Import duty / Chapter 38 / Heading 3824
Heading 3824 covers 17 tariff lines in LoadLoom's table; 14 of them clear duty-free under USMCA for goods made in Canada, the US or Mexico. Published US and Canadian rates below, verified October 2026. Pick the line that matches your goods for the worked example and border steps.
| HS code | Goods | US duty | Canada duty | USMCA |
|---|---|---|---|---|
| 3824.10 | Binders, prepared; for foundry moulds or cores | 6% | Free | Free with certificate |
| 3824.30 | Metal carbides, non-agglomerated; mixed together or with metallic binders | 3.6% | Free | Free with certificate |
| 3824.40 | Cements, mortars or concretes; their prepared additives | 6.5% | Free | Not eligible |
| 3824.50 | Mortars and concretes; non-refractory | Free | Free | Free with certificate |
| 3824.60 | Sorbitol; other than that of subheading no. 2905.44 | 4.9% | Free | Free with certificate |
| 3824.81 | Chemical products, mixtures and preparations; containing goods specified in Subheading Note 3 to this Chapter; containing oxirane (ethylene oxide) | 5% | Free | Free with certificate |
| 3824.82 | Chemical products, mixtures and preparations; containing goods specified in Subheading Note 3 to this Chapter; containing polychlorinated biphenyls (PCBs), polychlorinated terphenyls (PCTs) or polybrominated biphenyls (PBBs) | 6.5% | Free | Not eligible |
| 3824.83 | Chemical products, mixtures and preparations; containing goods specified in Subheading Note 3 to this Chapter; containing tris(2,3-dibromopropyl) phosphate | 5% | Free | Free with certificate |
| 3824.84 | Chemical products, mixtures and preparations; containing aldrin, camphechlor (toxaphene), chlordane, chlordecone, DDT (chlorfenotane, 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane), dieldrin, endosulfan, endrin, heptachlor or mirex | 6.5% | Free | Free with certificate |
| 3824.85 | Chemical products, mixtures and preparations; containing goods specified in Subheading Note 3 to this Chapter; containing 1,2,3,4,5,6-hexachlorocyclohexane (HCH (ISO)), including lindane (ISO, INN) | 6.5% | Free | Free with certificate |
| 3824.86 | Chemical products, mixtures and preparations; containing goods specified in Subheading Note 3 to this Chapter; containing pentachlorobenzene (ISO) or hexachlorobenzene (ISO) | 6.5% | Free | Free with certificate |
| 3824.87 | Chemical products, mixtures and preparations; containing goods specified in Subheading Note 3 to this Chapter; containing perfluorooctane sulphonic acid, its salts, perfluorooctane sulphonamides, or perfluorooctane sulphonyl fluoride | 3.7% | Free | Free with certificate |
| 3824.88 | Chemical products, mixtures and preparations; containing goods specified in Subheading Note 3 to this Chapter; containing tetra-, penta-, hexa-, hepta- or octabromodiphenyl ethers | 6.5% | Free | Free with certificate |
| 3824.89 | Chemical products, mixtures and preparations; containing goods specified in Subheading Note 3 to this Chapter; containing short-chain chlorinated paraffins | 6.5% | Free | Free with certificate |
| 3824.91 | Chemical products, mixtures and preparations; consisting mainly of (5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl)methyl methyl methylphosphonate and bis[(5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl)methyl] methylphosphonate | 5% | Free | Free with certificate |
| 3824.92 | Chemical products, mixtures and preparations; polyglycol esters of methylphosphonic acid | 5% | Free | Free with certificate |
| 3824.99 | Chemical products, mixtures and preparations; n.e.c. heading 3824 | Free | Free | Not eligible |
This page is a free reference for shippers, not a customs ruling. Final classification and duty are determined by the licensed customs broker at entry, and government amounts are always billed at actual. Rates change with each tariff edition and trade action.
