{
  "summary": "HS code 3102.21 covers ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate, ammonium sulphate. It sits in heading 31.02 (mineral or chemical fertilisers, nitrogenous) in chapter 31 (fertilisers). Other goods of heading 31.02 are classified under 3102.10 (urea, whether or not in aqueous solution), 3102.29 (ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate, other), 3102.30 (ammonium nitrate, whether or not in aqueous solution), 3102.40 (mixtures of ammonium nitrate with calcium carbonate or other inorganic non-fertilising substances) or 4 others.",
  "updatedAt": "2026-10-13",
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      "label": "HS code",
      "value": "3102.21",
      "source": "border.bot release GLOBAL:hs #1"
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    {
      "label": "Covers",
      "value": "Ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate, ammonium sulphate",
      "source": "border.bot release GLOBAL:hs #1"
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    {
      "label": "Heading",
      "value": "31.02: Mineral or chemical fertilisers, nitrogenous",
      "source": "border.bot release GLOBAL:hs #1",
      "url": "https://staging.border.bot/hs-codes/3102"
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    {
      "label": "Chapter",
      "value": "31: Fertilisers",
      "source": "border.bot release GLOBAL:hs #1",
      "url": "https://staging.border.bot/hs-codes/31"
    },
    {
      "label": "Edition",
      "value": "HS2022",
      "source": "border.bot release GLOBAL:hs #1"
    },
    {
      "label": "Duty rates",
      "value": "Set by each country’s tariff",
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  ],
  "faq": [
    {
      "question": "What does HS code 3102.21 cover?",
      "answer": "HS code 3102.21 covers ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate, ammonium sulphate."
    },
    {
      "question": "Which heading and chapter is HS code 3102.21 in?",
      "answer": "HS code 3102.21 is in heading 31.02 (mineral or chemical fertilisers, nitrogenous) in chapter 31 (fertilisers)."
    },
    {
      "question": "Where are goods of heading 31.02 classified when 3102.21 doesn’t fit?",
      "answer": "Other goods of heading 31.02 are classified under 3102.10 (urea, whether or not in aqueous solution), 3102.29 (ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate, other), 3102.30 (ammonium nitrate, whether or not in aqueous solution), 3102.40 (mixtures of ammonium nitrate with calcium carbonate or other inorganic non-fertilising substances) or 4 others."
    }
  ],
  "sections": [
    {
      "id": "covers",
      "title": "What this code covers",
      "text": [
        "HS code 3102.21 covers ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate, ammonium sulphate.",
        "The legal text of the subheading is “Ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate: Ammonium sulphate”, read under “Ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate”, in HS2022."
      ]
    },
    {
      "id": "not-covered",
      "title": "What it doesn’t cover",
      "text": [
        "Other goods of heading 31.02 are classified under 3102.10 (urea, whether or not in aqueous solution), 3102.29 (ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate, other), 3102.30 (ammonium nitrate, whether or not in aqueous solution), 3102.40 (mixtures of ammonium nitrate with calcium carbonate or other inorganic non-fertilising substances) or 4 others."
      ]
    },
    {
      "id": "structure",
      "title": "How it is structured",
      "text": [
        "3102.21 is a six-digit subheading. Its first two digits, 31, are the chapter; the first four, 3102, are heading 31.02; the last two, 21, identify the subheading within the heading.",
        "Countries add their own digits after these six for their national tariff lines."
      ]
    },
    {
      "id": "other-countries",
      "title": "In other countries",
      "text": [
        "No national tariff lines under 3102.21 are live on border.bot yet. Tariffs built on the Harmonized System (HS2022) use 3102.21 at six digits and add their own digits after it."
      ]
    },
    {
      "id": "sources",
      "title": "Sources and updates",
      "text": [
        "The Harmonized System legal text comes from border.bot release 1 (edition HS 2022), imported from a file, and has been live since 13 October 2026.",
        "This page was last updated on 13 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": "hs-subheading",
    "edition": "HS2022",
    "chapter": {
      "code": "31",
      "description": "Fertilisers"
    },
    "heading": {
      "code": "3102",
      "description": "Mineral or chemical fertilisers, nitrogenous"
    },
    "subheading": {
      "code": "310221",
      "description": "Ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate: Ammonium sulphate",
      "levels": [
        "Ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate",
        "Ammonium sulphate"
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      "keywords": []
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        "code": "310210",
        "description": "Urea, whether or not in aqueous solution"
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      {
        "code": "310229",
        "description": "Ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate: Other"
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        "code": "310230",
        "description": "Ammonium nitrate, whether or not in aqueous solution"
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      {
        "code": "310240",
        "description": "Mixtures of ammonium nitrate with calcium carbonate or other inorganic non-fertilising substances"
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      {
        "code": "310250",
        "description": "Sodium nitrate"
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      {
        "code": "310260",
        "description": "Double salts and mixtures of calcium nitrate and ammonium nitrate"
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      {
        "code": "310280",
        "description": "Mixtures of urea and ammonium nitrate in aqueous or ammoniacal solution"
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      {
        "code": "310290",
        "description": "Other, including mixtures not specified in the foregoing subheadings"
      }
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    "schedules": [],
    "provenance": [
      {
        "dataset": "GLOBAL:hs",
        "country": "GLOBAL",
        "kind": "hs",
        "seq": 1,
        "version": "mytraddal hs2022.csv (HS 2022)",
        "liveAt": "2026-10-13T08:43:06.218Z",
        "origin": "upload",
        "sourceUrls": []
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  "code": "310221",
  "attribution": "border.bot tariff reference (border.bot), compiled from the official publishers named on each page.",
  "terms": "https://staging.border.bot/legal/terms",
  "notice": "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.",
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