{
  "summary": "HS code 2935.90 covers sulphonamides, other than those classified in 2935.10, 2935.20, 2935.30, 2935.40 and 2935.50. It sits in heading 29.35 (sulphonamides) in chapter 29 (organic chemicals). Other goods of heading 29.35 are classified under 2935.10 (N-Methylperfluorooctane sulphonamide), 2935.20 (N-Ethylperfluorooctane sulphonamide), 2935.30 (N-Ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide), 2935.40 (N-(2-Hydroxyethyl)-N-methylperfluorooctane sulphonamide) or 1 other. National tariff lines under 2935.90 are live on border.bot for the United States (14 lines, also used by 1 other country).",
  "updatedAt": "2026-10-11",
  "facts": [
    {
      "label": "HS code",
      "value": "2935.90",
      "source": "border.bot release GLOBAL:hs #2"
    },
    {
      "label": "Covers",
      "value": "Sulphonamides",
      "source": "border.bot release GLOBAL:hs #2"
    },
    {
      "label": "Heading",
      "value": "29.35: Sulphonamides",
      "source": "border.bot release GLOBAL:hs #2",
      "url": "https://border.bot/hs-codes/2935"
    },
    {
      "label": "Chapter",
      "value": "29: Organic chemicals",
      "source": "border.bot release GLOBAL:hs #2",
      "url": "https://border.bot/hs-codes/29"
    },
    {
      "label": "Edition",
      "value": "HS2022",
      "source": "border.bot release GLOBAL:hs #2"
    },
    {
      "label": "Duty in the United States",
      "value": "See its 14 lines",
      "source": null,
      "url": "https://border.bot/countries/united-states/hs-codes/293590"
    }
  ],
  "faq": [
    {
      "question": "What does HS code 2935.90 cover?",
      "answer": "HS code 2935.90 covers sulphonamides, other than those classified in 2935.10, 2935.20, 2935.30, 2935.40 and 2935.50."
    },
    {
      "question": "Which heading and chapter is HS code 2935.90 in?",
      "answer": "HS code 2935.90 is in heading 29.35 (sulphonamides) in chapter 29 (organic chemicals)."
    },
    {
      "question": "Where are goods of heading 29.35 classified when 2935.90 doesn’t fit?",
      "answer": "Other goods of heading 29.35 are classified under 2935.10 (N-Methylperfluorooctane sulphonamide), 2935.20 (N-Ethylperfluorooctane sulphonamide), 2935.30 (N-Ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide), 2935.40 (N-(2-Hydroxyethyl)-N-methylperfluorooctane sulphonamide) or 1 other."
    },
    {
      "question": "Which countries’ tariffs list national lines under HS code 2935.90?",
      "answer": "National tariff lines under 2935.90 are live on border.bot for the United States (14 lines, also used by 1 other country)."
    }
  ],
  "sections": [
    {
      "id": "covers",
      "title": "What this code covers",
      "text": [
        "HS code 2935.90 covers sulphonamides, other than those classified in 2935.10, 2935.20, 2935.30, 2935.40 and 2935.50.",
        "The legal text of the subheading is “Other”, in HS2022."
      ]
    },
    {
      "id": "not-covered",
      "title": "What it doesn’t cover",
      "text": [
        "Other goods of heading 29.35 are classified under 2935.10 (N-Methylperfluorooctane sulphonamide), 2935.20 (N-Ethylperfluorooctane sulphonamide), 2935.30 (N-Ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide), 2935.40 (N-(2-Hydroxyethyl)-N-methylperfluorooctane sulphonamide) or 1 other."
      ]
    },
    {
      "id": "structure",
      "title": "How it is structured",
      "text": [
        "2935.90 is a six-digit subheading. Its first two digits, 29, are the chapter; the first four, 2935, are heading 29.35; the last two, 90, 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 2935.90 are live on border.bot for the United States (14 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": "29",
      "description": "Organic chemicals"
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    "heading": {
      "code": "2935",
      "description": "Sulphonamides"
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    "subheading": {
      "code": "293590",
      "description": "Other",
      "levels": [
        "Other"
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      "english": null,
      "keywords": []
    },
    "siblings": [
      {
        "code": "293510",
        "description": "N-Methylperfluorooctane sulphonamide"
      },
      {
        "code": "293520",
        "description": "N-Ethylperfluorooctane sulphonamide"
      },
      {
        "code": "293530",
        "description": "N-Ethyl-N-(2-hydroxyethyl) perfluorooctane sulphonamide"
      },
      {
        "code": "293540",
        "description": "N-(2-Hydroxyethyl)-N-methylperfluorooctane sulphonamide"
      },
      {
        "code": "293550",
        "description": "Other perfluorooctane sulphonamides"
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      "code": "293550",
      "description": "Other perfluorooctane sulphonamides",
      "indexable": true
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      "description": "Vitamins and their derivatives, unmixed: Vitamins A and their derivatives",
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        "code": "US",
        "name": "United States",
        "slug": "united-states",
        "lines": 14,
        "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)",
        "liveAt": "2026-10-11T06:04:17.693Z",
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  "code": "293590",
  "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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