Analysis
HTS 3824.50.00 covers nonrefractory mortars and concretes under heading 3824 (prepared binders for foundry molds or cores; chemical products and preparations of the…). US Customs collects import statistics for it under 2 ten-digit suffixes, reported in metric tons.
Neighbouring lines carry rates from duty-free to 6.5%, so the exact line matters. The widest gap is with 3824.99.50 (chlorinated but not otherwise halogenated), at 6.5%: a product that belongs there but is entered here, or the reverse, changes the duty by 6.5 percentage points.
For statistics it divides in two: 3824.50.00.10 for wet and 3824.50.00.50 for other. Both pay the same duty; the suffix records which kind was imported.
Goods classified here enter the United States duty-free at the general (normal trade relations) rate, as do about 25% of the 179 tariff lines in chapter 38. Free here means free of the base duty only: origin-specific Chapter 99 duties such as Section 301 can still be owed.
Goods from countries without normal trade relations pay the column 2 rate of 20% instead of nothing, so origin decides between free entry and a 20% duty.
Statistical suffixes
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 3824.10.00 | Prepared binders for foundry molds or cores | 6% |
| 3824.30.00 | Nonagglomerated metal carbides mixed together or with metallic binders | 3.6% |
| 3824.40.10 | Containing 5 percent or more by weight of one or more aromatic or modified aromatic substances | 6.5% |
| 3824.40.20 | Consisting wholly of inorganic substances | Free |
| 3824.40.50 | Prepared additives for cements, mortars or concretes: other | 5% |
| 3824.60.00 | Sorbitol other than that of subheading 2905.44 | 4.9% |
| 3824.81.00 | Containing oxirane (ethylene oxide) | 5% |
| 3824.82.10 | Chlorinated but not otherwise halogenated | 6.5% |
| 3824.82.90 | Containing polychlorinated biphenyls (PCBs), polychlorinated terphenyls ({PCTs) or polybrominated biphenyls (PBBs): other | 3.7% |
| 3824.83.00 | Containing tris(2,3-dibromopropyl) phospate | 5% |
| 3824.84.00 | 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% |
| 3824.85.00 | Containing 1,2,3,4,5,6-hexachlorocyclohexane (HCH (ISO)), including lindane (ISO,INN) | 6.5% |
| 3824.86.00 | Containing pentachlorobenzene (ISO) or hexachlorobenzene (ISO) | 6.5% |
| 3824.87.00 | Containing perfluorooctane sulfonic acid, its salts, perfluorooctane sulfonamides, or perfluorooctane sulfonyl fluoride | 3.7% |
| 3824.88.00 | Containing tetra-, penta-, hexa-, hepta-, or octabromodiphenyl ethers | 6.5% |
| 3824.89.00 | Containing short-chain chlorinated paraffins | 6.5% |
| 3824.91.00 | 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% |
| 3824.92.00 | Polyglycol esters of methylphosphonic acid. | 5% |
| 3824.99.11 | In the form of ingots | Free |
| 3824.99.19 | Cultured crystals (other than optical elements of chapter 90), weighing not less than 2.5 g each: other | 6.5% |
| 3824.99.21 | Consisting wholly of substances found naturally in coal tar, whether obtained from coal tar or other source | Free |
| 3824.99.25 | Aqueous mixtures of triphenyl sulfonium chloride, diphenyl (4-phenylthio)phenyl sulfonium chloride and (thiodi-4,1- phenylene)bis(diphenyl sulfonium) dichloride | 6.5% |
| 3824.99.26 | 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 |
| 3824.99.29 | Mixtures containing 5 percent or more by weight of one or more aromatic or modified aromatic substances: other | 6.5% |
| 3824.99.31 | Mixtures of two or more inorganic compounds: of bismuth | 6.5% |
| 3824.99.32 | Of hydrosulfite compounds, of sulfoxylate compounds, or of both | 6.5% |
| 3824.99.33 | Mixtures of two or more inorganic compounds: of mercury | 4.2% |
| 3824.99.34 | Mixtures of two or more inorganic compounds: of molybdenum | 2.8% |
| 3824.99.35 | Mixtures of two or more inorganic compounds: of tungsten | 6.5% |
| 3824.99.36 | Mixtures of two or more inorganic compounds: of vanadium | 6.5% |
| 3824.99.39 | Mixtures of two or more inorganic compounds: other | Free |
| 3824.99.41 | Fatty substances of animal or vegetable origin and mixtures thereof | 4.6% |
| 3824.99.49 | 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% |
| 3824.99.50 | Chlorinated but not otherwise halogenated | 6.5% |
| 3824.99.55 | Mixtures of halogenated hydrocarbons: other | 3.7% |
| 3824.99.70 | 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 |
| 3824.99.75 | Naphthenic acids, their water-insoluble salts and their esters | 3.7% |
| 3824.99.93 | Other: other | 5% |