and downstream derivatives) imposed under Section 232 of the Trade Expansion Act of 1962 on national security grounds.
hts_special / Special rates
Preferential duty rates available to imports from countries with Free Trade Agreements or other special trade programs with the U.S. Country codes: AU (Australia), BH (Bahrain), CA (Canada), CL (Chile), CO (Colombia), IL (Israel), JO (Jordan), KR (South Korea), MA (Morocco), MX (Mexico), OM (Oman), PA (Panama), PE (Peru), SG (Singapore). Free (AU,BH...) means duty-free treatment for those partners.