{
  "summary": "The United States tariff splits HS 3812.39 (anti-oxidising preparations and other compound stabilisers for rubber or plastics: Other) into 5 national lines: 3812.39.20.00 (mixtures of N,N'-diaryl-p-phenylenediamines), 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-dimeth…), 3812.39.60.00 (other), 3812.39.70.00 (bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate) and 1 other. The general (MFN) duty differs by line: 6.5% on 3812.39.20.00, free on 3812.39.30.00, 6.5% on 3812.39.60.00, free on 3812.39.70.00 and 5% on 3812.39.90.00.",
  "updatedAt": "2026-10-09",
  "facts": [
    {
      "label": "HS subheading",
      "value": "3812.39",
      "source": null,
      "url": "https://border.bot/hs-codes/381239"
    },
    {
      "label": "National lines",
      "value": "5",
      "source": null
    },
    {
      "label": "Tariff",
      "value": "United States",
      "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false",
      "url": "https://border.bot/countries/united-states"
    },
    {
      "label": "Chapter",
      "value": "38: Miscellaneous chemical products",
      "source": null
    }
  ],
  "faq": [
    {
      "question": "How many national tariff lines does the United States tariff have under HS 3812.39?",
      "answer": "The United States tariff splits HS 3812.39 (anti-oxidising preparations and other compound stabilisers for rubber or plastics: Other) into 5 national lines: 3812.39.20.00 (mixtures of N,N'-diaryl-p-phenylenediamines), 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-dimeth…), 3812.39.60.00 (other), 3812.39.70.00 (bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate) and 1 other."
    },
    {
      "question": "What is the duty on HS 3812.39 in the United States?",
      "answer": "The general (MFN) duty differs by line: 6.5% on 3812.39.20.00, free on 3812.39.30.00, 6.5% on 3812.39.60.00, free on 3812.39.70.00 and 5% on 3812.39.90.00."
    }
  ],
  "sections": [
    {
      "id": "covers",
      "title": "United States lines under 3812.39",
      "text": [
        "The United States tariff splits HS 3812.39 (anti-oxidising preparations and other compound stabilisers for rubber or plastics: Other) into 5 national lines: 3812.39.20.00 (mixtures of N,N'-diaryl-p-phenylenediamines), 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-dimeth…), 3812.39.60.00 (other), 3812.39.70.00 (bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate) and 1 other.",
        "The general (MFN) duty differs by line: 6.5% on 3812.39.20.00, free on 3812.39.30.00, 6.5% on 3812.39.60.00, free on 3812.39.70.00 and 5% on 3812.39.90.00."
      ]
    },
    {
      "id": "other-countries",
      "title": "In other countries",
      "text": [
        "No other national tariff on border.bot has live lines under 3812.39 yet."
      ]
    },
    {
      "id": "sources",
      "title": "Sources and updates",
      "text": [
        "The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.",
        "The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.",
        "The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.",
        "This page was last updated on 9 October 2026.",
        "Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling."
      ]
    }
  ],
  "data": {
    "type": "country-subheading",
    "country": {
      "code": "US",
      "name": "United States",
      "slug": "united-states"
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      "name": "United States",
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    "dateModified": "2026-10-09T21:15:58.040Z",
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      "code": "38",
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    "heading": {
      "code": "3812",
      "description": "Prepared rubber accelerators; compound plasticizers for rubber or plastics, not elsewhere specified or included; antioxidizing preparations and other compound stabilizers for rubber or plastics"
    },
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              {
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                "label": "United States-Colombia Trade Promotion Agreement Implementation Act"
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                "code": "D",
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              {
                "code": "KR",
                "label": "United States-Korea Free Trade Agreement Implementation Act"
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                "code": "MA",
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              {
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              {
                "code": "P",
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              {
                "code": "SG",
                "label": "United States-Singapore Free Trade Agreement"
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        "code": "3812393000",
        "description": "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)",
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          "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-dimeth…"
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        "keywords": [
          "Zinc 4-methyl-1H-benzimidazole-2-thiolate (CAS No. 61617-00-3)",
          "2,4-Dimethyl-6-(1-methylpentadecyl)phenol (CAS No. 134701-20-5)",
          "4-Methylphenol - tricyclo[5.2.2.02,6]undecane (1:1) (CAS No. 68610-51-5)"
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