{
  "summary": "HS code 2836.91 covers lithium carbonates, other than those classified in 2836.92 and 2836.99. It sits in heading 28.36 (carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate) in chapter 28 (inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes). Other goods of heading 28.36 are classified under 2836.20 (disodium carbonate), 2836.30 (sodium hydrogencarbonate (sodium bicarbonate)), 2836.40 (potassium carbonates), 2836.50 (calcium carbonate) or 3 others. National tariff lines under 2836.91 are live on border.bot for the United States (2 lines, also used by 1 other country).",
  "updatedAt": "2026-10-11",
  "facts": [
    {
      "label": "HS code",
      "value": "2836.91",
      "source": "border.bot release GLOBAL:hs #2"
    },
    {
      "label": "Covers",
      "value": "Lithium carbonates",
      "source": "border.bot release GLOBAL:hs #2"
    },
    {
      "label": "Heading",
      "value": "28.36: Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate",
      "source": "border.bot release GLOBAL:hs #2",
      "url": "https://border.bot/hs-codes/2836"
    },
    {
      "label": "Chapter",
      "value": "28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes",
      "source": "border.bot release GLOBAL:hs #2",
      "url": "https://border.bot/hs-codes/28"
    },
    {
      "label": "Edition",
      "value": "HS2022",
      "source": "border.bot release GLOBAL:hs #2"
    },
    {
      "label": "Duty in the United States",
      "value": "See its 2 lines",
      "source": null,
      "url": "https://border.bot/countries/united-states/hs-codes/283691"
    }
  ],
  "faq": [
    {
      "question": "What does HS code 2836.91 cover?",
      "answer": "HS code 2836.91 covers lithium carbonates, other than those classified in 2836.92 and 2836.99."
    },
    {
      "question": "Which heading and chapter is HS code 2836.91 in?",
      "answer": "HS code 2836.91 is in heading 28.36 (carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate) in chapter 28 (inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes)."
    },
    {
      "question": "Where are goods of heading 28.36 classified when 2836.91 doesn’t fit?",
      "answer": "Other goods of heading 28.36 are classified under 2836.20 (disodium carbonate), 2836.30 (sodium hydrogencarbonate (sodium bicarbonate)), 2836.40 (potassium carbonates), 2836.50 (calcium carbonate) or 3 others."
    },
    {
      "question": "Which countries’ tariffs list national lines under HS code 2836.91?",
      "answer": "National tariff lines under 2836.91 are live on border.bot for the United States (2 lines, also used by 1 other country)."
    }
  ],
  "sections": [
    {
      "id": "covers",
      "title": "What this code covers",
      "text": [
        "HS code 2836.91 covers lithium carbonates, other than those classified in 2836.92 and 2836.99.",
        "The legal text of the subheading is “Other: Lithium carbonates”, read under “Other”, in HS2022."
      ]
    },
    {
      "id": "not-covered",
      "title": "What it doesn’t cover",
      "text": [
        "Other goods of heading 28.36 are classified under 2836.20 (disodium carbonate), 2836.30 (sodium hydrogencarbonate (sodium bicarbonate)), 2836.40 (potassium carbonates), 2836.50 (calcium carbonate) or 3 others."
      ]
    },
    {
      "id": "structure",
      "title": "How it is structured",
      "text": [
        "2836.91 is a six-digit subheading. Its first two digits, 28, are the chapter; the first four, 2836, are heading 28.36; the last two, 91, 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": [
        "National tariff lines under 2836.91 are live on border.bot for the United States (2 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-subheading",
    "edition": "HS2022",
    "chapter": {
      "code": "28",
      "description": "Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes"
    },
    "heading": {
      "code": "2836",
      "description": "Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate"
    },
    "subheading": {
      "code": "283691",
      "description": "Other: Lithium carbonates",
      "levels": [
        "Other",
        "Lithium carbonates"
      ],
      "english": null,
      "keywords": []
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    "siblings": [
      {
        "code": "283620",
        "description": "Disodium carbonate"
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      {
        "code": "283630",
        "description": "Sodium hydrogencarbonate (sodium bicarbonate)"
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      {
        "code": "283640",
        "description": "Potassium carbonates"
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      {
        "code": "283650",
        "description": "Calcium carbonate"
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      {
        "code": "283660",
        "description": "Barium carbonate"
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      {
        "code": "283692",
        "description": "Other: Strontium carbonate"
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        "code": "283699",
        "description": "Other: Other"
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        "name": "United States",
        "slug": "united-states",
        "lines": 2,
        "members": 1
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    "provenance": [
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        "dataset": "GLOBAL:hs",
        "country": "GLOBAL",
        "kind": "hs",
        "seq": 2,
        "version": "mytraddal hs2022.csv (HS 2022)",
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  "code": "283691",
  "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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