Ship & Customs · HS Chapter 38
HS codes, chapter 38.
The 17 four-digit headings of Harmonized System chapter 38, 3801 to 3827, as published in the US Harmonized Tariff Schedule. Each heading opens the free lookup with its ten-digit statistical lines, the Schedule B export numbers that share its first six digits, and the general duty rate on every line.
Catalog snapshot: August 23, 2026. Source: USITC Harmonized Tariff Schedule headings in the RevAddress tariff catalog.
| Heading | Covers |
|---|---|
| 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 |
| 3802 | Activated carbon; activated natural mineral products; animal black, including spent animal black |
| 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 |
| 3806 | Rosin and resin acids, and derivatives thereof; rosin spirit and rosin oils; run gums |
| 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) |
| 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 |
| 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 |
| 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 |
| 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 |
| 3815 | Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included |
| 3816 | Refractory cements, mortars, concretes and similar compositions, including dolomite ramming mix, other than products of heading 3801 |
| 3817 | Mixed alkylbenzenes and mixed alkylnaphthalenes, other than those of heading 2707 or 2902 |
| 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 |
| 3823 | Industrial monocarboxylic fatty acids; acid oils from refining; industrial fatty alcohols |
| 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 |
| 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 |
| 3827 | Mixtures containing halogenated derivatives of methane, ethane or propane, not elsewhere specified or included |
A four-digit heading is the family; customs forms want the full code. USPS customs forms take the ten-digit HTS number on outbound mail, and export filings take the Schedule B number. Open a heading in the lookupto pick the exact line, or search by what the product is in plain words.
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