{
  "summary": "HS chapter 31 covers fertilisers. It has 5 headings, 31.01 to 31.05, and 24 six-digit subheadings in HS2022. National tariff lines under chapter 31 are live on border.bot for the United States (29 lines, also used by 1 other country).",
  "updatedAt": "2026-10-11",
  "facts": [
    {
      "label": "Chapter",
      "value": "31",
      "source": "border.bot release GLOBAL:hs #2"
    },
    {
      "label": "Description",
      "value": "Fertilisers",
      "source": "border.bot release GLOBAL:hs #2"
    },
    {
      "label": "Headings",
      "value": "5",
      "source": "border.bot release GLOBAL:hs #2"
    },
    {
      "label": "Subheadings",
      "value": "24",
      "source": "border.bot release GLOBAL:hs #2"
    },
    {
      "label": "Edition",
      "value": "HS2022",
      "source": "border.bot release GLOBAL:hs #2"
    }
  ],
  "faq": [
    {
      "question": "What does HS chapter 31 cover?",
      "answer": "HS chapter 31 covers fertilisers."
    },
    {
      "question": "How many headings and subheadings are in HS chapter 31?",
      "answer": "HS chapter 31 has 5 headings and 24 six-digit subheadings in HS2022."
    },
    {
      "question": "Which countries’ tariffs list national lines in HS chapter 31?",
      "answer": "National tariff lines under chapter 31 are live on border.bot for the United States (29 lines, also used by 1 other country)."
    }
  ],
  "sections": [
    {
      "id": "covers",
      "title": "What this chapter covers",
      "text": [
        "HS chapter 31 covers fertilisers.",
        "It has 5 headings, 31.01 to 31.05, and 24 six-digit subheadings in HS2022."
      ]
    },
    {
      "id": "not-covered",
      "title": "What it doesn’t cover",
      "text": [
        "Chapter 30, before it, covers pharmaceutical products; chapter 32, after it, covers tanning or dyeing extracts; tannins and their derivatives; dyes, pigments and other colouring matter; paints and varnishes; putty and other mastics; inks."
      ]
    },
    {
      "id": "structure",
      "title": "How it is structured",
      "text": [
        "Chapter 31 is the first level of the Harmonized System. Its headings add two digits to the chapter number (31.01), and each heading's subheadings add two more."
      ]
    },
    {
      "id": "other-countries",
      "title": "In other countries",
      "text": [
        "National tariff lines under chapter 31 are live on border.bot for the United States (29 lines, also used by 1 other country)."
      ]
    },
    {
      "id": "sources",
      "title": "Sources and updates",
      "text": [
        "The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026.",
        "This page was last updated on 11 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-chapter",
    "edition": "HS2022",
    "chapter": {
      "code": "31",
      "description": "Fertilisers"
    },
    "headings": [
      {
        "code": "3101",
        "description": "Animal or vegetable fertilisers, whether or not mixed together or chemically treated; fertilisers produced by the mixing or chemical treatment of animal or vegetable products",
        "subheadings": [
          {
            "code": "310100",
            "description": "Animal or vegetable fertilisers, whether or not mixed together or chemically treated; fertilisers produced by the mixing or chemical treatment of animal or vegetable products"
          }
        ]
      },
      {
        "code": "3102",
        "description": "Mineral or chemical fertilisers, nitrogenous",
        "subheadings": [
          {
            "code": "310210",
            "description": "Urea, whether or not in aqueous solution"
          },
          {
            "code": "310221",
            "description": "Ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate: Ammonium sulphate"
          },
          {
            "code": "310229",
            "description": "Ammonium sulphate; double salts and mixtures of ammonium sulphate and ammonium nitrate: Other"
          },
          {
            "code": "310230",
            "description": "Ammonium nitrate, whether or not in aqueous solution"
          },
          {
            "code": "310240",
            "description": "Mixtures of ammonium nitrate with calcium carbonate or other inorganic non-fertilising substances"
          },
          {
            "code": "310250",
            "description": "Sodium nitrate"
          },
          {
            "code": "310260",
            "description": "Double salts and mixtures of calcium nitrate and ammonium nitrate"
          },
          {
            "code": "310280",
            "description": "Mixtures of urea and ammonium nitrate in aqueous or ammoniacal solution"
          },
          {
            "code": "310290",
            "description": "Other, including mixtures not specified in the foregoing subheadings"
          }
        ]
      },
      {
        "code": "3103",
        "description": "Mineral or chemical fertilisers, phosphatic",
        "subheadings": [
          {
            "code": "310311",
            "description": "Superphosphates: Containing by weight 35 % or more of diphosphorus pentaoxide (P2O5)"
          },
          {
            "code": "310319",
            "description": "Superphosphates: Other"
          },
          {
            "code": "310390",
            "description": "Other"
          }
        ]
      },
      {
        "code": "3104",
        "description": "Mineral or chemical fertilisers, potassic",
        "subheadings": [
          {
            "code": "310420",
            "description": "Potassium chloride"
          },
          {
            "code": "310430",
            "description": "Potassium sulphate"
          },
          {
            "code": "310490",
            "description": "Other"
          }
        ]
      },
      {
        "code": "3105",
        "description": "Mineral or chemical fertilisers containing two or three of the fertilising elements nitrogen, phosphorus and potassium; other fertilisers; goods of this Chapter in tablets or similar forms or in packages of a gross weight not exceeding 10kg",
        "subheadings": [
          {
            "code": "310510",
            "description": "Goods of this Chapter in tablets or similar forms or in packages of a gross weight not exceeding 10kg"
          },
          {
            "code": "310520",
            "description": "Mineral or chemical fertilisers containing the three fertilising elements nitrogen, phosphorus and potassium"
          },
          {
            "code": "310530",
            "description": "Diammonium hydrogenorthophosphate (diammonium phosphate)"
          },
          {
            "code": "310540",
            "description": "Ammonium dihydrogenorthophosphate (monoammonium phosphate) and mixtures thereof with diammonium hydrogenorthophosphate (diammonium phosphate)"
          },
          {
            "code": "310551",
            "description": "Other mineral or chemical fertilisers containing the two fertilising elements nitrogen and phosphorus: Containing nitrates and phosphates"
          },
          {
            "code": "310559",
            "description": "Other mineral or chemical fertilisers containing the two fertilising elements nitrogen and phosphorus: Other"
          },
          {
            "code": "310560",
            "description": "Mineral or chemical fertilisers containing the two fertilising elements phosphorus and potassium"
          },
          {
            "code": "310590",
            "description": "Other"
          }
        ]
      }
    ],
    "previous": {
      "code": "30",
      "description": "Pharmaceutical products",
      "indexable": true
    },
    "next": {
      "code": "32",
      "description": "Tanning or dyeing extracts; tannins and their derivatives; dyes, pigments and other colouring matter; paints and varnishes; putty and other mastics; inks",
      "indexable": true
    },
    "schedules": [
      {
        "code": "US",
        "name": "United States",
        "slug": "united-states",
        "lines": 29,
        "members": 1
      }
    ],
    "provenance": [
      {
        "dataset": "GLOBAL:hs",
        "country": "GLOBAL",
        "kind": "hs",
        "seq": 2,
        "version": "mytraddal hs2022.csv (HS 2022)",
        "liveAt": "2026-10-11T06:04:17.693Z",
        "origin": "upload",
        "sourceUrls": []
      }
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    "size": 100,
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  "code": "31",
  "attribution": "border.bot tariff reference (border.bot), compiled from the official publishers named on each page.",
  "terms": "https://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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}